Received 1-October-2003

IODP Proposal Cover Sheet
New

RevisedAddendum

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Title:
Proponent(s):Keywords:(5 or less)Contact Person:
Department:
Organization:
AddressTel.:
E-mail:603-CDP3
Above For Official Use Only

NanTroSEIZE: The Nankai Trough Seismogenic Zone ExperimentComplex Drilling Project
Gaku Kimura, Harold Tobin, and the NanTroSEIZE Working Group(24 Co-Proponents)
Seismogenic zone, earthquakes, tsunamigenesis,
fault mechanics

Area:

Southwest
Japan margin

Contact Information:
Harold Tobin
Earth and Environmental Science Department
New Mexico Tech
Socorro, NM 87801, USA
Fax: +1-505-835-6436+1-505-835-5920
tobin@nmt.edu
Permission to post abstract on iSAS Web site:

Yes

No

Abstract: (400 words or less)This Complex Drilling Project (CDP) proposal describes the rationale and scientific objectives for an
integrated program of geophysical and geologic studies, non-riser drilling, and riser drilling designed toinvestigate the aseismic to seismic transition of the megathrust system and the processes of earthquake
and tsunami generation at the Nankai Trough subduction zone. Our fundamental goal is the creationof a distributed observatory spanning the up-dip limit of seismogenic and tsunamigenic behavior.
This will involve sampling and instrumenting key elements of the active plate boundary fault system atseveral locations off the Kii Peninsula, where the plate interface and active mega-splay faults –implicated in tsunamigenesis – are accessible to drilling within the region of coseismic rupture in the1944 Tonankai M8 great earthquake. The most ambitious objective is to access and instrument the
Nankai plate interface within the seismogenic zone to advance our knowledge of fundamental aseismicand seismic faulting processes and controls on the transition between them. The strategy of
NanTroSEIZE differs fundamentally from that of other proposed deep fault drilling programs because
we will document the evolution of fault zone properties by trading time for space along the dipping plateboundary.
We propose 3 distinct phased IODP drilling efforts: Phase 1 – Inputs to the seismogenic zone system,
investigating variations in the sediments, oceanic crust, and fluids input to the plate boundary system;
Phase 2 – Mega-splay (OOST) fault drilling to sample and instrument thrusts which splay from the basal
décollement up through the forearc, in order to characterize fault properties transecting the aseismic toseismic transition from 1 to 3.5 km depth shallow; and Phase 3 – Sampling and instrumenting the plateinterface (décollement) at ~ 6 km below seafloor, in a region predicted to be within both the zone
capable of generating seismogenic behavior and in the zone of co-seismic slip in the 1944 greatearthquake. Long-term monitoring of a wide range of phenomena will be a major part of the effort, todetect signals of fault zone processes in the near-field. In addition, ongoing seismological and geodeticarrays in the vicinity as well as in the deep boreholes, geologic studies, laboratory and modeling efforts
are all integral components of the NanTroSEIZE project, essential to success in achieving project
objectives.

603-CDP3
Scientific Objectives: (250 words or less)
The principal scientific objective of the proposed drilling is to acquire data bearing on and testing the following
key hypotheses:

1. Systematic, progressive material and state changes control the onset of seismogenic behavior on
subduction thrusts.
2. Subduction zone megathrusts are weak faults.
3. Within the seismogenic zone, relative plate motion is primarily accommodated by coseismic
frictional slip in a concentrated zone.
4. Physical properties, chemistry, and state of the fault zone change with time during the earthquake
cycle.
5. The mega-splay (OOST) thrust fault system slips in discrete events which may include
tsunamigenic slip during great earthquakes.
Proposed NanTroSEIZE efforts will test models for the frictional behavior of fault rocks across theaseismic – seismogenic transition, the composition of faults and fluids and associated pore pressure andstate of stress, partitioning of strain spatially between basal interface and splays, temporally between
coseismic and interseismic periods, and between infraseismic and aseismic events vs. seismic events.
Long-term borehole observations potentially ultimately will test whether interseismic variations or
detectable precursory phenomena exist prior to great subduction earthquakes.
Please describe below any non-standard measurements technology needed to achieve the proposed scientific objectives.
In various combinations, the following non-standard measurements are desired for sites covered by this CDP:
During Drilling and Casing Installation: Logging/measurement while drilling, drill stem & wirelinepressure/permeability tests, cross-hole hydrologic tests, offset/walkaway vertical seismic profiling, cross-holeseismic.
Long-Term Borehole Observatory Monitoring: Array temperature measurement, pressure measurement in packerisolated intervals, array measurement for short-period, three-component seismometry, bottom-hole broadband andstrong motion seismometry, bottom hole strain, multi-level tilt, and long-term fluid collection for biological andgeochemical measurements. Many of these measurements will need to be made at temperatures of ~ 80 – 150+ C.

Proposed Sites:
SEE INDIVIDUAL PROPOSALS FOR EACH PHASE FOR SITE DESCRIPTIONS

Received 11 May 2007

IODP Proposal Cover Sheet
New

Revised

603-Add2

Addendum

Above For Official Use Only

Please fill out information in all gray boxes
Title:

603-Add2, NanTroSEIZE Proposal 603 Addendum. Mechanical and Hydrologic Stateof Mega-Splay Faults: Implications for Seismogenic Faulting and Tsunami Generation

Proponent(s):Lisa McNeill (Southampton), Greg Moore (IFREE-JAMSTEC), Harold Tobin (U.
Wisconsin), Masataka Kinoshita (IFREE-JAMSTEC), Casey Moore (UC Santa Cruz), Mike
Underwood U. (Missouri), Gaku Kimura (Tokyo Univ.)

Keywords:(5 or less)

Seismogenic zone, earthquakes, tsunamigenesis, megasplay
fault activity, fault mechanics

Area:

Nankai Trough,Japan

Contact Information:
Contact Person:
Department:
Organization:
AddressTel.:
E-mail:Lisa McNeill
National Oceanography Centre, Southampton
University of Southampton
European Way, Southampton, UK
44-23-8059 3640
Fax:
lcmn@noc.soton.ac.uk

Permission to post abstract on IODP-MI Web site:

44-23-8059 3059

Yes

No

Abstract: (400 words or less)
We are requesting to add two additional sites to our list of contingency sites for NanTroSEIZE drilling
during Stage 1. These two sites could be cored with APC/XCB (or HPCS/ESCS) during any of the 3scheduled expeditions on either Chikyu or JR. The cores are designed to provide detailed age control on
slope sediment that overlies the tips of the mega-splay fault system offshore Kii Peninsula. The new 3D
seismic data volume images these sediments in greater detail than was previously available and we are able
to choose key sites to date the most recent movement along the splay faults. The near-surface displacement
history of these faults is key to understanding the timing and development of the splay system.

1

603-Add2
Scientific Objectives: (250 words or less)
The objective of these two additional holes is to date the movement along the mega-splay system in the
NanTroSEIZE drilling area.

Please describe below any non-standard measurements technology needed to achieve the proposed scientificobjectives.
None

Proposed Sites:
Site Name

NT2-05 A

NT2-10 A

Position

Water
Depth
(m)

Penetration (m)
Sed

Bsm

Total

33°12.433’N

2827

255

0

255

Core and date younger slope
basin sediments to constrain
splay fault activity

2702

325

0

325

Core and date older slope
basin sediments (underlying
prominent unconformity) toconstrain splay fault activity

136°43.867’E
33°12.830’N
136°43.600’E

Brief Site-specific Objectives

2

Received 1-April-2003

iSAS/IODP Proposal Cover Sheet
New

Revised603A-Full2

Addendum

Above For Official Use Only

Please fill out information in all gray boxes
Title:
Proponent(s):Keywords:(5 or less)Contact Person:
Department:
Organization:
AddressTel.:
E-mail:NanTroSEIZE Reference Sites:
Sampling and Measuring Inputs to the Seismogenic Zone
Michael Underwood, Juichiro Ashi, Wonn Soh, Julia Morgan, Saneatsu Saito,
Demian Saffer, Elizabeth Screaton, Masataka Kinoshita, Gregory Moore,
Miriam Kastner, Susan Bilek, Kohtaro Ujiie
Subduction inputs; physical and chemical hydrology;
lithostratigraphy; structural geology; heat flow and diagenesis

Area:

Nankai Trough,Shikoku Basin

Contact Information:
Michael Underwood
Department of Geological Sciences
University of Missouri
101 Geology Building
573-882-4685
Fax: 573-882-5458
UnderwoodM@missouri.edu
Permission to post abstract on iSAS Web site:

X

Yes

No

Abstract: (400 words or less)A foremost goal of IODP is to drill into the seismogenic zone of a plate-boundary fault. The CDP
proposal for NanTroSEIZE (Nankai Trough Seismogenic Zone Experiment) identifies several phases ormilestones in pursuit of that goal. Phase 1, the shallow reference sites, will test five fundamental
hypotheses: (1) Systematic and progressive changes in material properties and state control the onset ofseismogenic behavior and locking of subduction thrusts. (2) Subduction zone megathrusts are weak faults;
that is, they slip under conditions of low resolved shear stress. (3) Within the seismogenic zone, relative
plate motion is accommodated primarily by coseismic frictional slip in a concentrated zone. (4) Out-ofsequence (or splay) faults develop where the plate-boundary fault is strong relative to adjacent zones
without splay faults. (5) The plate-boundary fault, near its up-dip limit of seismicity, follows the interface
between underthrust metasedimentary rocks and igneous basement.
Reference sites serve three vital roles in testing these hypotheses. First, they establish, prior to
subduction, how lithology, deformation features, hydrologic properties (porosity, permeability), variablesof state (stress, pore pressure, temperature) and in situ properties (mineral and fluid composition,
alteration, grain fabric, strain rate, microseismicity) change from a basement high (potential asperity) to abasement plain. Second, after showing how basement topography affects stratigraphy and hydrology (and,therefore, mechanical properties), we will separate those inherited variables from changes superimposedby diagenesis, deformation, and fluid flow along the P-T path of subduction. Third, to track fault-zone
evolution toward stick-slip behavior, we need to begin characterizing the plate-boundary fault where it isshallow and aseismic, then move down dip (with deep drilling) into the seismogenic zone.
Data from previous DSDP-ODP
legs cannot be imported to theKii-Kumano region because
stratigraphic, thermal, and hydrologic inputs to Nankai Trough change so much along strike. Drilling two
reference sites within the Shikoku Basin will quantify initial conditions and show how basement relief
influences the pre-subduction geometry of sedimentary facies, temperature, permeability, sediment andbasement alteration, and fluid flow. A third reference site at the toe of the accretionary prism will show
early-phase deformation and verify how strata get partitioned above and below the frontal decollement.
The prism-toe site, moreover, will add a third dimension to constraints on facies architecture,hydrogeology, thermal structure, and reaction progress where rocks first enter the subduction zone.

603A-Full2
Scientific Objectives: (250 words or less)
The overarching goal of this proposed investigation is to show how the primary geologic differences
between subducting basement plains and basement highs (potential asperities for earthquakes) modulate
the plate boundary’s mechanical properties, relative strength, and earthquake rupture properties in the
down-dip direction. To begin this assessment, we propose two reference sites seaward of the trench. Thispairing of sites in Shikoku Basin will capture the end-member cause-and-effect of sand-rich versus sandpoor strata in the lower part of the section and show whether or not basement hydrology and alteration
history vary significantly in response to basement topography. Drilling a third site through the frontal
decollement into basement will be a challenge because total sediment thickness at the prism toe is ~1750
m. Such a site is essential, however, to verify the location of structural partitioning by the fault, as well as
to identify early products of fault-related deformation and fluid flow. The only way to document threedimensional heterogeneities in hydrologic, compositional, thermal, and mechanical inputs is to integrate
the following methods and tools at each site: (1) continuous coring, with penetration into at least 100 m of
igneous basement; (2) complete suites of LWD logs for core-log-seismic integration and mapping; (3) lab
tests of sediment composition, diagenesis, geotechnical properties, and hydrologic properties; (4) wirelinehydrologic tests of in situ permeability (packer, pump, etc.); (5) high-resolution borehole measurements oftemperature, pore pressure, and seismic velocity; and (6) chemical analysis of pore fluids, including fluids
extracted from igneous basement.

Proposed Sites: (Only High Priority Sites are listed here.)
Water
Depth
(m)

Sed

Bsm

Total

Lat: 32° 44.8878’ N
Long: 136° 55.0236’ E

3540

460 m

100 m

560 m

Comprehensive
characterization of Shikoku
Basin strata and upper igneous
crust above basement high(coring, downholemeasurements, logging)NT1-02A

Lat: 32° 47.4996’ N
Long: 137° 55.0236’ E

4210

730 m

100 m

830 m

Comprehensive
characterization of Shikoku
Basin strata and upper igneous
crust above basement plain(coring, downholemeasurements, logging)NT1-03A

Lat: 33° 1.23258’ N
Long: 136° 47.9485’ E

4125

1740 m

10 m

1750 mComprehensive
characterization of deformation,
structural partitioning bydecollement, diagenesis, andfluid flow at toe of Nankai
accretionary prism (coring,
downhole measurements,
logging)

Site Name

Position

NT1-01A

Penetration (m)Brief Site-specific Objectives

Received 1-October-2003

IODP Proposal Cover Sheet
New

RevisedAddendum

Above For Official Use Only

Please fill out information in all gray boxes
Title:

603B-Full2

NanTroSEIZE Drilling and Observatory Phase 2
Mechanical and Hydrologic State of Mega-Splay Faults:
Implications for Seismogenic Faulting and Tsunami Generation

Proponent(s): Masataka Kinoshita, Kevin Brown, Demian Saffer, Pierre Henry, Fred Chester, Tadanori Goto,
Sean P. S. Gulick, Tetsuro Hirono, Hisao Ito, Aitaro Kato, Gaku Kimura, Achim Kopf, Gregory
Moore, J. Casey Moore, Yasuyuki Nakamura, Jin-Oh Park, Saneatsu Saito, Susan Schwartz,
Masanao Shinohara, Ralph Stephen, Harold Tobin, Kohtaro Ujiie, Urumu Tsunogai, and Makoto
YamanoKeywords: Seismogenic zone, splay fault, tsunamigenesis, fault mechanics,
SouthwesternArea:(5 or less) fluid flow
Japan margin

Contact Information:
Contact Person:
Department:
Organization:
AddressTel.:
E-mail:Masataka Kinoshita
Deep-sea Research Department
Japan Marine Science and Technology Center
2-15 Natsushima, Yokosuka 237-0061 JAPAN+81-46-867-9323
masa@jamstec.go.jp

Fax: +81-46-867-9315

Permission to post abstract on iSAS Web site:

Yes

No

Abstract: (400 words or less)
The principal goal of NanTroSEIZE is to understand the mechanics of seismogenesis and rupture
propagation along subduction plate boundary faults as stated in the accompanying CDP. At Nankai, large out-ofsequence-thrust faults (“mega-splays") that branch from the décollement are common, first order structuralelements of the margin and appear continuous for several 10's of km along strike. These faults offset recent slope
basin sediments, are characterized by seafloor scarps, and are commonly associated with active fluid venting. Off
the Kii peninsula, such a mega-splay lies within the 1944 Tonankai coseismic rupture area estimated from tsunami
and seismic waveform inversions; inversions cannot distinguish splay fault slip from décollement slip.
Accordingly, both the décollement zone and the splay fault system represent necessary primary fault targets toaddress seismogenic zone processes.
The goal of this proposal is to (1) characterize the magnitude and nature of strain accumulation and slip
along mega-splays off the Kii peninsula, and (2) sample and instrument the mega-splay fault system at a range of
P-T conditions from ~1-3.5 km bsf. Specifically, this proposal is aimed at testing 5 key hypotheses: (1) The megasplay is a significant locus of plate boundary slip, slips in seismogenic events, and is currently locked; (2) The
mega-splay is part of a weak plate boundary fault system and slips at low resolved shear stress; (3) Changes inphysical and chemical properties of the fault zone with increasing temperature and pressure cause slip along themega-splay to undergo a transition from aseismic to seismic slip; (4) The mega-splay is hydrologically connectedto the seismogenic décollement zone at great depths impacting its mechanical and chemical state, and (5) Physicalproperties, chemistry, and state of the fault zone change systematically during the interseismic period.
Proposed drilling includes (1) coring of 1 site in the Kumano Basin, focused on characterizing the tectonic
history of the plate above the mega-splay faults, and (2) intersection of the active mega-splay fault system at threedepths from ~1 to ~3.5 km bsf (down dip evolutionary studies). We propose installation of long-term borehole
monitoring instruments at several of the sites. These borehole observatories, along with surface arrays ofmeasurements, regional geodetic and seismic monitoring both on land and via offshore cabled observatories, will
provide critical data toward understanding the slip distribution, temporal nature, and controlling mechanisms ofseismogenic faulting along the plate boundary system.

603B-Full2
Scientific Objectives: (250 words or less)
To test the five principal hypotheses (above), 5 holes will be drilled utilizing a dense net work of 2D and 3D
seismic reflection data. Comprehensive programs of coring, logging and downhole measurements will target the insitu mega-splay and wall-rock structural architecture, fault properties, stress state, fluid pressure, and temperature.
Post-drilling laboratory studies will include the fluid chemistry, veining/diagenesis, mechanical properties, and fault
micro-fabric relationships. NT2 sites 1 through 3 will target the mega-splay fault at depths between ~ 1 and 3.5 km.
They will assess evolutionary changes in all the various parameters over a temperature range of 20°C through~100+ °C (Hypotheses 2 and 3). In addition, at NT2-01A and B sites (1km sites), closely-spaced, paired holes willallow extensive cross hole hydrologic and geophysical studies of the shallow fault-zone. Ultimately the 3.5 km site.
NT2-3, will also be used for similar cross hole studies during the Phase 3 program. These cross hole tests, together
with the fluid chemistry and vein studies, will constrain the down dip hydrologic connectivity of the fault system(Hypothesis 4). The NT2-04 site in the Kumano Basin, together with additional geological investigations along the
splays fault traces, will allow us to constrain the mega-splays faulting activity (Hypothesis 1). At a minimum, Sites
NT2-01A and NT2-03A will be instrumented for studies of the fault locking patterns (geodetic measurements), andlong-term interactions of pore pressure, temperature, tilt and strain, seism city, fluid chemistry, and electricalproperties during this interseismic period.

Please describe below any non-standard measurements technology needed to achieve the proposed scientific objectives.
LWD (RAB), DVTP-P, hydrofracturing test (wireline packer test), VSP.
Geodetic (strain/tilt), seismic and hydrologic (P,T) sensors and osmotic sampler are installed for a long-termborehole observatory at NT2-03A. Cross-well hydrologic (pumping / fluid injection test) and electrical propertiers
experimentsare planned at NT2-01A and B.

Proposed Sites:

NT2-01A
NT2-01B

33°13.0’N, 136°41.4’E

Water
Depth
(m)
2470

NT2-02A

33°14.0’N, 136°40.8’E

2080

2000

0

2000

NT2-03A

33°15.9’N, 136°39.5’E

2240

3500

0

3500

NT2-04A

33°23.4’N, 136°34.6’E

1990

1400

300

1700

NT2-06A,B
NT2-07A
NT2-08A

33°06.6’N, 136°31.3’E
33°08.6’N, 136°30.0’E
33°10.8’N, 136°28.6’E

2990
2260
2170

1000
2000
3500

0
0
0

1000
2000
3500

Site Name

Position

Penetration (m)
Sed

Bsm

Total

1000

0

1000

Brief Site-specific Objectives
Characterization of active splay
fault and fluid flow regime bycore sampling, logging, crosshole experiments and longterm monitoring
Study the progressive change inthe fault properties byintersecting the splay fault at
intermediate depth of 2km
Study the progressive change inthe fault properties byintersecting the splay fault at
intermediate depth of 3.5km
Total history of the splay fault
through continuous coring the
Kumano basin sediments andpilot drilling for riser platform
Alternate site for NT2-01A,B
Alternate site for NT2-02A
Alternate site for NT2-03A

Received 1-October-2003

IODP Proposal Cover Sheet
New

RevisedAddendum

Above For Official Use Only

Please fill out information in all gray boxes
Title:

603B-Full2

NanTroSEIZE Drilling and Observatory Phase 2
Mechanical and Hydrologic State of Mega-Splay Faults:
Implications for Seismogenic Faulting and Tsunami Generation

Proponent(s): Masataka Kinoshita, Kevin Brown, Demian Saffer, Pierre Henry, Fred Chester, Tadanori Goto,
Sean P. S. Gulick, Tetsuro Hirono, Hisao Ito, Aitaro Kato, Gaku Kimura, Achim Kopf, Gregory
Moore, J. Casey Moore, Yasuyuki Nakamura, Jin-Oh Park, Saneatsu Saito, Susan Schwartz,
Masanao Shinohara, Ralph Stephen, Harold Tobin, Kohtaro Ujiie, Urumu Tsunogai, and Makoto
YamanoKeywords: Seismogenic zone, splay fault, tsunamigenesis, fault mechanics,
SouthwesternArea:(5 or less) fluid flow
Japan margin

Contact Information:
Contact Person:
Department:
Organization:
AddressTel.:
E-mail:Masataka Kinoshita
Deep-sea Research Department
Japan Marine Science and Technology Center
2-15 Natsushima, Yokosuka 237-0061 JAPAN+81-46-867-9323
masa@jamstec.go.jp

Fax: +81-46-867-9315

Permission to post abstract on iSAS Web site:

Yes

No

Abstract: (400 words or less)
The principal goal of NanTroSEIZE is to understand the mechanics of seismogenesis and rupture
propagation along subduction plate boundary faults as stated in the accompanying CDP. At Nankai, large out-ofsequence-thrust faults (“mega-splays") that branch from the décollement are common, first order structuralelements of the margin and appear continuous for several 10's of km along strike. These faults offset recent slope
basin sediments, are characterized by seafloor scarps, and are commonly associated with active fluid venting. Off
the Kii peninsula, such a mega-splay lies within the 1944 Tonankai coseismic rupture area estimated from tsunami
and seismic waveform inversions; inversions cannot distinguish splay fault slip from décollement slip.
Accordingly, both the décollement zone and the splay fault system represent necessary primary fault targets toaddress seismogenic zone processes.
The goal of this proposal is to (1) characterize the magnitude and nature of strain accumulation and slip
along mega-splays off the Kii peninsula, and (2) sample and instrument the mega-splay fault system at a range of
P-T conditions from ~1-3.5 km bsf. Specifically, this proposal is aimed at testing 5 key hypotheses: (1) The megasplay is a significant locus of plate boundary slip, slips in seismogenic events, and is currently locked; (2) The
mega-splay is part of a weak plate boundary fault system and slips at low resolved shear stress; (3) Changes inphysical and chemical properties of the fault zone with increasing temperature and pressure cause slip along themega-splay to undergo a transition from aseismic to seismic slip; (4) The mega-splay is hydrologically connectedto the seismogenic décollement zone at great depths impacting its mechanical and chemical state, and (5) Physicalproperties, chemistry, and state of the fault zone change systematically during the interseismic period.
Proposed drilling includes (1) coring of 1 site in the Kumano Basin, focused on characterizing the tectonic
history of the plate above the mega-splay faults, and (2) intersection of the active mega-splay fault system at threedepths from ~1 to ~3.5 km bsf (down dip evolutionary studies). We propose installation of long-term borehole
monitoring instruments at several of the sites. These borehole observatories, along with surface arrays ofmeasurements, regional geodetic and seismic monitoring both on land and via offshore cabled observatories, will
provide critical data toward understanding the slip distribution, temporal nature, and controlling mechanisms ofseismogenic faulting along the plate boundary system.

603B-Full2
Scientific Objectives: (250 words or less)
To test the five principal hypotheses (above), 5 holes will be drilled utilizing a dense net work of 2D and 3D
seismic reflection data. Comprehensive programs of coring, logging and downhole measurements will target the insitu mega-splay and wall-rock structural architecture, fault properties, stress state, fluid pressure, and temperature.
Post-drilling laboratory studies will include the fluid chemistry, veining/diagenesis, mechanical properties, and fault
micro-fabric relationships. NT2 sites 1 through 3 will target the mega-splay fault at depths between ~ 1 and 3.5 km.
They will assess evolutionary changes in all the various parameters over a temperature range of 20°C through~100+ °C (Hypotheses 2 and 3). In addition, at NT2-01A and B sites (1km sites), closely-spaced, paired holes willallow extensive cross hole hydrologic and geophysical studies of the shallow fault-zone. Ultimately the 3.5 km site.
NT2-3, will also be used for similar cross hole studies during the Phase 3 program. These cross hole tests, together
with the fluid chemistry and vein studies, will constrain the down dip hydrologic connectivity of the fault system(Hypothesis 4). The NT2-04 site in the Kumano Basin, together with additional geological investigations along the
splays fault traces, will allow us to constrain the mega-splays faulting activity (Hypothesis 1). At a minimum, Sites
NT2-01A and NT2-03A will be instrumented for studies of the fault locking patterns (geodetic measurements), andlong-term interactions of pore pressure, temperature, tilt and strain, seism city, fluid chemistry, and electricalproperties during this interseismic period.

Please describe below any non-standard measurements technology needed to achieve the proposed scientific objectives.
LWD (RAB), DVTP-P, hydrofracturing test (wireline packer test), VSP.
Geodetic (strain/tilt), seismic and hydrologic (P,T) sensors and osmotic sampler are installed for a long-termborehole observatory at NT2-03A. Cross-well hydrologic (pumping / fluid injection test) and electrical propertiers
experimentsare planned at NT2-01A and B.

Proposed Sites:

NT2-01A
NT2-01B

33°13.0’N, 136°41.4’E

Water
Depth
(m)
2470

NT2-02A

33°14.0’N, 136°40.8’E

2080

2000

0

2000

NT2-03A

33°15.9’N, 136°39.5’E

2240

3500

0

3500

NT2-04A

33°23.4’N, 136°34.6’E

1990

1400

300

1700

NT2-06A,B
NT2-07A
NT2-08A

33°06.6’N, 136°31.3’E
33°08.6’N, 136°30.0’E
33°10.8’N, 136°28.6’E

2990
2260
2170

1000
2000
3500

0
0
0

1000
2000
3500

Site Name

Position

Penetration (m)
Sed

Bsm

Total

1000

0

1000

Brief Site-specific Objectives
Characterization of active splay
fault and fluid flow regime bycore sampling, logging, crosshole experiments and longterm monitoring
Study the progressive change inthe fault properties byintersecting the splay fault at
intermediate depth of 2km
Study the progressive change inthe fault properties byintersecting the splay fault at
intermediate depth of 3.5km
Total history of the splay fault
through continuous coring the
Kumano basin sediments andpilot drilling for riser platform
Alternate site for NT2-01A,B
Alternate site for NT2-02A
Alternate site for NT2-03A

603B-Full2

iSAS/IODP Site Summary Forms:
Form 1 - General Site Information
Please fill out information in all gray boxes

New

Revised 7 M arch 2002

RevisedSection A: Proposal Information
NanTroSEIZE Drilling and Observatory Phase 2
Mechanical and Hydrologic State of Mega-Splay Faults:
Implications for Seismogenic Faulting and Tsunami Generation

Title of Proposal:

Date Form
Submitted:

Oct. 1, 2003
Characterization of active splay fault and fluid flow regime by core sampling, logging, crosshole experiments and long-term monitoring.

Site Specific Focuses are placed on mechanical and hydrological properties (e.g. strength, pore pressure,
Objectives with
Priority permeability, porosity), fluid budget, origin of the fluid, detection of episodic flow.
(Must include generalobjectives in proposal)

Borehole long-term observatory for hydrogeological properties is planned as well as crosshole experiment.
Priority:2

List Previous
Drilling in Area:

None

Section B: General Site Information
Site Name:
NT2-01A/B(e.g. SWPAC-01A)

If site is a reoccupationof an old DSDP/ODP
Site, Please include
former Site #Southwestern
NankaiArea or Location: Trough off Kumano

Latitude: Deg: 33

Min: 13.0 N

Jurisdiction:

Longitude: Deg: 136

Min: 41.4 E

Distance to Land:

Coordinates
System:Within Japanese EEZ
45 NM

WGS 84

Priority of Site: Primary:

Alt:

Water Depth:

2.470 mSection C: Operational Information

Proposed
Penetration:(m)

Sediments
1000

Basement
0

What is the total sed. thickness? >3,000m
Total Penetration:

General Lithologies:

700m

Upper section of splay faults, consisting of
deformed, compacted turbidite

Coring Plan:(Specify or Circle)
1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

Neutron-Porosity
Litho-Density

Borehole Televiewer
Nuclear Magnetic
Resonance

Gamma Ray

Geochemical

Resistivity

Side-Wall Core
Sampling

Acoustic
Formation Image

Others (Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:Cuttings Sampling Intervals

20(Riser Holes Only)

LWD
Density-Neutron
Resistivity-Gamma Ray

Formation Fluid Sampling
Borehole Temperature& Pressure
Borehole Seismic

Acoustic)

Others ( FMI

)

°C

from

200

m

to

300

m,

5

m intervals

from

700

m

to

900

m,

5

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Drilling/Coring: 15

Logging: 5

Total On-Site: 40

Longterm Borehole Observation Plan/Re-entry Plan

Geodetic (strain/tilt), seismic and hydrologic (P,T) sensors with casing(20 days)
Cross-hole experiments (5 days)
Hazards/
Weather:

Please check following List of Potential Hazards
Shallow Gas

Hydrocarbon

Complicated Seabed
Condition

Hydrothermal Activity

Soft SeabedLandslide and Turbidity Current

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

Shallow Water Flow

High Temperature

H 2S

CO2

High Dip Angle

Ice Conditions

What is your Weather
window? (Preferable periodwith the reasons)

May – August(typhoon risk in lateAugust to September,then low pressure in
Novemberthrough
March)

Form 2 - Site Survey Detail

iSAS/IODP Site Summary Forms:
Please fill out information in all gray boxes

roposal #:New

Site #: NT2-01A/B

Data TypeSSP
Requirements

ExistsIn DB

1High resolution
seismic reflection

YES

Deep Penetration
seismic reflection

YES

3

Seismic Velocity†

YES

4

Seismic Grid

YES

5a

Refraction

YES

Refraction

Details of available data and data that are still to be collected
Primary Line(s)JAMSTEC Line-I (Feb. 2003):Location of Site on line (SP or Time only)

JAMSTEC Line-9 (Feb. 2003)

Primary Line(s):KR0108-4

Location of Site on line (SP or Time only)

Crossing Lines(s):(surface)

5bDate Form Submitted: Oct. 1, 2003

Crossing Lines(s):2RevisedYES

Stacking velocity and migration velocity from MCS lines.
OBS data also available.
Acquired by JAMSTEC in Feb. 2003
Two-ship COP (max. offset 20km) was obtained by JAMSTEC in Sep.
2002
OBS data by Nakanishi et al. (1997)(near bottom)
Location of Site on line (Time)6

3.5 kHz

NO

7

YES

Multi-narrow beam data by JAMSTEC R/V Yokosuka

YES

Some data collected using IZANAGI side scan sonar

YES

Taken by submersibles of JASMTEC

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

YES

Obtained from surface ship, submersibles, long-erm monitoring and BSR

11a

Magnetics

YES

Compiled map published from AIST, Japan

11b

Gravity

YES

Compiled map published from AIST, Japan

12
13
14a
14b
15

YES
YES
YES

Gravity and piston cores
Taken by submersible and ROV
Available on JODC web page (http://www.jodc.go.jp/)

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

SSP Classification of Site:
SSP Comments:

NO

Being processed now
YES

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging PlaniSAS/IODP Site Summary Forms:
New

Proposal #:Water Depth (m): 2470

Site #: NT2-01A/B
Sed. Penetration (m): 1000

RevisedDate Form Submitted: Oct. 1, 2003
Basement Penetration (m): 0

Do you need to use the conical side-entry sub (CSES) at this site? Yes

No

Are high temperatures expected at this site?

Yes

No

Are there any other special requirements for logging at this site?

Yes

No

If “Yes” Please describe requirements:

What do you estimate the total logging time for this site to be:
Relevance(1=high, 3=Low)

Measurement Type
Neutron-Porosity

Scientific Objective
Estimation of water content in sedimentary sequences and basement.

1

Litho-Density

Estimation of water content,bulk density,and mineral composition in1

sedimentary sequences and basement.
Natural Gamma Ray

Estimation clay contents and mineral composition in sedimentary1

sequences and basement.
Resistivity-Induction

Estimation of water content and electro-magnetic properties in1

sedimentary sequences and basement.
Acoustic

FMS

Imaging of sedimentary structures and fractures.Core-log correlation of1

structural features.
BHTV

Resistivity-Laterolog
Magnetic/Susceptibility

Density-Neutron (LWD)

Estimation of water contents,bulk density,and lithology in unstable1

borehole environments.
Resitivity-Gamma

Ray

Estimation of water contents,bulk density,and lithology in unstable(LWD)

borehole environments.

Other: Special tools (CORK,

Cross-hole hydrologic and electrical experiment.

PACKER, VSP, PCS, FWS,

Hydrofracturing, Packer injection test

WSP

CORK and Geodetic borehole observatory

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

RAB

1

1

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

Form 4 – Pollution & Safety Hazard Summary

iSAS/IODP Site Summary Forms:
New

Please fill out information in all gray boxes

Proposal #:1

34Date Form Submitted: Oct. 1, 2003

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT2-01A/B

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information, list
all commercial drilling in thisarea that produced or yieldedsignificant hydrocarbon shows.
Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?

APC to refusal,then XCB to refusal.RCB to 1000 m

JNOC will conduct drilling in eastern Nankai in 2004. This datawill be used for ur
program.

None

Yes, MCS profile shows BSRs

5

Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.

6

What “special” precautions will
be taken during drilling?

Yes, During drilling into the fault zone, hole may collapse.

What abandonment procedures
do you plan to follow:

None

7

8

Please list other natural ormanmade hazards which may
effect ship’s operations:

Strong Kuroshio current, typhoon (June – October)(e.g. ice, currents, cables)

9

Revised

Summary: What do you
consider the major risks indrilling at this site?

Current

Form 5 – Lithologic Summary

iSAS/IODP Site Summary Forms:

New

Proposal #:Site #: NT2-01A/B

Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

300

Unconformity

800

fault

Age

Holoc
ene toMioce
neRevisedDate Form Submitted: Oct. 1, 2003

Assumedvelocity(km/sec)

Lithology

Paleoenvironment

1.62.5km/s

Slope
sediments

Accretionary
prism

to
old
accretionaryrocks

Avg. rateof sed.
accum.
(m/My)

Comments

iSAS/IODP Site Summary Forms:

603B-Full2

Form 1 - General Site Information
Please fill out information in all gray boxes

New

Revised 7 M arch 2002

RevisedSection A: Proposal Information
NanTroSEIZE Drilling and Observatory Phase 2
Mechanical and Hydrologic State of Mega-Splay Faults:
Implications for Seismogenic Faulting and Tsunami Generation

Title of Proposal:

Date Form
Submitted:

Oct. 1, 2003
Study the progressive change in the fault properties by intersecting the splay fault at

Site Specific intermediate depth of 2km. Integration with NT2-01A and NT2-03A are essential.
Objectives with
Priority(Must include generalobjectives in proposal)

List Previous
Drilling in Area:

Priority:2

None

Section B: General Site Information
Site Name:
NT2-02A(e.g. SWPAC-01A)

If site is a reoccupationof an old DSDP/ODP
Site, Please include
former Site #Southwestern
NankaiArea or Location: Trough off Kumano

Latitude: Deg: 33

Min: 14.0 N

Jurisdiction:

Longitude: Deg: 136

Min: 40.8 E

Distance to Land:

Coordinates
System:Within Japanese EEZ
45 NM

WGS 84

Priority of Site: Primary:

Alt:

Water Depth:

2,080 mSection C: Operational Information

Proposed
Penetration:(m)

Sediments
2000

Basement
0

What is the total sed. thickness? >3,000m
Total Penetration:

General Lithologies:

1,700

m

Slope basin sediment on top, fractured
section across the splay fault, and underlying
deformed, compacted turbidite

Coring Plan:(Specify or Circle)
1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

Neutron-Porosity
Litho-Density

Borehole Televiewer
Nuclear Magnetic
Resonance

Gamma Ray

Geochemical

Resistivity

Side-Wall Core
Sampling
Others (Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:Cuttings Sampling Intervals(Riser Holes Only)

Density-Neutron
Resistivity-Gamma Ray

Formation Fluid Sampling
Borehole Temperature& Pressure
Borehole Seismic

Acoustic
Formation Image

40-60

LWD

Acoustic)

Others ( FMI

)

°C

from

300

m

to

500

m,

5

m intervals

from

1700

m

to

1900

m,

5

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Hazards/
Weather:

Drilling/Coring: 25

Logging: 10

Total On-Site: 35

Longterm Borehole Observation Plan/Re-entry Plan

Please check following List of Potential Hazards
Shallow Gas

Hydrocarbon

Complicated Seabed
Condition

Hydrothermal Activity

Soft SeabedLandslide and Turbidity Current

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

Shallow Water Flow

High Temperature

H 2S

CO2

High Dip Angle

Ice Conditions

What is your Weather
window? (Preferable periodwith the reasons)

May – August(typhoon risk in lateAugust to September,then low pressure in
Novemberthrough
March)

Form 2 - Site Survey Detail

iSAS/IODP Site Summary Forms:
Please fill out information in all gray boxes

roposal #:New

Site #: NT2-02A

Data TypeSSP
Requirements

ExistsIn DB

1High resolution
seismic reflection

YES

Deep Penetration
seismic reflection

YES

3

Seismic Velocity†

YES

4

Seismic Grid

YES

5a

Refraction

YES

Refraction

Details of available data and data that are still to be collected
Primary Line(s)JAMSTEC Line-I (Feb. 2003):Location of Site on line (SP or Time only)

JAMSTEC Line-9 (Feb. 2003)

Primary Line(s):KR0108-4

Location of Site on line (SP or Time only)

Crossing Lines(s):(surface)

5bDate Form Submitted: Oct. 1, 2003

Crossing Lines(s):2RevisedYES

Stacking velocity and migration velocity from MCS lines.
OBS data also available.
Acquired by JAMSTEC in Feb. 2003
Two-ship COP (max. offset 20km) was obtained by JAMSTEC in Sep.
2002
OBS data by Nakanishi et al. (1997)(near bottom)
Location of Site on line (Time)6

3.5 kHz

NO

7

YES

Multi-narrow beam data by JAMSTEC R/V Yokosuka

YES

Some data collected using IZANAGI side scan sonar

YES

Taken by submersibles of JASMTEC

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

YES

Obtained from surface ship, submersibles, long-erm monitoring and BSR

11a

Magnetics

YES

Compiled map published from AIST, Japan

11b

Gravity

YES

Compiled map published from AIST, Japan

12
13
14a
14b
15

YES
YES
YES

Gravity and piston cores
Taken by submersible and ROV
Available on JODC web page (http://www.jodc.go.jp/)

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

SSP Classification of Site:
SSP Comments:

NO

Being processed now
YES

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging PlaniSAS/IODP Site Summary Forms:
New

Proposal #:Water Depth (m): 2080

Site #: NT2-02A
Sed. Penetration (m): 2000

RevisedDate Form Submitted: Oct. 1, 2003
Basement Penetration (m): 0

Do you need to use the conical side-entry sub (CSES) at this site? Yes

No

Are high temperatures expected at this site?

Yes

No

Are there any other special requirements for logging at this site?

Yes

No

If “Yes” Please describe requirements:

What do you estimate the total logging time for this site to be:
Relevance(1=high, 3=Low)

Measurement Type
Neutron-Porosity

Scientific Objective
Estimation of water content in sedimentary sequences and basement.

1

Litho-Density

Estimation of water content,bulk density,and mineral composition in1

sedimentary sequences and basement.
Natural Gamma Ray

Estimation clay contents and mineral composition in sedimentary1

sequences and basement.
Resistivity-Induction

Estimation of water content and electro-magnetic properties in1

sedimentary sequences and basement.
Acoustic

FMS

Imaging of sedimentary structures and fractures.Core-log correlation of1

structural features.
BHTV

Resistivity-Laterolog

Magnetic/Susceptibility

Density-Neutron (LWD)

Estimation of water contents,bulk density,and lithology in unstable1

borehole environments.
Resitivity-Gamma

Ray

(LWD)

Estimation of water contents,bulk density,and lithology in unstableborehole environments.

Other: Special tools (CORK,
PACKER, VSP, PCS, FWS,

1

2
RAB preferred

WSP

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

Form 4 – Pollution & Safety Hazard Summary

iSAS/IODP Site Summary Forms:
New

Please fill out information in all gray boxes

Proposal #:1

34Date Form Submitted: Oct. 1, 2003

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT2-02A

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information, list
all commercial drilling in thisarea that produced or yieldedsignificant hydrocarbon shows.
Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?

APC to refusal,then XCB to refusal.RCB to 2000 m

JNOC will conduct drilling in eastern Nankai in 2004. This datawill be used for ur
program.

None

Yes, MCS profile shows BSRs

5

Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.

6

What “special” precautions will
be taken during drilling?

Yes, During drilling into the fault zone, hole may collapse.

What abandonment procedures
do you plan to follow:

None

7

8

Please list other natural ormanmade hazards which may
effect ship’s operations:

Strong Kuroshio current, typhoon (June – October)(e.g. ice, currents, cables)

9

Revised

Summary: What do you
consider the major risks indrilling at this site?

Current

Form 5 – Lithologic Summary

iSAS/IODP Site Summary Forms:

New

Proposal #:Site #: NT2-02A

Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

400

Unconformity

1800

fault

Age

Holoc
ene toMioce
neRevisedDate Form Submitted: Oct. 1, 2003

Assumedvelocity(km/sec)

Lithology

Paleoenvironment

1.62.5km/s

Slope
sediments

Accretionary
prism

to
old
accretionaryrocks

Avg. rateof sed.
accum.
(m/My)

Comments

iSAS/IODP Site Summary Forms:

603B-Full2

Form 1 - General Site Information
Please fill out information in all gray boxes

New

Revised 7 M arch 2002

RevisedSection A: Proposal Information
NanTroSEIZE Drilling and Observatory Phase 2
Mechanical and Hydrologic State of Mega-Splay Faults:
Implications for Seismogenic Faulting and Tsunami Generation

Title of Proposal:

Date Form
Submitted:

Oct. 1, 2003
Study the progressive change in the fault properties by intersecting the splay fault at

Site Specific intermediate depth of 3.5km. Integration with NT2-01A and NT2-02A are essential.
Objectives with
Priority(Must include generalobjectives in proposal)

List Previous
Drilling in Area:

Priority:1

None

Section B: General Site Information
Site Name:
NT2-03A(e.g. SWPAC-01A)

If site is a reoccupationof an old DSDP/ODP
Site, Please include
former Site #Southwestern
NankaiArea or Location: Trough off Kumano

Latitude: Deg: 33

Min: 15.9 N

Jurisdiction:

Longitude: Deg: 136

Min: 39.5 E

Distance to Land:

Coordinates
System:Within Japanese EEZ
45 NM

WGS 84

Priority of Site: Primary:

Alt:

Water Depth:

2,240 mSection C: Operational Information

Proposed
Penetration:(m)

Sediments
3500

Basement
0

What is the total sed. thickness? >3,000m
Total Penetration:

2,200

m

General Lithologies:

Slope basin sediment on top, fractured
section across the splay fault, and underlying
deformed, compacted turbidite
Coring Plan: Continuous coring may be replaced with ordinary/LWD logging.

(Specify or Circle)

1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

Neutron-Porosity
Litho-Density

Borehole Televiewer
Nuclear Magnetic
Resonance

Gamma Ray

Geochemical

Resistivity

Side-Wall Core
Sampling
Others (Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:Cuttings Sampling Intervals

80-100Density-Neutron
Resistivity-Gamma Ray

Formation Fluid Sampling
Borehole Temperature& Pressure
Borehole Seismic

Acoustic
Formation Image(Riser Holes Only)

LWD

Acoustic)

Others ( FMI

)

°C

from

1700

m

to

1900

m,

5

m intervals

from

3300

m

to

3500

m,

5

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Drilling/Coring: 130

Logging: 20

Total On-Site: 250

Longterm Borehole Observation Plan/Re-entry Plan

Geodetic (strain/tilt), seismic and hydrologic (P,T) sensors (100 days?)
Hazards/
Weather:

Please check following List of Potential Hazards
Shallow Gas

Hydrocarbon

Complicated Seabed
Condition

Hydrothermal Activity

Soft SeabedLandslide and Turbidity Current

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

Shallow Water Flow

High Temperature

H 2S

CO2

High Dip Angle

Ice Conditions

What is your Weather
window? (Preferable periodwith the reasons)

May – August(typhoon risk in lateAugust to September,then low pressure in
Novemberthrough
March)

Form 2 - Site Survey Detail

iSAS/IODP Site Summary Forms:
Please fill out information in all gray boxes

roposal #:New

Site #: NT2-03A

Data TypeSSP
Requirements

ExistsIn DB

1High resolution
seismic reflection

YES

Deep Penetration
seismic reflection

YES

3

Seismic Velocity†

YES

4

Seismic Grid

YES

5a

Refraction

YES

Refraction

Details of available data and data that are still to be collected
Primary Line(s)JAMSTEC Line-I (Feb. 2003):Location of Site on line (SP or Time only)

JAMSTEC Line-9 (Feb. 2003)

Primary Line(s):KR0108-4

Location of Site on line (SP or Time only)

Crossing Lines(s):(surface)

5bDate Form Submitted: Oct. 1, 2003

Crossing Lines(s):2RevisedYES

Stacking velocity and migration velocity from MCS lines.
OBS data also available.
Acquired by JAMSTEC in Feb. 2003
Two-ship COP (max. offset 20km) was obtained by JAMSTEC in Sep.
2002
OBS data by Nakanishi et al. (1997)(near bottom)
Location of Site on line (Time)6

3.5 kHz

NO

7

YES

Multi-narrow beam data by JAMSTEC R/V Yokosuka

YES

Some data collected using IZANAGI side scan sonar

YES

Taken by submersibles of JASMTEC

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

YES

Obtained from surface ship, submersibles, long-erm monitoring and BSR

11a

Magnetics

YES

Compiled map published from AIST, Japan

11b

Gravity

YES

Compiled map published from AIST, Japan

12
13
14a
14b
15

YES
YES
YES

Gravity and piston cores
Taken by submersible and ROV
Available on JODC web page (http://www.jodc.go.jp/)

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

SSP Classification of Site:
SSP Comments:

NO

Being processed now
YES

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging PlaniSAS/IODP Site Summary Forms:
New

Proposal #:Water Depth (m): 2240

Site #: NT2-03A
Sed. Penetration (m): 3500

RevisedDate Form Submitted: Oct. 1, 2003
Basement Penetration (m): 0

Do you need to use the conical side-entry sub (CSES) at this site? Yes

No

Are high temperatures expected at this site?

Yes

No

Are there any other special requirements for logging at this site?

Yes

No

If “Yes” Please describe requirements:

What do you estimate the total logging time for this site to be:
Relevance(1=high, 3=Low)

Measurement Type
Neutron-Porosity

Scientific Objective
Estimation of water content in sedimentary sequences and basement.

1

Litho-Density

Estimation of water content,bulk density,and mineral composition in1

sedimentary sequences and basement.
Natural Gamma Ray

Estimation clay contents and mineral composition in sedimentary1

sequences and basement.
Resistivity-Induction

Estimation of water content and electro-magnetic properties in1

sedimentary sequences and basement.
Acoustic

FMS

Imaging of sedimentary structures and fractures.Core-log correlation of1

structural features.
BHTV

Resistivity-Laterolog
Magnetic/Susceptibility

Density-Neutron (LWD)

Estimation of water contents,bulk density,and lithology in unstable1

borehole environments.
Resitivity-Gamma

Ray

Estimation of water contents,bulk density,and lithology in unstable(LWD)

borehole environments.

Other: Special tools (CORK,

RAB, VSP

PACKER, VSP, PCS, FWS,

Hydrofracturing, Packer injection test

WSP

CORK and Geodetic/Seismic borehole observatory

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

1

1

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

Form 4 – Pollution & Safety Hazard Summary

iSAS/IODP Site Summary Forms:
New

Please fill out information in all gray boxes

Proposal #:1

34Date Form Submitted: Oct. 1, 2003

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT2-03A

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information, list
all commercial drilling in thisarea that produced or yieldedsignificant hydrocarbon shows.
Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?

APC to refusal,then XCB to refusal.RCB to 3500 m

JNOC will conduct drilling in eastern Nankai in 2004. This datawill be used for ur
program.

None

Yes, MCS profile shows BSRs

5

Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.

6

What “special” precautions will
be taken during drilling?

Yes, During drilling into the fault zone, hole may collapse.

What abandonment procedures
do you plan to follow:

None

7

8

Please list other natural ormanmade hazards which may
effect ship’s operations:

Strong Kuroshio current, typhoon (June – October)(e.g. ice, currents, cables)

9

Revised

Summary: What do you
consider the major risks indrilling at this site?

Current

Form 5 – Lithologic Summary

iSAS/IODP Site Summary Forms:

New

Proposal #:Site #: NT2-03A

Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

300

Unconformity

1800

Fault

3400

fault

Age

Holoc
ene toMioce
neRevisedDate Form Submitted: Oct. 1, 2003

Assumedvelocity(km/sec)

Lithology

Paleoenvironment

1.62.5km/s

Slope
sediments

Accretionary
prism

to
old
accretionaryrocks

Avg. rateof sed.
accum.
(m/My)

Comments

iSAS/IODP Site Summary Forms:

603B-Full2

Form 1 - General Site Information
Please fill out information in all gray boxes

New

Revised 7 M arch 2002

RevisedSection A: Proposal Information
NanTroSEIZE Drilling and Observatory Phase 2
Mechanical and Hydrologic State of Mega-Splay Faults:
Implications for Seismogenic Faulting and Tsunami Generation

Title of Proposal:

Date Form
Submitted:

Oct. 1, 2003
Total history of the splay fault system through continuous coring the Kumano foreac basin

sediments: Objective 1 is the primary target of this site. Total history of the splay fault system
Site SpecificObjectives with is depicted by integrating the results from NT1b-05A as a reference for this site.
Priority(Must include general Drilling the underlying acoustic basement is planned to clarify the structure of pst
objectives in proposal)

accretionary complex, but is also used as a pilot drilling for the future riser-based proposal.
Priority:4

List Previous
Drilling in Area:

None

Section B: General Site Information
Site Name:
NT2-04A(e.g. SWPAC-01A)

If site is a reoccupationof an old DSDP/ODP
Site, Please include
former Site #Southwestern
NankaiArea or Location: Trough off Kumano

Latitude: Deg: 33

Min: 23.4 N

Jurisdiction:

Longitude: Deg: 136

Min: 34.6 E

Distance to Land:

Coordinates
System:Within Japanese EEZ
37 NM

WGS 84

Priority of Site: Primary:

Alt:

Water Depth:

1,990 mSection C: Operational Information

Proposed
Penetration:(m)

Sediments
1,400

Basement
300

What is the total sed. thickness? 1,400m
Total Penetration:

General Lithologies:

1,700

m

Forearc basin sediment with unconformity
laying on acoustic basement of Tertiallyaccretionary complex

Coring Plan:(Specify or Circle)
1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

Neutron-Porosity
Litho-Density

Borehole Televiewer
Nuclear Magnetic
Resonance

Gamma Ray

Geochemical

Resistivity

Side-Wall Core
Sampling
Others (Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:Cuttings Sampling Intervals(Riser Holes Only)

Density-Neutron

Formation Fluid Sampling
Borehole Temperature& Pressure
Borehole Seismic

Acoustic
Formation Image70

LWD
Resistivity-Gamma Ray
Acoustic)

Others ( FMI

)

°C

from

m

to

m,

m intervals

from

m

to

m,

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Hazards/
Weather:

Drilling/Coring: 15

Logging: 3

Total On-Site: 18

Longterm Borehole Observation Plan/Re-entry Plan

Please check following List of Potential Hazards
Shallow Gas

Hydrocarbon

Complicated Seabed
Condition

Hydrothermal Activity

Soft SeabedLandslide and Turbidity Current

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

Shallow Water Flow

High Temperature

H 2S

CO2

High Dip Angle

Ice Conditions

What is your Weather
window? (Preferable periodwith the reasons)

May – August(typhoon risk in lateAugust to September,then low pressure in
Novemberthrough
March)

Form 2 - Site Survey Detail

iSAS/IODP Site Summary Forms:
Please fill out information in all gray boxes

roposal #:New

Site #: NT2-04A

Data TypeSSP
Requirements

ExistsIn DB

1High resolution
seismic reflection

YES

Deep Penetration
seismic reflection

YES

3

Seismic Velocity†

YES

4

Seismic Grid

YES

5a

Refraction

YES

Refraction

Details of available data and data that are still to be collected
Primary Line(s)JAMSTEC Line-I (Feb. 2003):Location of Site on line (SP or Time only)

JAMSTEC Line (Feb. 2003)

Primary Line(s):KR0108-4

Location of Site on line (SP or Time only)

Crossing Lines(s):(surface)

5bDate Form Submitted: Oct. 1, 2003

Crossing Lines(s):2RevisedYES

Stacking velocity and migration velocity from MCS lines.
OBS data also available.
Acquired by JAMSTEC in Feb. 2003
Two-ship COP (max. offset 20km) was obtained by JAMSTEC in Sep.
2002
OBS data by Nakanishi et al. (1997)(near bottom)
Location of Site on line (Time)6

3.5 kHz

NO

7

YES

Multi-narrow beam data by JAMSTEC R/V Yokosuka

YES

Some data collected using IZANAGI side scan sonar

YES

Taken by submersibles of JASMTEC

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

YES

Obtained from surface ship, submersibles, long-erm monitoring and BSR

11a

Magnetics

YES

Compiled map published from AIST, Japan

11b

Gravity

YES

Compiled map published from AIST, Japan

12
13
14a
14b
15

YES
YES
YES

Gravity and piston cores
Taken by submersible and ROV
Available on JODC web page (http://www.jodc.go.jp/)

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

SSP Classification of Site:
SSP Comments:

NO

Being processed now
YES

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging PlaniSAS/IODP Site Summary Forms:
New

Proposal #:Water Depth (m): 1990

Site #: NT2-04A
Sed. Penetration (m): 1400

RevisedDate Form Submitted: Oct. 1, 2003
Basement Penetration (m): 300

Do you need to use the conical side-entry sub (CSES) at this site? Yes

No

Are high temperatures expected at this site?

Yes

No

Are there any other special requirements for logging at this site?

Yes

No

If “Yes” Please describe requirements:

What do you estimate the total logging time for this site to be:
Relevance(1=high, 3=Low)

Measurement Type
Neutron-Porosity

Scientific Objective
Estimation of water content in sedimentary sequences and basement.

1

Litho-Density

Estimation of water content,bulk density,and mineral composition in1

sedimentary sequences and basement.
Natural Gamma Ray

Estimation clay contents and mineral composition in sedimentary1

sequences and basement.
Resistivity-Induction

Estimation of water content and electro-magnetic properties in1

sedimentary sequences and basement.
Acoustic

FMS

Imaging of sedimentary structures and fractures.Core-log correlation of1

structural features.
BHTV

Resistivity-Laterolog

Magnetic/Susceptibility

Density-Neutron (LWD).
Resitivity-Gamma

Ray

(LWD)
Other: Special tools (CORK,
PACKER, VSP, PCS, FWS,WSP

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

Form 4 – Pollution & Safety Hazard Summary

iSAS/IODP Site Summary Forms:
New

Please fill out information in all gray boxes

Proposal #:1

34Date Form Submitted: Oct. 1, 2003

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT2-04A

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information, list
all commercial drilling in thisarea that produced or yieldedsignificant hydrocarbon shows.
Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?

APC to refusal,then XCB to refusal.RCB to 1700 m

JNOC will conduct drilling in eastern Nankai in 2004. This datawill be used for ur
program.

None

Yes, MCS profile shows BSRs

5

Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.

6

What “special” precautions will
be taken during drilling?

Yes, During drilling into the fault zone, hole may collapse.

What abandonment procedures
do you plan to follow:

None

7

8

Please list other natural ormanmade hazards which may
effect ship’s operations:

Strong Kuroshio current, typhoon (June – October)(e.g. ice, currents, cables)

9

Revised

Summary: What do you
consider the major risks indrilling at this site?

Current

Form 5 – Lithologic Summary

iSAS/IODP Site Summary Forms:

New

Proposal #:Site #: NT2-04A

Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

1400

Unconformity

Age

Holoc
ene tolate
TertialyAssumedvelocity(km/sec)

1.52.0km/s

RevisedDate Form Submitted: Oct. 1, 2003

Lithology

Paleoenvironment

Turbidite &hemipelagic
sediments

Forearc basin

Avg. rateof sed.
accum.
(m/My)

Comments

Fan deposits?

603B-Full2

iSAS/IODP Site Summary Forms:
Form 1 - General Site Information
Please fill out information in all gray boxes

New

Revised 7 M arch 2002

RevisedSection A: Proposal Information
NanTroSEIZE Drilling and Observatory Phase 2
Mechanical and Hydrologic State of Mega-Splay Faults:
Implications for Seismogenic Faulting and Tsunami Generation

Title of Proposal:

Date Form
Submitted:

Oct. 1, 2003
Characterization of active splay fault and fluid flow regime by core sampling, logging, crosshole experiments and long-term monitoring.

Site Specific Focuses are placed on mechanical and hydrological properties (e.g. strength, pore pressure,
Objectives with
Priority permeability, porosity), fluid budget, origin of the fluid, detection of episodic flow.
(Must include generalobjectives in proposal)

Borehole long-term observatory for hydrogeological properties is planned as well as crosshole experiment.
Priority:3 (Alternate site for NT2-01A/B)

List Previous
Drilling in Area:

None

Section B: General Site Information
Site Name:
NT2-06A/B(e.g. SWPAC-01A)

If site is a reoccupationof an old DSDP/ODP
Site, Please include
former Site #Southwestern
NankaiArea or Location: Trough off Kumano

Latitude: Deg: 33

Min: 06.6 N

Jurisdiction:

Longitude: Deg: 136

Min: 31.3 E

Distance to Land:

Coordinates
System:Within Japanese EEZ
45 NM

WGS 84

Priority of Site: Primary:Water Depth:

Alt:

1

2.990 mSection C: Operational Information

Proposed
Penetration:(m)

Sediments
1000

Basement
0

What is the total sed. thickness? >3,000m
Total Penetration:

General Lithologies:

700m

Upper section of splay faults, consisting of
deformed, compacted turbidite

Coring Plan:(Specify or Circle)
1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

Neutron-Porosity
Litho-Density

Borehole Televiewer
Nuclear Magnetic
Resonance

Gamma Ray

Geochemical

Resistivity

Side-Wall Core
Sampling

Acoustic
Formation Image

Others (Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:Cuttings Sampling Intervals

20(Riser Holes Only)

LWD
Density-Neutron
Resistivity-Gamma Ray

Formation Fluid Sampling
Borehole Temperature& Pressure
Borehole Seismic

Acoustic)

Others ( FMI

)

°C

from

200

m

to

300

m,

5

m intervals

from

700

m

to

900

m,

5

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Drilling/Coring: 15

Logging: 5

Total On-Site: 40

Longterm Borehole Observation Plan/Re-entry Plan

Geodetic (strain/tilt), seismic and hydrologic (P,T) sensors with casing(20 days)
Cross-hole experiments (5 days)
Hazards/
Weather:

Please check following List of Potential Hazards
Shallow Gas

Hydrocarbon

Complicated Seabed
Condition

Hydrothermal Activity

Soft SeabedLandslide and Turbidity Current

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

Shallow Water Flow

High Temperature

H 2S

High Dip Angle

CO2

2

Ice Conditions

What is your Weather
window? (Preferable periodwith the reasons)

May – August(typhoon risk in lateAugust to September,then low pressure in
Novemberthrough
March)

Form 2 - Site Survey Detail

iSAS/IODP Site Summary Forms:
Please fill out information in all gray boxes

roposal #:New

Site #: NT2-06A/B

Data TypeSSP
Requirements

ExistsIn DB

1High resolution
seismic reflection

YES

Deep Penetration
seismic reflection

YES

3

Seismic Velocity†

YES

4

Seismic Grid

YES

5a

Refraction

YES

Refraction

Details of available data and data that are still to be collected
Primary Line(s)JAMSTEC Line-I (Feb. 2003):Location of Site on line (SP or Time only)

JAMSTEC Line-9 (Feb. 2003)

Primary Line(s):KR0108-4

Location of Site on line (SP or Time only)

Crossing Lines(s):(surface)

5bDate Form Submitted: Oct. 1, 2003

Crossing Lines(s):2RevisedYES

Stacking velocity and migration velocity from MCS lines.
OBS data also available.
Acquired by JAMSTEC in Feb. 2003
Two-ship COP (max. offset 20km) was obtained by JAMSTEC in Sep.
2002
OBS data by Nakanishi et al. (1997)(near bottom)
Location of Site on line (Time)6

3.5 kHz

NO

7

YES

Multi-narrow beam data by JAMSTEC R/V Yokosuka

YES

Some data collected using IZANAGI side scan sonar

YES

Taken by submersibles of JASMTEC

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

YES

Obtained from surface ship, submersibles, long-erm monitoring and BSR

11a

Magnetics

YES

Compiled map published from AIST, Japan

11b

Gravity

YES

Compiled map published from AIST, Japan

12
13
14a
14b
15

YES
YES
YES

Gravity and piston cores
Taken by submersible and ROV
Available on JODC web page (http://www.jodc.go.jp/)

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

SSP Classification of Site:
SSP Comments:

NO

Being processed now
YES

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging PlaniSAS/IODP Site Summary Forms:
New

Proposal #:Water Depth (m): 2990

Site #: NT2-06A/B
Sed. Penetration (m): 1000

RevisedDate Form Submitted: Oct. 1, 2003
Basement Penetration (m): 0

Do you need to use the conical side-entry sub (CSES) at this site? Yes

No

Are high temperatures expected at this site?

Yes

No

Are there any other special requirements for logging at this site?

Yes

No

If “Yes” Please describe requirements:

What do you estimate the total logging time for this site to be:
Relevance(1=high, 3=Low)

Measurement Type
Neutron-Porosity

Scientific Objective
Estimation of water content in sedimentary sequences and basement.

1

Litho-Density

Estimation of water content,bulk density,and mineral composition in1

sedimentary sequences and basement.
Natural Gamma Ray

Estimation clay contents and mineral composition in sedimentary1

sequences and basement.
Resistivity-Induction

Estimation of water content and electro-magnetic properties in1

sedimentary sequences and basement.
Acoustic

FMS

Imaging of sedimentary structures and fractures.Core-log correlation of1

structural features.
BHTV

Resistivity-Laterolog
Magnetic/Susceptibility

Density-Neutron (LWD)

Estimation of water contents,bulk density,and lithology in unstable1

borehole environments.
Resitivity-Gamma

Ray

Estimation of water contents,bulk density,and lithology in unstable(LWD)

borehole environments.

Other: Special tools (CORK,

Cross-hole hydrologic and electrical experiment.

PACKER, VSP, PCS, FWS,

Hydrofracturing, Packer injection test

WSP

CORK and Geodetic borehole observatory

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

RAB

1

1

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

Form 4 – Pollution & Safety Hazard Summary

iSAS/IODP Site Summary Forms:
New

Please fill out information in all gray boxes

Proposal #:1

34Date Form Submitted: Oct. 1, 2003

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT2-06A/B

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information, list
all commercial drilling in thisarea that produced or yieldedsignificant hydrocarbon shows.
Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?

APC to refusal,then XCB to refusal.RCB to 1000 m

JNOC will conduct drilling in eastern Nankai in 2004. This datawill be used for ur
program.

None

Yes, MCS profile shows BSRs

5

Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.

6

What “special” precautions will
be taken during drilling?

Yes, During drilling into the fault zone, hole may collapse.

What abandonment procedures
do you plan to follow:

None

7

8

Please list other natural ormanmade hazards which may
effect ship’s operations:

Strong Kuroshio current, typhoon (June – October)(e.g. ice, currents, cables)

9

Revised

Summary: What do you
consider the major risks indrilling at this site?

Current

Form 5 – Lithologic Summary

iSAS/IODP Site Summary Forms:

New

Proposal #:Site #: NT2-06A/B

Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

300

Unconformity

800

fault

Age

Holoc
ene toMioce
neRevisedDate Form Submitted: Oct. 1, 2003

Assumedvelocity(km/sec)

Lithology

Paleoenvironment

1.62.5km/s

Slope
sediments

Accretionary
prism

to
old
accretionaryrocks

Avg. rateof sed.
accum.
(m/My)

Comments

iSAS/IODP Site Summary Forms:

603B-Full2

Form 1 - General Site Information
Please fill out information in all gray boxes

New

Revised 7 M arch 2002

RevisedSection A: Proposal Information
NanTroSEIZE Drilling and Observatory Phase 2
Mechanical and Hydrologic State of Mega-Splay Faults:
Implications for Seismogenic Faulting and Tsunami Generation

Title of Proposal:

Date Form
Submitted:

Oct. 1, 2003
Study the progressive change in the fault properties by intersecting the splay fault at

Site Specific intermediate depth of 2km. Integration with NT2-01A and NT2-03A are essential.
Objectives with
Priority(Must include generalobjectives in proposal)

List Previous
Drilling in Area:

Priority:2 (Alternate site for NT2-02A)

None

Section B: General Site Information
Site Name:
NT2-07A(e.g. SWPAC-01A)

If site is a reoccupationof an old DSDP/ODP
Site, Please include
former Site #Southwestern
NankaiArea or Location: Trough off Kumano

Latitude: Deg: 33

Min: 08.6 N

Jurisdiction:

Longitude: Deg: 136

Min: 30.0 E

Distance to Land:

Coordinates
System:Within Japanese EEZ
45 NM

WGS 84

Priority of Site: Primary:

Alt:

Water Depth:

2,260 mSection C: Operational Information

Proposed
Penetration:(m)

Sediments
2000

Basement
0

What is the total sed. thickness? >3,000m
Total Penetration:

General Lithologies:

1,700

m

Slope basin sediment on top, fractured
section across the splay fault, and underlying
deformed, compacted turbidite

Coring Plan:(Specify or Circle)
1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

Neutron-Porosity
Litho-Density

Borehole Televiewer
Nuclear Magnetic
Resonance

Gamma Ray

Geochemical

Resistivity

Side-Wall Core
Sampling
Others (Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:Cuttings Sampling Intervals(Riser Holes Only)

Density-Neutron
Resistivity-Gamma Ray

Formation Fluid Sampling
Borehole Temperature& Pressure
Borehole Seismic

Acoustic
Formation Image

40-60

LWD

Acoustic)

Others ( FMI

)

°C

from

300

m

to

500

m,

5

m intervals

from

1700

m

to

1900

m,

5

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Hazards/
Weather:

Drilling/Coring: 25

Logging: 10

Total On-Site: 35

Longterm Borehole Observation Plan/Re-entry Plan

Please check following List of Potential Hazards
Shallow Gas

Hydrocarbon

Complicated Seabed
Condition

Hydrothermal Activity

Soft SeabedLandslide and Turbidity Current

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

Shallow Water Flow

High Temperature

H 2S

CO2

High Dip Angle

Ice Conditions

What is your Weather
window? (Preferable periodwith the reasons)

May – August(typhoon risk in lateAugust to September,then low pressure in
Novemberthrough
March)

Form 2 - Site Survey Detail

iSAS/IODP Site Summary Forms:
Please fill out information in all gray boxes

roposal #:New

Site #: NT2-07A

Data TypeSSP
Requirements

ExistsIn DB

1High resolution
seismic reflection

YES

Deep Penetration
seismic reflection

YES

3

Seismic Velocity†

YES

4

Seismic Grid

YES

5a

Refraction

YES

Refraction

Details of available data and data that are still to be collected
Primary Line(s)JAMSTEC Line-I (Feb. 2003):Location of Site on line (SP or Time only)

JAMSTEC Line-9 (Feb. 2003)

Primary Line(s):KR0108-4

Location of Site on line (SP or Time only)

Crossing Lines(s):(surface)

5bDate Form Submitted: Oct. 1, 2003

Crossing Lines(s):2RevisedYES

Stacking velocity and migration velocity from MCS lines.
OBS data also available.
Acquired by JAMSTEC in Feb. 2003
Two-ship COP (max. offset 20km) was obtained by JAMSTEC in Sep.
2002
OBS data by Nakanishi et al. (1997)(near bottom)
Location of Site on line (Time)6

3.5 kHz

NO

7

YES

Multi-narrow beam data by JAMSTEC R/V Yokosuka

YES

Some data collected using IZANAGI side scan sonar

YES

Taken by submersibles of JASMTEC

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

YES

Obtained from surface ship, submersibles, long-erm monitoring and BSR

11a

Magnetics

YES

Compiled map published from AIST, Japan

11b

Gravity

YES

Compiled map published from AIST, Japan

12
13
14a
14b
15

YES
YES
YES

Gravity and piston cores
Taken by submersible and ROV
Available on JODC web page (http://www.jodc.go.jp/)

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

SSP Classification of Site:
SSP Comments:

NO

Being processed now
YES

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging PlaniSAS/IODP Site Summary Forms:
New

Proposal #:Water Depth (m): 2260

Site #: NT2-07A
Sed. Penetration (m): 2000

RevisedDate Form Submitted: Oct. 1, 2003
Basement Penetration (m): 0

Do you need to use the conical side-entry sub (CSES) at this site? Yes

No

Are high temperatures expected at this site?

Yes

No

Are there any other special requirements for logging at this site?

Yes

No

If “Yes” Please describe requirements:

What do you estimate the total logging time for this site to be:
Relevance(1=high, 3=Low)

Measurement Type
Neutron-Porosity

Scientific Objective
Estimation of water content in sedimentary sequences and basement.

1

Litho-Density

Estimation of water content,bulk density,and mineral composition in1

sedimentary sequences and basement.
Natural Gamma Ray

Estimation clay contents and mineral composition in sedimentary1

sequences and basement.
Resistivity-Induction

Estimation of water content and electro-magnetic properties in1

sedimentary sequences and basement.
Acoustic

FMS

Imaging of sedimentary structures and fractures.Core-log correlation of1

structural features.
BHTV

Resistivity-Laterolog

Magnetic/Susceptibility

Density-Neutron (LWD)

Estimation of water contents,bulk density,and lithology in unstable1

borehole environments.
Resitivity-Gamma

Ray

(LWD)

Estimation of water contents,bulk density,and lithology in unstableborehole environments.

Other: Special tools (CORK,
PACKER, VSP, PCS, FWS,

1

2
RAB preferred

WSP

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

Form 4 – Pollution & Safety Hazard Summary

iSAS/IODP Site Summary Forms:
New

Please fill out information in all gray boxes

Proposal #:1

34Date Form Submitted: Oct. 1, 2003

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT2-07A

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information, list
all commercial drilling in thisarea that produced or yieldedsignificant hydrocarbon shows.
Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?

APC to refusal,then XCB to refusal.RCB to 2000 m

JNOC will conduct drilling in eastern Nankai in 2004. This datawill be used for ur
program.

None

Yes, MCS profile shows BSRs

5

Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.

6

What “special” precautions will
be taken during drilling?

Yes, During drilling into the fault zone, hole may collapse.

What abandonment procedures
do you plan to follow:

None

7

8

Please list other natural ormanmade hazards which may
effect ship’s operations:

Strong Kuroshio current, typhoon (June – October)(e.g. ice, currents, cables)

9

Revised

Summary: What do you
consider the major risks indrilling at this site?

Current

Form 5 – Lithologic Summary

iSAS/IODP Site Summary Forms:

New

Proposal #:Site #: NT2-07A

Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

400

Unconformity

1800

fault

Age

Holoc
ene toMioce
neRevisedDate Form Submitted: Oct. 1, 2003

Assumedvelocity(km/sec)

Lithology

Paleoenvironment

1.62.5km/s

Slope
sediments

Accretionary
prism

to
old
accretionaryrocks

Avg. rateof sed.
accum.
(m/My)

Comments

iSAS/IODP Site Summary Forms:

603B-Full2

Form 1 - General Site Information
Please fill out information in all gray boxes

New

Revised 7 M arch 2002

RevisedSection A: Proposal Information
NanTroSEIZE Drilling and Observatory Phase 2
Mechanical and Hydrologic State of Mega-Splay Faults:
Implications for Seismogenic Faulting and Tsunami Generation

Title of Proposal:

Date Form
Submitted:

Oct. 1, 2003
Study the progressive change in the fault properties by intersecting the splay fault at

Site Specific intermediate depth of 3.5km. Integration with NT2-01A and NT2-02A are essential.
Objectives with
Priority(Must include generalobjectives in proposal)

List Previous
Drilling in Area:

Priority:1 (Alternate site for NT2-03A)

None

Section B: General Site Information
Site Name:
NT2-08A(e.g. SWPAC-01A)

If site is a reoccupationof an old DSDP/ODP
Site, Please include
former Site #Southwestern
NankaiArea or Location: Trough off Kumano

Latitude: Deg: 33

Min: 10.8 N

Jurisdiction:

Longitude: Deg: 136

Min: 28.6 E

Distance to Land:

Coordinates
System:Within Japanese EEZ
45 NM

WGS 84

Priority of Site: Primary:

Alt:

Water Depth:

2,170 mSection C: Operational Information

Proposed
Penetration:(m)

Sediments
3500

Basement
0

What is the total sed. thickness? >3,000m
Total Penetration:

2,200

m

General Lithologies:

Slope basin sediment on top, fractured
section across the splay fault, and underlying
deformed, compacted turbidite
Coring Plan: Continuous coring may be replaced with ordinary/LWD logging.

(Specify or Circle)

1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

Neutron-Porosity
Litho-Density

Borehole Televiewer
Nuclear Magnetic
Resonance

Gamma Ray

Geochemical

Resistivity

Side-Wall Core
Sampling
Others (Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:Cuttings Sampling Intervals

80-100Density-Neutron
Resistivity-Gamma Ray

Formation Fluid Sampling
Borehole Temperature& Pressure
Borehole Seismic

Acoustic
Formation Image(Riser Holes Only)

LWD

Acoustic)

Others ( FMI

)

°C

from

1700

m

to

1900

m,

5

m intervals

from

3300

m

to

3500

m,

5

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Drilling/Coring: 130

Logging: 20

Total On-Site: 250

Longterm Borehole Observation Plan/Re-entry Plan

Geodetic (strain/tilt), seismic and hydrologic (P,T) sensors (100 days?)
Hazards/
Weather:

Please check following List of Potential Hazards
Shallow Gas

Hydrocarbon

Complicated Seabed
Condition

Hydrothermal Activity

Soft SeabedLandslide and Turbidity Current

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

Shallow Water Flow

High Temperature

H 2S

CO2

High Dip Angle

Ice Conditions

What is your Weather
window? (Preferable periodwith the reasons)

May – August(typhoon risk in lateAugust to September,then low pressure in
Novemberthrough
March)

Form 2 - Site Survey Detail

iSAS/IODP Site Summary Forms:
Please fill out information in all gray boxes

roposal #:New

Site #: NT2-08A

Data TypeSSP
Requirements

ExistsIn DB

1High resolution
seismic reflection

YES

Deep Penetration
seismic reflection

YES

3

Seismic Velocity†

YES

4

Seismic Grid

YES

5a

Refraction

YES

Refraction

Details of available data and data that are still to be collected
Primary Line(s)JAMSTEC Line-I (Feb. 2003):Location of Site on line (SP or Time only)

JAMSTEC Line-9 (Feb. 2003)

Primary Line(s):KR0108-4

Location of Site on line (SP or Time only)

Crossing Lines(s):(surface)

5bDate Form Submitted: Oct. 1, 2003

Crossing Lines(s):2RevisedYES

Stacking velocity and migration velocity from MCS lines.
OBS data also available.
Acquired by JAMSTEC in Feb. 2003
Two-ship COP (max. offset 20km) was obtained by JAMSTEC in Sep.
2002
OBS data by Nakanishi et al. (1997)(near bottom)
Location of Site on line (Time)6

3.5 kHz

NO

7

YES

Multi-narrow beam data by JAMSTEC R/V Yokosuka

YES

Some data collected using IZANAGI side scan sonar

YES

Taken by submersibles of JASMTEC

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

YES

Obtained from surface ship, submersibles, long-erm monitoring and BSR

11a

Magnetics

YES

Compiled map published from AIST, Japan

11b

Gravity

YES

Compiled map published from AIST, Japan

12
13
14a
14b
15

YES
YES
YES

Gravity and piston cores
Taken by submersible and ROV
Available on JODC web page (http://www.jodc.go.jp/)

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

SSP Classification of Site:
SSP Comments:

NO

Being processed now
YES

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging PlaniSAS/IODP Site Summary Forms:
New

Proposal #:Water Depth (m): 2170

Site #: NT2-08A
Sed. Penetration (m): 3500

RevisedDate Form Submitted: Oct. 1, 2003
Basement Penetration (m): 0

Do you need to use the conical side-entry sub (CSES) at this site? Yes

No

Are high temperatures expected at this site?

Yes

No

Are there any other special requirements for logging at this site?

Yes

No

If “Yes” Please describe requirements:

What do you estimate the total logging time for this site to be:
Relevance(1=high, 3=Low)

Measurement Type
Neutron-Porosity

Scientific Objective
Estimation of water content in sedimentary sequences and basement.

1

Litho-Density

Estimation of water content,bulk density,and mineral composition in1

sedimentary sequences and basement.
Natural Gamma Ray

Estimation clay contents and mineral composition in sedimentary1

sequences and basement.
Resistivity-Induction

Estimation of water content and electro-magnetic properties in1

sedimentary sequences and basement.
Acoustic

FMS

Imaging of sedimentary structures and fractures.Core-log correlation of1

structural features.
BHTV

Resistivity-Laterolog
Magnetic/Susceptibility

Density-Neutron (LWD)

Estimation of water contents,bulk density,and lithology in unstable1

borehole environments.
Resitivity-Gamma

Ray

Estimation of water contents,bulk density,and lithology in unstable(LWD)

borehole environments.

Other: Special tools (CORK,

RAB, VSP

PACKER, VSP, PCS, FWS,

Hydrofracturing, Packer injection test

WSP

CORK and Geodetic/Seismic borehole observatory

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

1

1

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

Form 4 – Pollution & Safety Hazard Summary

iSAS/IODP Site Summary Forms:
New

Please fill out information in all gray boxes

Proposal #:1

34Date Form Submitted: Oct. 1, 2003

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT2-08A

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information, list
all commercial drilling in thisarea that produced or yieldedsignificant hydrocarbon shows.
Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?

APC to refusal,then XCB to refusal.RCB to 3500 m

JNOC will conduct drilling in eastern Nankai in 2004. This datawill be used for ur
program.

None

Yes, MCS profile shows BSRs

5

Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.

6

What “special” precautions will
be taken during drilling?

Yes, During drilling into the fault zone, hole may collapse.

What abandonment procedures
do you plan to follow:

None

7

8

Please list other natural ormanmade hazards which may
effect ship’s operations:

Strong Kuroshio current, typhoon (June – October)(e.g. ice, currents, cables)

9

Revised

Summary: What do you
consider the major risks indrilling at this site?

Current

Form 5 – Lithologic Summary

iSAS/IODP Site Summary Forms:

New

Proposal #:Site #: NT2-08A

Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

300

Unconformity

1800

Fault

3400

fault

Age

Holoc
ene toMioce
neRevisedDate Form Submitted: Oct. 1, 2003

Assumedvelocity(km/sec)

Lithology

Paleoenvironment

1.62.5km/s

Slope
sediments

Accretionary
prism

to
old
accretionaryrocks

Avg. rateof sed.
accum.
(m/My)

Comments

Received 1 April 2004

IODP Proposal Cover Sheet
New

RevisedAddendum

Above For Official Use Only

Please fill out information in all gray boxes
Title:

603C-Full

NanTroSEIZE Drilling and Observatory Phase 3: A Window into the
Seismogenic Zone

Proponent(s): Kiyoshi Suyehiro, Harold Tobin, Eiichiro Araki, Susan Bilek, Tadanori Goto, Pierre Henry,
Gaku Kimura, Aitaro Kato, Masa Kinoshita, Chris Marone, Greg Moore, J. Casey Moore,
Demian Saffer, Arito Sakaguchi, Masanao Shinohara, Ralph Stephen, Akito Tsutsumi,
Kohtaro Ujiie, Kelin Wang
Keywords: Seismogenic zone, fault mechanics, borehole observatory,
SouthwesternArea:(5 or less) tsunamigenesis
Japan margin

Contact Information:
Contact Person:
Department:
Organization:
AddressTel.:
E-mail:Harold Tobin
Earth and Environmental Science Department
New Mexico Tech
Socorro, NM 87801 USA
505-835-5920
Fax: 505-835-6436
tobin@nmt.edu
Permission to post abstract on iSAS Web site:

Yes

No

Abstract: (400 words or less)
The principal goal of NanTroSEIZE is to understand seismogenesis and rupture propagation along subduction
plate boundary faults by direct testing of key hypotheses related to the mechanics of subduction megathrusts.
NanTroSEIZE Phase 3 represents the culmination of the Seismogenic Zone Initiative: drilling into,
sampling, and monitoring of the subduction zone plate interface at depths of coseismic slip. This proposal
centers on the deepest drilling effort in the NanTroSEIZE project: sampling a single site across the entire plateinterface into the top of the subducting Philippine Sea plate. The proposed borehole will penetrate a major splay
fault (~4 km bsf) potentially implicated in coseismic slip, as well as the master decollement (~6 km bsf), at alocation of shallow large slip during the 1944 Tonankai Mw 8.2 earthquake.
The goal of this proposal is to address two key questions by a combination of logging, coring, down-hole
experiments, and long-term monitoring:(1) What controls the nature of fault slip and its spatial variability (i.e. the updip transition from aseismic toseismogenic slip)?
(2) What processes control temporal changes in slip behavior on a given fault?
Specifically, this proposal is aimed at testing hypotheses explaining controls on unstable slip, and documenting theroles of fault zone state (stress, fluid pressure, fabric) and composition in controlling frictional rheology. Downhole and monitoring observations, core analyses, and post-cruise laboratory studies will provide direct tests ofexisting hypothesis for fault zone frictional behavior. One focus of Phase 3 will be on documenting the material
properties and ambient conditions at each of the two faults, and comparing results with findings from shallower
portions of the plate boundary system sampled during Phases 1 and 2 to rigorously characterize controls on fault
slip behavior in an active megathrust system.
Proposedactivities include (1) drilling, LWD, and casing of a main hole - with drillstem tests performed at
casing set points, (2) creation of a sidetrack coring hole with continuous coring from 4000-6200 mbsf, and (3) welltests in perforated casing and installation of an observatory system for continuous monitoring of pore fluidpressure, temperature, strain, tilt, and seismicity. The borehole observatories, along with surface arrays ofmeasurements, and regional geodetic and seismic monitoring, will provide critical data toward understanding theslip distribution, temporal variability, and controlling mechanisms of seismogenic faulting along the plate boundary
system.

603C-Full
Scientific Objectives: (250 words or less)
The scientific objectives of NanTroSEIZE Phase 3 drilling are to use direct observation to rigorously
evaluate the following hypotheses, which are central to understanding earthquake mechanics along subduction
megathrusts:(1) Systematic, progressive material and state changes control the onset of seismogenic behavior on subduction
thrusts; (2) Subduction zone megathrusts are weak faults; (3) Within the seismogenic zone, relative plate motion is
primarily accommodated by coseismic frictional slip in a concentrated zone; (4) Physical properties, chemistry, andstate of the fault zone change systematically with time throughout the earthquake cycle; and (5) The mega-splay(OOST) thrust fault system slips in discrete events which may include tsunamigenic slip during great earthquakes.
These hypotheses will be evaluated by detailed characterization – in fault zones and in the surrounding rock volume –of the lithology, structural geology, and physical properties of the rock; the geochemistry of pore fluids; themicrobiological activity; the distribution of temperature, stress, and pore fluid pressure in space and time; theseismicity in the near-borehole environment and downdip; the temporal evolution of the strain field; and the evolutionof physical properties in the volume around the borehole.

Please describe below any non-standard measurements technology needed to achieve the proposed scientific objectives.
Essentially all technologies to be used are non-standard. These will include, but are not limited to:Riser-based drilling, LWD suite, DVTP-P, active hydrofracturing tests (wireline packer test), VSP.
A borehole observatory with multi-level packers and perforated intervals, Geodetic (strain/tilt), seismic andhydrologic (P,T) sensors and other instruments will be installed for a long-term borehole observatory.

Proposed Sites:

NT3-01A

33°17.6’N, 136°38.6’E

Water
Depth
(m)
1950

NT3-02A

33°12.9’N, 136°27.4’E

2100

Site Name

Position

Penetration (m)
Sed

Bsm

Total

Brief Site-specific Objectives

6000

200

6200

Study the progressive change inthe fault properties byintersecting the splay fault at~4.5km and the seismogenic
fault at 5.8 to 6km depth

6000

200

6200

Alternate site for NT3-01A

603C-Full

iSAS/IODP Site Summary Forms:
Form 1 - General Site Information
Please fill out information in all gray boxes

New

Revised 7 March 2002

RevisedSection A: Proposal Information
Title of Proposal:

Date Form
Submitted:

NanTroSEIZE Drilling and Observatory Phase 3: A Window into the
Seismogenic Zone
Apr. 1, 2003
Sample and instrument decollement, mega-splay, and wall rock of lower prism to address
fault rheology, slip history, and temporal change objectives.

Site SpecificObjectives with Priority:1
Priority(Must include generalobjectives in proposal)

None
List Previous
Drilling in Area:

Section B: General Site Information
Site Name:
NT3-01A(e.g. SWPAC-01A)

If site is a reoccupationof an old DSDP/ODP
Site, Please include
former Site #Area or Location:

Latitude: Deg: 33

Min: 17.6 N

Jurisdiction:

Longitude: Deg: 136

Min: 38.6 E

Distance to Land:

Coordinates
System:S o u t h w e s t e r nNankai
Trough off Kumano
Within Japanese EEZ
45 NM

WGS 84

Priority of Site: Primary: X

Alt:

Water Depth:

1,950 mSection C: Operational Information

Proposed
Penetration:(m)

Sediments
5800 - 6000

Basement
200

What is the total sed. thickness? >5,500m
Total Penetration:

6,200

m

General Lithologies:

Slope basin clastic sediments, accreted anddeformed trench turbidites, hemipelagic andpelagic mudstones, pillow basalt.
Coring Plan: Continuous coring may be replaced with LWD logging in intervals(Specify or Circle)

1-2-3-APC VPC*

XCB

MDCB*

PCS RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:

Special Tools

Standard Tools
Neutron-Porosity
Litho-Density

Borehole Televiewer
Nuclear Magnetic
Resonance

Gamma Ray

Geochemical

Resistivity

Side-Wall Core
Sampling

Acoustic
Formation Image

Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:Cuttings Sampling Intervals

150-170 degC

(Riser Holes Only)

LWD
Density-Neutron
Resistivity-Gamma Ray

Formation Fluid Sampling
Borehole Temperature& Pressure
Borehole Seismic

Acoustic

Others (Others ( FMI

)

)

°C

from

1500

m

to

3600

m,

5

m intervals

from

4300

m

to

6200

m,

5

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Drilling/Coring: ???

Logging: ??

Total On-Site: ???

Longterm Borehole Observation Plan/Re-entry Plan

Long-term observatory installation and data telemetry/recording
Hazards/
Weather:

Please check following List of Potential Hazards
Shallow Gas

Hydrocarbon

Complicated Seabed
Condition

Hydrothermal Activity

Soft SeabedLandslide and Turbidity Current

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

Shallow Water Flow

High Temperature
H2S

CO2

High Dip Angle

Ice Conditions

What is your Weather
window? (Preferable periodwith the reasons)

May – August optimal(typhoon risk in lateAugust to September)Form 2 - Site Survey Detail

iSAS/IODP Site Summary Forms:
Please fill out information in all gray boxes

Proposal #:New

Site #: NT3-01A

Data TypeSSP
Requirements

ExistsIn DB

1High resolution
seismic reflection

YES

Deep Penetration
seismic reflection

YES

3

Seismic Velocity†

YES

4

Seismic Grid

YES

5a

Refraction

YES

Details of available data and data that are still to be collected
Primary Line(s)JAMSTEC Line-L (Feb. 2003):Location of Site on line (SP or Time only)

Primary Line(s):KR0108-5

Location of Site on line (SP or Time only)

Crossing Lines(s):(surface)

Refraction

Date Form Submitted: Apr. 1, 2003

Crossing Lines(s): JAMSTEC Line-9 (Feb. 2003)

2

5b

RevisedYES

Stacking velocity and PODM migration velocity from MCS lines.
OBS wide-angle data also available.
Acquired by JAMSTEC in Feb. 2003, also IFREE lines from 1998 - 2003
Two-ship COP (max. offset 20km) was obtained by JAMSTEC in Sep.
2002
OBS data by Nakanishi et al. (1997)(near bottom)
Location of Site on line (Time)6

3.5 kHz

NO

7

YES

Multi-narrow beam data by JAMSTEC R/V Yokosuka

YES

Some data collected using IZANAGI side scan sonar

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

11a

8a
8b
9

NO
YES

Taken by submersibles of JASMTEC

YES

Obtained from surface ship, submersibles, long-term monitoring and BSR

Magnetics

YES

Compiled map published from AIST, Japan

11b

Gravity

YES

Compiled map published from AIST, Japan

12
13
14a
14b
15

YES
YES
YES

Gravity and piston cores
Taken by submersible and ROV
Available on JODC web page (http://www.jodc.go.jp/)

YES

Obana et al., in press

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

SSP Classification of Site:
SSP Comments:

YES

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging PlaniSAS/IODP Site Summary Forms:
New

Proposal #:Water Depth (m): 1950

Site #: NT3-01A
Sed. Penetration (m): 6000

Do you need to use the conical side-entry sub (CSES) at this site? Yes
Are high temperatures expected at this site?
Yes
Are there any other special requirements for logging at this site? Yes
If “Yes” Please describe requirements:

RevisedDate Form Submitted: Apr. 1, 2003
Basement Penetration (m): 200
No
No
No

What do you estimate the total logging time for this site to be:
Relevance(1=high, 3=Low)

Measurement Type
Neutron-Porosity

Scientific Objective
Estimation of water content in sedimentary sequences and basement.

1

Litho-Density

Estimation of water content,bulk density,and mineral composition in1

sedimentary sequences and basement.
Natural Gamma Ray

Estimation clay contents and mineral composition in sedimentary1

sequences and basement.
Resistivity-Induction

Estimation of water content and electro-magnetic properties in1

sedimentary sequences and basement.
Acoustic

Yes, dipole sonic, LWD sonic for physical properties

FMS

Preferably FMI & RAB. Imaging of sedimentary structures and1

fractures.Core-log correlation of structural features.
BHTV

Perhaps?

Resistivity-Laterolog

LWD resistivity

Magnetic/Susceptibility

Density-Neutron (LWD)

Estimation of water contents,bulk density,and lithology in unstable1

borehole environments.
Resitivity-Gamma

Ray

Estimation of water contents,bulk density,and lithology in unstable(LWD)

borehole environments.

Other: Special tools (CORK,

RAB, VSP

PACKER, VSP, PCS, FWS,

Hydrofracturing, Packer injection test

WSP

Geodetic/Seismic and multi-level packer borehole observatory

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

1

1

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

iSAS/IODP Site Summary Forms:

Form 4 – Pollution & Safety Hazard Summary

Please fill out information in all gray boxes

Proposal #:
1

3

4

5

6

7

8

Site #: NT3-01A

Date Form Submitted: Apr. 1, 2003

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information,
list all commercial drilling inthis area that produced or
yielded significant hydrocarbon
shows. Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?
Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.
What “special” precautions will
be taken during drilling?

What abandonment procedures
do you plan to follow:
Please list other natural ormanmade hazards which may
effect ship’s operations:

APC to refusal,then XCB to refusal.RCB to 6200 m or 200 m into basement.

JNOC will conduct BSR drilling in eastern Nankai in 2004. This data will be used forour program.

None

Yes, MCS profile shows BSRs

Except for normal gas hydrate occurrence, none.

Fault zones are likely unstable and overpressured, prone to collapse, possible pressure
kicks.

Unknown at this time for riser operations

Strong Kuroshio current, typhoon (June – October)(e.g. ice, currents, cables)

9

Revised

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)

2

New

Summary: What do you
consider the major risks indrilling at this site?

Current, shallow overpressure (but latter is probably not major

Form 5 – Lithologic Summary

iSAS/IODP Site Summary Forms:
Proposal #:Site #: NT3-01A

Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

200
1000

Unconformity
Unconformity

4500

Fault

6000

fault

Age

Holoc
ene to
Mioce
ne

New

RevisedDate Form Submitted: Apr. 1, 2003

Assumedvelocity(km/sec)

Lithology

Paleoenvironment

1.62.5km/s

Slope
sediments

Accretionary
prism

to
old
accretionaryrocks

Avg. rateof sed.
accum.
(m/My)

Comments

603C-Full

iSAS/IODP Site Summary Forms:
Form 1 - General Site Information
Please fill out information in all gray boxes

New

Revised 7 March 2002

RevisedSection A: Proposal Information
Title of Proposal:

Date Form
Submitted:

NanTroSEIZE Drilling and Observatory Phase 3: A Window into the
Seismogenic Zone
Apr. 1, 2003
Sample and instrument decollement, mega-splay, and wall rock of lower prism to address
fault rheology, slip history, and temporal change objectives.

Site SpecificObjectives with Priority:2
Priority(Must include generalobjectives in proposal)

None
List Previous
Drilling in Area:

Section B: General Site Information
Site Name:
NT3-02A(e.g. SWPAC-01A)

If site is a reoccupationof an old DSDP/ODP
Site, Please include
former Site #Area or Location:

Latitude: Deg: 33

Min: 12.9 N

Jurisdiction:

Longitude: Deg: 136

Min: 27.4 E

Distance to Land:

Coordinates
System:S o u t h w e s t e r nNankai
Trough off Kumano
Within Japanese EEZ
45 NM

WGS 84

Priority of Site: Primary: X

Alt: X

Water Depth:

1,950 mSection C: Operational Information

Proposed
Penetration:(m)

Sediments
5800 - 6000

Basement
200

What is the total sed. thickness? >5,500m
Total Penetration:

6,200

m

General Lithologies:

Slope basin clastic sediments, accreted anddeformed trench turbidites, hemipelagic andpelagic mudstones, pillow basalt.
Coring Plan: Continuous coring may be replaced with LWD logging in intervals(Specify or Circle)

1-2-3-APC VPC*

XCB

MDCB*

PCS RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:

Special Tools

Standard Tools
Neutron-Porosity
Litho-Density

Borehole Televiewer
Nuclear Magnetic
Resonance

Gamma Ray

Geochemical

Resistivity

Side-Wall Core
Sampling

Acoustic
Formation Image

Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:Cuttings Sampling Intervals

150-170 degC

(Riser Holes Only)

LWD
Density-Neutron
Resistivity-Gamma Ray

Formation Fluid Sampling
Borehole Temperature& Pressure
Borehole Seismic

Acoustic

Others (Others ( FMI

)

)

°C

from

1500

m

to

3600

m,

5

m intervals

from

4300

m

to

6200

m,

5

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Drilling/Coring: ???

Logging: ??

Total On-Site: ???

Longterm Borehole Observation Plan/Re-entry Plan

Long-term observatory installation and data telemetry/recording
Hazards/
Weather:

Please check following List of Potential Hazards
Shallow Gas

Hydrocarbon

Complicated Seabed
Condition

Hydrothermal Activity

Soft SeabedLandslide and Turbidity Current

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

Shallow Water Flow

High Temperature
H2S

CO2

High Dip Angle

Ice Conditions

What is your Weather
window? (Preferable periodwith the reasons)

May – August optimal(typhoon risk in lateAugust to September)Form 2 - Site Survey Detail

iSAS/IODP Site Summary Forms:
Please fill out information in all gray boxes

Proposal #:New

Site #: NT3-02A

Data TypeSSP
Requirements

ExistsIn DB

1High resolution
seismic reflection

YES

Deep Penetration
seismic reflection

YES

3

Seismic Velocity†

YES

4

Seismic Grid

YES

5a

Refraction

YES

Details of available data and data that are still to be collected
Primary Line(s)JAMSTEC Line-B (Feb. 2003):Location of Site on line (SP or Time only)

Primary Line(s):KR0108-5, 3Location of Site on line (SP or Time only)

Crossing Lines(s):(surface)

Refraction

Date Form Submitted: Apr. 1, 2003

Crossing Lines(s): JAMSTEC Line-9 (Feb. 2003)

2

5b

RevisedYES

Stacking velocity and PODM migration velocity from MCS lines.
OBS wide-angle data also available.
Acquired by JAMSTEC in Feb. 2003, also IFREE lines from 1998 - 2003
Two-ship COP (max. offset 20km) was obtained by JAMSTEC in Sep.
2002
OBS data by Nakanishi et al. (1997)(near bottom)
Location of Site on line (Time)6

3.5 kHz

NO

7

YES

Multi-narrow beam data by JAMSTEC R/V Yokosuka

YES

Some data collected using IZANAGI side scan sonar

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

11a

8a
8b
9

NO
YES

Taken by submersibles of JASMTEC

YES

Obtained from surface ship, submersibles, long-term monitoring and BSR

Magnetics

YES

Compiled map published from AIST, Japan

11b

Gravity

YES

Compiled map published from AIST, Japan

12
13
14a
14b
15

YES
YES
YES

Gravity and piston cores
Taken by submersible and ROV
Available on JODC web page (http://www.jodc.go.jp/)

YES

Obana et al., in press

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

SSP Classification of Site:
SSP Comments:

YES

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging PlaniSAS/IODP Site Summary Forms:
New

Proposal #:Water Depth (m): 1950

Site #: NT3-01A
Sed. Penetration (m): 6000

Do you need to use the conical side-entry sub (CSES) at this site? Yes
Are high temperatures expected at this site?
Yes
Are there any other special requirements for logging at this site? Yes
If “Yes” Please describe requirements:

RevisedDate Form Submitted: Apr. 1, 2003
Basement Penetration (m): 200
No
No
No

What do you estimate the total logging time for this site to be:
Relevance(1=high, 3=Low)

Measurement Type
Neutron-Porosity

Scientific Objective
Estimation of water content in sedimentary sequences and basement.

1

Litho-Density

Estimation of water content,bulk density,and mineral composition in1

sedimentary sequences and basement.
Natural Gamma Ray

Estimation clay contents and mineral composition in sedimentary1

sequences and basement.
Resistivity-Induction

Estimation of water content and electro-magnetic properties in1

sedimentary sequences and basement.
Acoustic

Yes, dipole sonic, LWD sonic for physical properties

FMS

Preferably FMI & RAB. Imaging of sedimentary structures and1

fractures.Core-log correlation of structural features.
BHTV

Perhaps?

Resistivity-Laterolog

LWD resistivity

Magnetic/Susceptibility

Density-Neutron (LWD)

Estimation of water contents,bulk density,and lithology in unstable1

borehole environments.
Resitivity-Gamma

Ray

Estimation of water contents,bulk density,and lithology in unstable(LWD)

borehole environments.

Other: Special tools (CORK,

RAB, VSP

PACKER, VSP, PCS, FWS,

Hydrofracturing, Packer injection test

WSP

Geodetic/Seismic and multi-level packer borehole observatory

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

1

1

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

iSAS/IODP Site Summary Forms:

Form 4 – Pollution & Safety Hazard Summary

Please fill out information in all gray boxes

Proposal #:
1

3

4

5

6

7

8

Site #: NT3-01A

Date Form Submitted: Apr. 1, 2003

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information,
list all commercial drilling inthis area that produced or
yielded significant hydrocarbon
shows. Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?
Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.
What “special” precautions will
be taken during drilling?

What abandonment procedures
do you plan to follow:
Please list other natural ormanmade hazards which may
effect ship’s operations:

APC to refusal,then XCB to refusal.RCB to 6200 m or 200 m into basement.

JNOC will conduct BSR drilling in eastern Nankai in 2004. This data will be used forour program.

None

Yes, MCS profile shows BSRs

Except for normal gas hydrate occurrence, none.

Fault zones are likely unstable and overpressured, prone to collapse, possible pressure
kicks.

Unknown at this time for riser operations

Strong Kuroshio current, typhoon (June – October)(e.g. ice, currents, cables)

9

Revised

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)

2

New

Summary: What do you
consider the major risks indrilling at this site?

Current, shallow overpressure (but latter is probably not major

Form 5 – Lithologic Summary

iSAS/IODP Site Summary Forms:
Proposal #:Site #: NT3-01A

Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

200
1000

Unconformity
Unconformity

4500

Fault

6000

fault

Age

Holoc
ene to
Mioce
ne

New

RevisedDate Form Submitted: Apr. 1, 2003

Assumedvelocity(km/sec)

Lithology

Paleoenvironment

1.62.5km/s

Slope
sediments

Accretionary
prism

to
old
accretionaryrocks

Avg. rateof sed.
accum.
(m/My)

Comments

Received 1 April 2004

IODP Proposal Cover Sheet
New

RevisedAddendum

Above For Official Use Only

Please fill out information in all gray boxes
Title:

603C-Full

NanTroSEIZE Drilling and Observatory Phase 3: A Window into the
Seismogenic Zone

Proponent(s): Kiyoshi Suyehiro, Harold Tobin, Eiichiro Araki, Susan Bilek, Tadanori Goto, Pierre Henry,
Gaku Kimura, Aitaro Kato, Masa Kinoshita, Chris Marone, Greg Moore, J. Casey Moore,
Demian Saffer, Arito Sakaguchi, Masanao Shinohara, Ralph Stephen, Akito Tsutsumi,
Kohtaro Ujiie, Kelin Wang
Keywords: Seismogenic zone, fault mechanics, borehole observatory,
SouthwesternArea:(5 or less) tsunamigenesis
Japan margin

Contact Information:
Contact Person:
Department:
Organization:
AddressTel.:
E-mail:Harold Tobin
Earth and Environmental Science Department
New Mexico Tech
Socorro, NM 87801 USA
505-835-5920
Fax: 505-835-6436
tobin@nmt.edu
Permission to post abstract on iSAS Web site:

Yes

No

Abstract: (400 words or less)
The principal goal of NanTroSEIZE is to understand seismogenesis and rupture propagation along subduction
plate boundary faults by direct testing of key hypotheses related to the mechanics of subduction megathrusts.
NanTroSEIZE Phase 3 represents the culmination of the Seismogenic Zone Initiative: drilling into,
sampling, and monitoring of the subduction zone plate interface at depths of coseismic slip. This proposal
centers on the deepest drilling effort in the NanTroSEIZE project: sampling a single site across the entire plateinterface into the top of the subducting Philippine Sea plate. The proposed borehole will penetrate a major splay
fault (~4 km bsf) potentially implicated in coseismic slip, as well as the master decollement (~6 km bsf), at alocation of shallow large slip during the 1944 Tonankai Mw 8.2 earthquake.
The goal of this proposal is to address two key questions by a combination of logging, coring, down-hole
experiments, and long-term monitoring:(1) What controls the nature of fault slip and its spatial variability (i.e. the updip transition from aseismic toseismogenic slip)?
(2) What processes control temporal changes in slip behavior on a given fault?
Specifically, this proposal is aimed at testing hypotheses explaining controls on unstable slip, and documenting theroles of fault zone state (stress, fluid pressure, fabric) and composition in controlling frictional rheology. Downhole and monitoring observations, core analyses, and post-cruise laboratory studies will provide direct tests ofexisting hypothesis for fault zone frictional behavior. One focus of Phase 3 will be on documenting the material
properties and ambient conditions at each of the two faults, and comparing results with findings from shallower
portions of the plate boundary system sampled during Phases 1 and 2 to rigorously characterize controls on fault
slip behavior in an active megathrust system.
Proposedactivities include (1) drilling, LWD, and casing of a main hole - with drillstem tests performed at
casing set points, (2) creation of a sidetrack coring hole with continuous coring from 4000-6200 mbsf, and (3) welltests in perforated casing and installation of an observatory system for continuous monitoring of pore fluidpressure, temperature, strain, tilt, and seismicity. The borehole observatories, along with surface arrays ofmeasurements, and regional geodetic and seismic monitoring, will provide critical data toward understanding theslip distribution, temporal variability, and controlling mechanisms of seismogenic faulting along the plate boundary
system.

603C-Full
Scientific Objectives: (250 words or less)
The scientific objectives of NanTroSEIZE Phase 3 drilling are to use direct observation to rigorously
evaluate the following hypotheses, which are central to understanding earthquake mechanics along subduction
megathrusts:(1) Systematic, progressive material and state changes control the onset of seismogenic behavior on subduction
thrusts; (2) Subduction zone megathrusts are weak faults; (3) Within the seismogenic zone, relative plate motion is
primarily accommodated by coseismic frictional slip in a concentrated zone; (4) Physical properties, chemistry, andstate of the fault zone change systematically with time throughout the earthquake cycle; and (5) The mega-splay(OOST) thrust fault system slips in discrete events which may include tsunamigenic slip during great earthquakes.
These hypotheses will be evaluated by detailed characterization – in fault zones and in the surrounding rock volume –of the lithology, structural geology, and physical properties of the rock; the geochemistry of pore fluids; themicrobiological activity; the distribution of temperature, stress, and pore fluid pressure in space and time; theseismicity in the near-borehole environment and downdip; the temporal evolution of the strain field; and the evolutionof physical properties in the volume around the borehole.

Please describe below any non-standard measurements technology needed to achieve the proposed scientific objectives.
Essentially all technologies to be used are non-standard. These will include, but are not limited to:Riser-based drilling, LWD suite, DVTP-P, active hydrofracturing tests (wireline packer test), VSP.
A borehole observatory with multi-level packers and perforated intervals, Geodetic (strain/tilt), seismic andhydrologic (P,T) sensors and other instruments will be installed for a long-term borehole observatory.

Proposed Sites:

NT3-01A

33°17.6’N, 136°38.6’E

Water
Depth
(m)
1950

NT3-02A

33°12.9’N, 136°27.4’E

2100

Site Name

Position

Penetration (m)
Sed

Bsm

Total

Brief Site-specific Objectives

6000

200

6200

Study the progressive change inthe fault properties byintersecting the splay fault at~4.5km and the seismogenic
fault at 5.8 to 6km depth

6000

200

6200

Alternate site for NT3-01A

Received 1 April 2005

IODP Proposal Cover SheetNewX Revised603D-Full2

Addendum

Above For Official Use Only

Please fill out information in all gray boxes
Title:The Nankai Trough Seismogenic Zone Experiment: Observatory Science at theReference Sites

Proponent(s):Elizabeth Screaton, Michael Underwood, Demian Saffer, Kelin Wang, Geoff Wheat, Koichiro
Obana, Greg Moore, Kevin Brown, Juichiro Ashi

Keywords:(5 or less)

Subduction inputs; hydrogeology; long-term observatories

Area:

Nankai TroughShikoku Basin

Contact Information:
Contact Person:
Department:
Organization:
AddressTel.:
E-mail:Elizabeth Screaton
Department of Geology
University of Florida
PO Box 112120, 241 Williamson, Gainesville FL 32611 USA(352) 392-4612
Fax: (352) 392-9294
screaton@ ufl.edu
Permission to post abstract on IODP-MI Sapporo Web site:

X

Yes

No

Abstract: (400 words or less)
The NanTroSEIZE Complex Drilling Plan describes a multi-phase strategy to get at the root cause of the transition
from stable sliding to stick-slip fault behavior -- by intersecting the “seismogenic conveyor belt” of Nankai Troughon either side of its up-dip limit of seismicity. With a campaign of coring, logging, downhole measurements, andlong-term observatory science, NanTroSEIZE will test hypotheses concerning the onset of seismogenic behavior
and locking of subduction thrusts. Characterizing the inputs to the seismogenic zone through examination ofreference sites is a vital component of NanTroSEIZE. This revised full proposal outlines scientific rationale andplans for installation of long-term borehole observatories at NantroSEIZE reference sites. Monitoring at theseobservatories serves two distinct purposes. First, the observatories will provide information on material properties
and background geophysical and geochemical conditions. The state of stress and strength of coupling on theplate-boundary fault are acutely sensitive to 3-D variations in pore pressure, and these pore pressures will begreatly affected by the distribution and permeability of turbidites and the permeability of the ocean crust. Second,observatories allow us to detect temporal changes in the geophysical or geochemical conditions and even thematerial properties. Temporal changes include the gradual stress build-up during the interseismic period.
Associated variations in the thermal and hydrological regimes, and episodic seismic and aseismic strain events,
could show how the seismogenic zone adjusts to new conditions caused by the stress build-up, which elevates
predictive understanding of the seismogenic zone. Two reference sites in Shikoku Basin, on a basement high andbasement plain, will show how stratigraphy, basement topography, and thermal structure affect the physical andhydrologic properties of subduction inputs. Each will require a pair of screened intervals: one targeting open
basement and one targeting the overlying sediment. A site located 7 km seaward of the deformation front will
indicate how far pressure and chemistry anomalies are transmitted seaward of the deformation front. CORK
monitoring at the toe of the accretionary prism will isolate temperature and pressure signals in the frontal
décollement from signals in the subducting turbidites. A second shallow observatory at the prism toe will monitor
micro-seismicity and strain. An observatory in Kumano Basin provides an important complement to backgroundand transient data obtained within and seaward of the mega-splay system. This monitoring network will provide avital context for observations within the plate boundary fault system.

603D-Full2
Scientific Objectives: (250 words or less)Coring, logging, and conventional downhole measurements will commence at four reference sites during Phase I and
II of the Nankai Trough Seismogenic Zone Experiment. This proposal describes scientific objectives for long-termborehole observatories to be installed at four of these sites and one additional site. The fundamental objectives of the
proposed observatory science are to map background properties of the incoming sediment and crust and to monitor
temporal changes associated with the seismic cycle. Specific objectives include:(1) Monitor the differences in hydrologic properties and fluid-flow signals where basement highs are subducting
versus where basement plains are subducting.
(2) Determine if, where, and why compartments of excess pore pressure develop seaward of the deformation front; if
present, determine their effect on early-subduction fault dynamics.
(3) Compare hydrologic properties and fluid-flow signals in turbidite sand bodies before and after they have passed
beneath the toe of the accretionary prism Assess the role of these turbidite sand bodies in drainage of deeper
sediments, and impacts of drainage on plate boundary strength.
(4) Monitor hydrologic properties and fluid-flow signals within the frontal décollement zone for rigorous comparison
against properties and flow in subducted sand lenses beneath the décollement.
(5) Determine how basement fluid flow influences margin-scale patterns of heat flow and fluid flow.
(6) Monitor micro-seismicity, strain, and fluid flow response to tectonic events.

Please describe below any non-standard measurements technology needed to achieve the proposed scientific objectives.

Proposed Sites:
Site Name

Position

Water
Depth
(m)

Penetration (m)
Sed

Bsm

Total

NT1-01A

Lat: 32° 44.8878’N
Long: 136° 55.0236’E

3540

460m

40m

500m

NT1-02A

Lat: 32° 47.4996’N
Long: 137° 09.2784’ E

4210

730m

40m

770m

NT1-03A

Lat: 33° 01.23258’N
Long: 136° 47.9485’E

4125

1200m

0m

1200m

NT1-05A

Lat: 33° 01.3482’N
Long: 137° 3.3432’E

4310

1528m

40m

1568m

NT1-06A

Lat: 32° 51.35’N
Long: 137° 17.58’E

4200

990m

40m

1030m

NT2-04A

Lat: 33° 23.4’N,
Long: 136° 34.6’E

1990

1400m
forearcbasin

40m
acoustic
basement

1440m

Brief Site-specific Objectives
One CORK hole with screened
interval in position equivalent toturbidites and sealed basement.
Companion CORK hole with fully
cased sediment & open basement.
One CORK hole with screened
interval in turbidites and sealed
basement. Companion CORK holewith fully cased sediment and open
basement.
CORK monitoring of décollement andturbidites; will not extend tobasement. Monitor micro-seismicity
and strain.
One CORK hole with screened
intervals in turbidites and sealed
basement. Companion CORK holewith fully cased sediment and open
basement.
Alternate to NT1-02A. One CORK
hole with screened interval inturbidites and sealed basement.
Companion CORK hole with fully
cased sediment and open basement.
One CORK hole with screened
intervals in sediments. Monitor
micro-seismicity and strain.

Received 1 April 2005

IODP Proposal Cover SheetNewX Revised603D-Full2

Addendum

Above For Official Use Only

Please fill out information in all gray boxes
Title:The Nankai Trough Seismogenic Zone Experiment: Observatory Science at theReference Sites

Proponent(s):Elizabeth Screaton, Michael Underwood, Demian Saffer, Kelin Wang, Geoff Wheat, Koichiro
Obana, Greg Moore, Kevin Brown, Juichiro Ashi

Keywords:(5 or less)

Subduction inputs; hydrogeology; long-term observatories

Area:

Nankai TroughShikoku Basin

Contact Information:
Contact Person:
Department:
Organization:
AddressTel.:
E-mail:Elizabeth Screaton
Department of Geology
University of Florida
PO Box 112120, 241 Williamson, Gainesville FL 32611 USA(352) 392-4612
Fax: (352) 392-9294
screaton@ ufl.edu
Permission to post abstract on IODP-MI Sapporo Web site:

X

Yes

No

Abstract: (400 words or less)
The NanTroSEIZE Complex Drilling Plan describes a multi-phase strategy to get at the root cause of the transition
from stable sliding to stick-slip fault behavior -- by intersecting the “seismogenic conveyor belt” of Nankai Troughon either side of its up-dip limit of seismicity. With a campaign of coring, logging, downhole measurements, andlong-term observatory science, NanTroSEIZE will test hypotheses concerning the onset of seismogenic behavior
and locking of subduction thrusts. Characterizing the inputs to the seismogenic zone through examination ofreference sites is a vital component of NanTroSEIZE. This revised full proposal outlines scientific rationale andplans for installation of long-term borehole observatories at NantroSEIZE reference sites. Monitoring at theseobservatories serves two distinct purposes. First, the observatories will provide information on material properties
and background geophysical and geochemical conditions. The state of stress and strength of coupling on theplate-boundary fault are acutely sensitive to 3-D variations in pore pressure, and these pore pressures will begreatly affected by the distribution and permeability of turbidites and the permeability of the ocean crust. Second,observatories allow us to detect temporal changes in the geophysical or geochemical conditions and even thematerial properties. Temporal changes include the gradual stress build-up during the interseismic period.
Associated variations in the thermal and hydrological regimes, and episodic seismic and aseismic strain events,
could show how the seismogenic zone adjusts to new conditions caused by the stress build-up, which elevates
predictive understanding of the seismogenic zone. Two reference sites in Shikoku Basin, on a basement high andbasement plain, will show how stratigraphy, basement topography, and thermal structure affect the physical andhydrologic properties of subduction inputs. Each will require a pair of screened intervals: one targeting open
basement and one targeting the overlying sediment. A site located 7 km seaward of the deformation front will
indicate how far pressure and chemistry anomalies are transmitted seaward of the deformation front. CORK
monitoring at the toe of the accretionary prism will isolate temperature and pressure signals in the frontal
décollement from signals in the subducting turbidites. A second shallow observatory at the prism toe will monitor
micro-seismicity and strain. An observatory in Kumano Basin provides an important complement to backgroundand transient data obtained within and seaward of the mega-splay system. This monitoring network will provide avital context for observations within the plate boundary fault system.

603D-Full2
Scientific Objectives: (250 words or less)Coring, logging, and conventional downhole measurements will commence at four reference sites during Phase I and
II of the Nankai Trough Seismogenic Zone Experiment. This proposal describes scientific objectives for long-termborehole observatories to be installed at four of these sites and one additional site. The fundamental objectives of the
proposed observatory science are to map background properties of the incoming sediment and crust and to monitor
temporal changes associated with the seismic cycle. Specific objectives include:(1) Monitor the differences in hydrologic properties and fluid-flow signals where basement highs are subducting
versus where basement plains are subducting.
(2) Determine if, where, and why compartments of excess pore pressure develop seaward of the deformation front; if
present, determine their effect on early-subduction fault dynamics.
(3) Compare hydrologic properties and fluid-flow signals in turbidite sand bodies before and after they have passed
beneath the toe of the accretionary prism Assess the role of these turbidite sand bodies in drainage of deeper
sediments, and impacts of drainage on plate boundary strength.
(4) Monitor hydrologic properties and fluid-flow signals within the frontal décollement zone for rigorous comparison
against properties and flow in subducted sand lenses beneath the décollement.
(5) Determine how basement fluid flow influences margin-scale patterns of heat flow and fluid flow.
(6) Monitor micro-seismicity, strain, and fluid flow response to tectonic events.

Please describe below any non-standard measurements technology needed to achieve the proposed scientific objectives.

Proposed Sites:
Site Name

Position

Water
Depth
(m)

Penetration (m)
Sed

Bsm

Total

NT1-01A

Lat: 32° 44.8878’N
Long: 136° 55.0236’E

3540

460m

40m

500m

NT1-02A

Lat: 32° 47.4996’N
Long: 137° 09.2784’ E

4210

730m

40m

770m

NT1-03A

Lat: 33° 01.23258’N
Long: 136° 47.9485’E

4125

1200m

0m

1200m

NT1-05A

Lat: 33° 01.3482’N
Long: 137° 3.3432’E

4310

1528m

40m

1568m

NT1-06A

Lat: 32° 51.35’N
Long: 137° 17.58’E

4200

990m

40m

1030m

NT2-04A

Lat: 33° 23.4’N,
Long: 136° 34.6’E

1990

1400m
forearcbasin

40m
acoustic
basement

1440m

Brief Site-specific Objectives
One CORK hole with screened
interval in position equivalent toturbidites and sealed basement.
Companion CORK hole with fully
cased sediment & open basement.
One CORK hole with screened
interval in turbidites and sealed
basement. Companion CORK holewith fully cased sediment and open
basement.
CORK monitoring of décollement andturbidites; will not extend tobasement. Monitor micro-seismicity
and strain.
One CORK hole with screened
intervals in turbidites and sealed
basement. Companion CORK holewith fully cased sediment and open
basement.
Alternate to NT1-02A. One CORK
hole with screened interval inturbidites and sealed basement.
Companion CORK hole with fully
cased sediment and open basement.
One CORK hole with screened
intervals in sediments. Monitor
micro-seismicity and strain.

603D-Full2

IODP Site Summary Forms:
Form 1 - General Site Information
Please fill out information in all gray boxes

Revised

New

Revised 7 March 2002

Section A: Proposal Information

Title of Proposal:

Date Form
Submitted:

The Nankai Trough Seismogenic Zone Experiment:
Observatory Science at the Reference Sites
Sept. 30, 2004

One CORK hole with screened interval in turbidites and sealed basement. Companion
CORK hole with fully cased sediment and open basement. Reference site to characterize
Site Specifichydrology of Shikoku Basin strata and upper igneous crust where a bathymetric mound is
Objectives with
underlain by a basement high. Objectives are to show how stratigraphy, basement
Priority
topography, and thermal structure affect the physical and hydrologic properties of(Must include generalsubduction inputs.
objectives in proposal)

List Previous
Drilling in Area:

This site would be a return to NT1-01A, which is proposed to be drilled in
603A-Full2 (NantroSEIZE Reference Sites).

Section B: General Site Information
If site is a reoccupation
NT1-01A
Site Name:(e.g. SWPAC-01A)of an old DSDP/ODP
Site, Please include
former Site #Nankai Trough off Kii
Area or Location:

Latitude: Deg: 32 N

Min: :44.8878

Jurisdiction:

Longitude: Deg: 136 E

Min: 55.0236

Distance to Land:

Coordinates
System:WGS 84,

Priority of Site: Primary:x

Other (Alt:

Japan
130 km to Cape Shiono-Misaki)

Water Depth:

3540 mSection C: Operational Information
Sediments
Proposed
Penetration:(m)

Basement

460

40

What is the total sed. thickness? 460m
Total Penetration: 500

General Lithologies:

Coring Plan:(Specify or check)

Possible silt/mud turbidites and ash layers
Hemipelagic mud and mudstonem

BasaltLimited coring as necessary to confirm screen locations for CORKs
1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

LWD

Neutron-Porosity

Borehole Televiewer

Formation Fluid Sampling

Density-Neutron

Litho-Density

Nuclear Magnetic
Resonance

Borehole Temperature& Pressure

Resistivity-Gamma Ray

Gamma Ray

Geochemical

Borehole Seismic

Acoustic

Limited measurements if needed toSide-Wall Core
Sampling

Resistivity

fill gaps from previous (Phase I)
drilling.

Acoustic
Formation Image

Others (Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:(Riser Holes Only)

Cuttings Sampling Intervals)

Others (

)

°C

from

m

to

m,

m intervals

from

m

to

m,

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Hazards/
Weather:

Drilling/Coring: 5

Logging: 12 (install casing/CORKs) Total On-Site: 17Longterm Borehole Observation Plan/Re-entry PlanLong term monitoring (CORKs) of basement and overlying sediments.
Please check following List of Potential Hazards
Shallow Gas

Complicated Seabed Condition

Hydrothermal Activity

Hydrocarbon

Soft SeabedLandslide and Turbidity Current

Shallow Water Flow

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H 2S

High Dip Angle

Ice Conditions

CO2

What is your Weather
window? (Preferable
period with the reasons)April-July:
Avoid typhoonseasonForm 2 - Site Survey Detail

IODP Site Summary Forms:
Please fill out information in all gray boxes

Proposal #: 603D-Full

Data Type

1

New

Site #: NT1-01A
SSP
Requirements

ExistsIn DB

NoHigh resolution
seismic reflection

Date Form Submitted: Sept. 30, 2004

Details of available data and data that are still to be collected
Primary Line(s):Location of Site on line (SP or Time only)

Crossing Lines(s):Yes

2RevisedDeep Penetration
seismic reflection

Primary Line(s): KR9806-2 SP2710

Location of Site on line (SP or Time only)

Crossing Lines(s): KR0211-S0

3

Seismic Velocity†Yes

4

Seismic Grid

Yes

Refraction

Yes

Two ship COP (maximum offset 20 km) obtained by JAMSTEC.

Yes

OBS data by Nakanishi et al. (1997)

5a

Stacking velocity and migration velocity from MCS lines. OBS data.

(surface)

5b

Refraction(near bottom)

Location of Site on line (Time)6

3.5 kHz

7

No

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

11a

Magnetics

Yes

Compiled map published from AIST, Japan.

11b

GravityYesCompiled map published from AIST, Japan.

12
13
14a
14b
15

No
No

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

SSP Classification of Site:
SSP Comments:

Yes

Multi-narrow-beam data by JAMSTEC R/V Yokusuka.

No

No
Yes.

Available on JODC web page (http://www.jodc.go.jp)
Yes
Yes

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging Plan

IODP Site Summary Forms:
New

Proposal #: 603D-Full
Water Depth (m): 3540

Site #: NT1-01A
Sed. Penetration (m): 460

RevisedDate Form Submitted: Sept. 30, 2004
Basement Penetration (m): 40

Do you need to use the conical side-entry sub (CSES) at this site? Yes

No

Are high temperatures expected at this site?

Yes

No

Are there any other special requirements for logging at this site?

Yes

No

If “Yes” Please describe requirements:No logging planned. Site will have been logged in previous phase.
CORK installation only
What do you estimate the total logging time for this site to be: 12 days install casing/CORKS
Relevance
Measurement Type
Neutron-Porosity

Scientific Objective(1=high, 3=Low)

Litho-Density
Natural Gamma Ray
Resistivity-Induction
Acoustic
FMS
BHTV
Resistivity-Laterolog
Magnetic/Susceptibility
Density-Neutron (LWD)
Resitivity-Gamma

Ray

(LWD)
Other: Special tools (CORK,
PACKER, VSP, PCS, FWS,

CORK

WSP

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

Form 4 – Pollution & Safety Hazard Summary

IODP Site Summary Forms:
New

Please fill out information in all gray boxes

Proposal #: 603D-Full1

3

4

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information,
list all commercial drilling inthis area that produced or
yielded significant hydrocarbon
shows. Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?

RCB with limited coring to confirm monitoring intervals for CORK. CORK installation

None

None

No

5

Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.

6

What “special” precautions will
be taken during drilling?

None

What abandonment procedures
do you plan to follow:

None. Holes will be CORKed.

7
8

Please list other natural ormanmade hazards which may
effect ship’s operations:

No

Strong Kuroshio current. Typhoon season (June to Oct)(e.g. ice, currents, cables)

9

Date Form Submitted: Sept. 30, 2004

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT1-01A

Revised

Summary: What do you
consider the major risks indrilling at this site?

Current

Form 5 – Lithologic Summary

IODP Site Summary Forms:

New

Revised
New

Proposal #: 603D-Full
Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

Site #: NT1-01A

Ageseafloor
460

Unconformity

560

Total depth

20 Ma

Date Form Submitted: Sept. 30, 2004

Assumedvelocity(km/sec)

Lithology

Paleo-environment

1.6-1.9

Hemipelagite

Backarc basin
Floor

2.0

Volcanic
sediment andbasement basalt

Backarc basin
spreading ridge

Avg. rateof sed.
accum.
(m/My)
23 m/myComments

603D-Full2

IODP Site Summary Forms:
Form 1 - General Site Information
Please fill out information in all gray boxes

Revised

New

Revised 7 March 2002

Section A: Proposal Information

Title of Proposal:

Date Form
Submitted:

The Nankai Trough Seismogenic Zone Experiment:
Observatory Science at the Reference Sites
Sept. 30, 2004

One CORK hole with screened interval in turbidites and sealed basement.
Companion CORK hole with fully cased sediment and open basement. Reference
Site SpecificObjectives with site to characterize hydrology of Shikoku Basin strata and upper igneous crust
Priority where basement topography is relatively flat. Objectives are to document how(Must include general stratigraphy, basement topography, and thermal structure affect the physical andobjectives in proposal) hydrologic properties of subduction inputs.

List Previous
Drilling in Area:

This site would be a return to NT1-02A, which is proposed to be drilled in
603A-Full2 (NantroSEIZE Reference Sites).

Section B: General Site Information
If site is a reoccupation
NT1-02A
Site Name:(e.g. SWPAC-01A)of an old DSDP/ODP
Site, Please include
former Site #Latitude: Deg: 32 N

Min: :47.4996

Longitude: Deg: 137 E

Min: 9.2784

Coordinates
System:WGS 84,

Priority of Site: Primary:x

Other (
Alt:

Nankai Trough off Kii
Area or Location:

Jurisdiction:
Distance to Land:Japan
145 km to Cape Shiono-Misaki)

Water Depth:

4210 mSection C: Operational Information
Sediments
Proposed
Penetration:(m)

Basement

730

40

What is the total sed. thickness? 730

m
Total Penetration: 770

General Lithologies:

Coring Plan:(Specify or check)

Possible silt/mud turbidites and ash layers
Hemipelagic mud and mudstonem

BasaltLimited coring as necessary to confirm screen locations for CORKs
1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

LWD

Neutron-Porosity

Borehole Televiewer

Formation Fluid Sampling

Density-Neutron

Litho-Density

Nuclear Magnetic
Resonance

Borehole Temperature& Pressure

Resistivity-Gamma Ray

Gamma Ray

Geochemical

Borehole Seismic

Acoustic

Limited measurements if needed toSide-Wall Core
Sampling

Resistivity

fill gaps from previous (Phase I)
drilling.

Acoustic
Formation Image

Others (Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:(Riser Holes Only)

Cuttings Sampling Intervals)

Others (

)

°C

from

m

to

m,

m intervals

from

m

to

m,

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Hazards/
Weather:

Drilling/Coring: 6 days

Logging: 12 (install casing/CORKs) Total On-Site: 18 days

Longterm Borehole Observation Plan/Re-entry PlanLong term monitoring (CORKs) of basement and overlying sediments.
Please check following List of Potential Hazards
Shallow Gas

Complicated Seabed Condition

Hydrothermal Activity

Hydrocarbon

Soft SeabedLandslide and Turbidity Current

Shallow Water Flow

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H 2S

High Dip Angle

Ice Conditions

CO2

What is your Weather
window? (Preferable
period with the reasons)April-July:
Avoid typhoonseasonForm 2 - Site Survey Detail

IODP Site Summary Forms:
Please fill out information in all gray boxes

Proposal #: 603D-Full

Data Type

1

New

Site #: NT1-02A
SSP
Requirements

ExistsIn DB

NoHigh resolution
seismic reflection

Date Form Submitted: Sept. 30, 2004

Details of available data and data that are still to be collected
Primary Line(s):Location of Site on line (SP or Time only)

Crossing Lines(s):Yes

2RevisedDeep Penetration
seismic reflection

Primary Line(s): KR9806-1 SP1740

Location of Site on line (SP or Time only)

Crossing Lines(s): KR0211-S0 nearby

3

Seismic Velocity†Yes

4

Seismic Grid

Yes

Refraction

Yes

Two ship COP (maximum offset 20 km) obtained by JAMSTEC.

Yes

OBS data by Nakanishi et al. (1997)

5a

Stacking velocity and migration velocity from MCS lines. OBS data.

(surface)

5b

Refraction(near bottom)

Location of Site on line (Time)6

3.5 kHz

7

No

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

11a

Magnetics

Yes

Compiled map published from AIST, Japan.

11b

GravityYesCompiled map published from AIST, Japan.

12
13
14a
14b
15

No
No

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

SSP Classification of Site:
SSP Comments:

Yes

Multi-narrow-beam data by JAMSTEC R/V Yokusuka.

No

No
Yes.

Available on JODC web page (http://www.jodc.go.jp)
Yes
Yes

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging Plan

IODP Site Summary Forms:
New

Proposal #: 603D-Full
Water Depth (m): 4210

Site #: NT1-02A
Sed. Penetration (m): 730

RevisedDate Form Submitted: Sept. 30, 2004
Basement Penetration (m): 40

Do you need to use the conical side-entry sub (CSES) at this site? Yes

No

Are high temperatures expected at this site?

Yes

No

Are there any other special requirements for logging at this site?

Yes

No

If “Yes” Please describe requirements:No logging planned. Site will have been logged in previous phase.
CORK installation only
What do you estimate the total logging time for this site to be: 12 days (CORK/casing install)
Relevance
Measurement Type
Neutron-Porosity

Scientific Objective(1=high, 3=Low)

Litho-Density
Natural Gamma Ray
Resistivity-Induction
Acoustic
FMS
BHTV
Resistivity-Laterolog
Magnetic/Susceptibility
Density-Neutron (LWD)
Resitivity-Gamma

Ray

(LWD)
Other: Special tools (CORK,
PACKER, VSP, PCS, FWS,

CORK

WSP

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

Form 4 – Pollution & Safety Hazard Summary

IODP Site Summary Forms:
New

Please fill out information in all gray boxes

Proposal #: 603D-Full1

3

4

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information,
list all commercial drilling inthis area that produced or
yielded significant hydrocarbon
shows. Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?

5

Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.

6

What “special” precautions will
be taken during drilling?

78

What abandonment procedures
do you plan to follow:
Please list other natural ormanmade hazards which may
effect ship’s operations:

RCB with limited coring to confirm monitoring intervals for CORK. CORK installation

None

None

No
No

May need casing of sandy turbidites prior to basement drilling/basement CORK
installation.
None. Holes will be CORKed.
Strong Kuroshio current. Typhoon season (June to Oct)(e.g. ice, currents, cables)

9

Date Form Submitted: Sept. 30, 2004

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT1-02A
NT1-01A

Revised

Summary: What do you
consider the major risks indrilling at this site?

Current

Form 5 – Lithologic Summary

IODP Site Summary Forms:

New

Revised
New

Proposal #: 603D-Full
Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

Site #: NT1-02A

Age

seafloor
730

830

Assumedvelocity(km/sec)
1.6-1.9

Unconformity

Total depth

20 Ma

Date Form Submitted: Sept. 30, 2004

Lithology

Paleo-environment

Hemipelagite
and turbidites

Backarc basin
Floor

Volcanic
sediment andbasement basalt

Backarc basin
spreading ridge

2.0

Avg. rateof sed.
accum.
(m/My)
36 m/myComments
Heterogeneous
stratigraphy withirregular packets ofturbidite sand.

603D-Full2

IODP Site Summary Forms:
Form 1 - General Site Information
Please fill out information in all gray boxes

Revised

New

Revised 7 March 2002

Section A: Proposal Information

Title of Proposal:

Date Form
Submitted:

The Nankai Trough Seismogenic Zone Experiment:
Observatory Science at the Reference Sites
Sept. 30, 2004

Reference site to characterize hydrology of decollement and underlying turbidites
at the toe of the accretionary prism and to monitor micro-seismicity and strain.
Site SpecificObjectives with Objectives are to install CORK to monitor hydrologic properties and fluid-flow
Priority signals within and below the frontal décollement zone.
(Must include generalobjectives in proposal)

List Previous
Drilling in Area:

This site would be a return to NT1-03A, which is proposed to be drilled in
603A-Full2 (NantroSEIZE Reference Sites).

Section B: General Site Information
If site is a reoccupation
NT1-03A
Site Name:(e.g. SWPAC-01A)of an old DSDP/ODP
Site, Please include
former Site #Nankai Trough off Kii
Area or Location:

Latitude: Deg: 33 N

Min: 1.23258

Jurisdiction:

Longitude: Deg: 136 E

Min: 47.94852

Distance to Land:

Coordinates
System:WGS 84,

Priority of Site: Primary:x

Other (Alt:

Japan
100 km to Cape Shiono-Misaki)

Water Depth:

4125 mSection C: Operational Information
Sediments
Proposed
Penetration:(m)

Basement

1200
What is the total sed. thickness? 1740m
Total Penetration: 1200

General Lithologies:

Coring Plan:(Specify or check)

Silt and sand turbidites, ash
hemipelagic mud and mudstonemlayers,Limited coring as necessary to confirm screen locations for CORKs
1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

LWD

Neutron-Porosity

Borehole Televiewer

Formation Fluid Sampling

Density-Neutron

Litho-Density

Nuclear Magnetic
Resonance

Borehole Temperature& Pressure

Resistivity-Gamma Ray

Gamma Ray

Geochemical

Borehole Seismic

Acoustic

Limited measurements if needed toSide-Wall Core
Sampling

Resistivity

fill gaps from previous (Phase I)
drilling.

Acoustic
Formation Image

Others (Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:(Riser Holes Only)

Cuttings Sampling Intervals)

Others (

)

°C

from

m

to

m,

m intervals

from

m

to

m,

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Hazards/
Weather:

Drilling/Coring: 6 days

Logging:12 (install casing/CORKs)

Total On-Site: 18 days

Longterm Borehole Observation Plan/Re-entry PlanLong term monitoring (CORKs) of turbidites and decollement.
Please check following List of Potential Hazards
Shallow Gas

Complicated Seabed Condition

Hydrothermal Activity

Hydrocarbon

Soft SeabedLandslide and Turbidity Current

Shallow Water Flow

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H 2S

High Dip Angle

Ice Conditions

CO2

What is your Weather
window? (Preferable
period with the reasons)April-July:
Avoid typhoonseasonForm 2 - Site Survey Detail

IODP Site Summary Forms:
Please fill out information in all gray boxes

Proposal #: 603D-Full

Data Type

1

New

Site #: NT1-03A
SSP
Requirements

ExistsIn DB

NoHigh resolution
seismic reflection

Date Form Submitted: Sept. 30, 2004

Details of available data and data that are still to be collected
Primary Line(s):Location of Site on line (SP or Time only)

Crossing Lines(s):Yes

2RevisedDeep Penetration
seismic reflection

Primary Line(s): KR0108-4 SP16550

Location of Site on line (SP or Time only)

Crossing Lines(s):3Seismic Velocity†Yes

4

Seismic Grid

Yes

Refraction

Yes

Two ship COP (maximum offset 20 km) obtained by JAMSTEC.

Yes

OBS data by Nakanishi et al. (1997)

5a

Stacking velocity and migration velocity from MCS lines. OBS data.

(surface)

5b

Refraction(near bottom)

Location of Site on line (Time)6

3.5 kHz

7

No

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

11a

Magnetics

Yes

Compiled map published from AIST, Japan.

11b

GravityYesCompiled map published from AIST, Japan.

12
13
14a
14b
15

No
No

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

SSP Classification of Site:
SSP Comments:

Yes

Multi-narrow-beam data by JAMSTEC R/V Yokusuka.

No

No
Yes.

Available on JODC web page (http://www.jodc.go.jp)
Yes
Yes

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging Plan

IODP Site Summary Forms:
New

Proposal #: 603D-Full
Water Depth (m): 4125

Site #: NT1-03A
Sed. Penetration (m): 1200

RevisedDate Form Submitted: Sept. 30, 2004
Basement Penetration (m): 0

Do you need to use the conical side-entry sub (CSES) at this site? Yes

No

Are high temperatures expected at this site?

Yes

No

Are there any other special requirements for logging at this site?

Yes

No

If “Yes” Please describe requirements:No logging planned. Site will have been logged in previous phase.
CORK installation only
What do you estimate the total logging time for this site to be: 12 days (CORK/casing install)
Relevance
Measurement Type
Neutron-Porosity

Scientific Objective(1=high, 3=Low)

Litho-Density
Natural Gamma Ray
Resistivity-Induction
Acoustic
FMS
BHTV
Resistivity-Laterolog
Magnetic/Susceptibility
Density-Neutron (LWD)
Resitivity-Gamma

Ray

(LWD)
Other: Special tools (CORK,
PACKER, VSP, PCS, FWS,

CORK

WSP

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

Form 4 – Pollution & Safety Hazard Summary

IODP Site Summary Forms:
New

Please fill out information in all gray boxes

Proposal #: 603D-Full
1

3

4

Date Form Submitted: Sept. 30, 2004

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT1-03A

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information,
list all commercial drilling inthis area that produced or
yielded significant hydrocarbon
shows. Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?

RCB with limited coring to confirm monitoring intervals for CORK. CORK installation

None

None

No

5

Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.

6

What “special” precautions will
be taken during drilling?

May need shallow casing to to stabilize sandy turbidites.

What abandonment procedures
do you plan to follow:

None. Holes will be CORKed.

7
8

Please list other natural ormanmade hazards which may
effect ship’s operations:

No

Strong Kuroshio current. Typhoon season (June to Oct)(e.g. ice, currents, cables)

9

Revised

Summary: What do you
consider the major risks indrilling at this site?

Current, instability of accreted trench turbidites.

Form 5 – Lithologic Summary

IODP Site Summary Forms:

New

Revised
New

Proposal #: 603D-Full
Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

Site #: NT1-03A

Age

Assumedvelocity(km/sec)

seafloor

Date Form Submitted: Sept. 30, 2004

Lithology

Paleo-environment

1.5

Hemipelagite +volcanic ash

Upper Shikoku
Basin
Trench wedge

230

Fault

Quaternary

1.6-1.8

turbidites

790

Reflector

Pleistocene

1.9

hemipelagite
and volcanic
ash

Upper
Basin

Shikoku

1000

Reflector

PlioMioce
nehemipelagite +turbidite

Lowe
Basin

Shikoku

1200

Total depth

2.4

Avg. rateof sed.
accum.
(m/My)

Comments

Probably contains
thick layers ofunconsolidated sands.

Heterogeneous
stratigraphy withirregular packets ofsand or sandstone

603D-Full2

IODP Site Summary Forms:
Form 1 - General Site Information
Please fill out information in all gray boxes

Revised

New

Revised 7 March 2002

Section A: Proposal Information

Title of Proposal:

Date Form
Submitted:

The Nankai Trough Seismogenic Zone Experiment:
Observatory Science at the Reference Sites
Sept. 30, 2004

One CORK hole with screened interval in turbidites and sealed basement.
Companion CORK hole with fully cased sediment and open basement. Objectives
Site SpecificObjectives with are to document variations in turbidite and basement fluid flow between NT1-02A
Priority and deformation front.
(Must include generalobjectives in proposal)

List Previous
Drilling in Area:

No scientific drilling in immediate vicinity. DSDP 87, ODP 131, 190, and 196
were conducted about 200 km SW of this proposal’s sites.

Section B: General Site Information
NT1-05A
If site is a reoccupation
NT1-04B
Site Name:(e.g. SWPAC-01A)of an old DSDP/ODP
Site, Please include
former Site #Nankai Trough off Kii
Area or Location:

Latitude: Deg: 33 N

Min: 01.3482

Jurisdiction:

Longitude: Deg: 137 E

Min: 3.3432

Distance to Land:

Coordinates
System:WGS 84,

Priority of Site: Primary:

Other (
Alt:x

Japan
120 km to Cape Shiono-Misaki)

Water Depth:

4310 mSection C: Operational Information
Sediments
Proposed
Penetration:(m)

Basement

1528

40

What is the total sed. thickness? 1528m
Total Penetration: 1568

General Lithologies:

Coring Plan:(Specify or check)

Possible silt/mud turbidites and ash layers
Hemipelagic mud and mudstonem

Basalt

APC/XCB to refusal, RCB to TD.
1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

LWD

Neutron-Porosity

Borehole Televiewer

Formation Fluid Sampling

Density-Neutron

Litho-Density

Nuclear Magnetic
Resonance

Borehole Temperature& Pressure

Resistivity-Gamma Ray

Gamma Ray

Geochemical

Borehole Seismic

Acoustic

Side-Wall Core

Resistivity

Sampling

Acoustic
Formation Image

Others (Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:(Riser Holes Only)

Cuttings Sampling Intervals)

Others (

)

°C

from

m

to

m,

m intervals

from

m

to

m,

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Hazards/
Weather:

Logging: 7 logging,
12 CORK/casing
Longterm Borehole Observation Plan/Re-entry Plan
Drilling/Coring: 18 days

Total On-Site: 37 days

Long term monitoring (CORKs) of basement and overlying sediments.
Please check following List of Potential Hazards
Shallow Gas

Complicated Seabed Condition

Hydrothermal Activity

Hydrocarbon

Soft SeabedLandslide and Turbidity Current

Shallow Water Flow

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H 2S

High Dip Angle

Ice Conditions

CO2

What is your Weather
window? (Preferable
period with the reasons)April-July:
Avoid typhoonseasonForm 2 - Site Survey Detail

IODP Site Summary Forms:
Please fill out information in all gray boxes

Proposal #: 603D-Full

Data Type1New

NT1-05A
Site #: NT1-04A
SSP
Requirements

ExistsIn DB

NoHigh resolution
seismic reflection

Date Form Submitted: Sept. 30, 2004

Details of available data and data that are still to be collected
Primary Line(s):Location of Site on line (SP or Time only)

Crossing Lines(s):Yes

2RevisedDeep Penetration
seismic reflection

Primary Line(s): KR9806-1 SP2922

Location of Site on line (SP or Time only)

Crossing Lines(s): KY0314-100 SP 3558

3

Seismic Velocity†Yes

4

Seismic Grid

Yes

Refraction

Yes

Two ship COP (maximum offset 20 km) obtained by JAMSTEC.

Yes

OBS data by Nakanishi et al. (1997)

5a

Stacking velocity and migration velocity from MCS lines. OBS data.

(surface)

5b

Refraction(near bottom)

Location of Site on line (Time)6

3.5 kHz

7

No

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

11a

Magnetics

Yes

Compiled map published from AIST, Japan.

11b

GravityYesCompiled map published from AIST, Japan.

12
13
14a
14b
15

No
No

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

SSP Classification of Site:
SSP Comments:

Yes

Multi-narrow-beam data by JAMSTEC R/V Yokusuka.

No

No
Yes.

Available on JODC web page (http://www.jodc.go.jp)
Yes
Yes

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging Plan

IODP Site Summary Forms:
New

Proposal #: 603D-Full
Water Depth (m): 4310

NT1-05A
Site #: NT1-04B
Sed. Penetration (m): 1528

RevisedDate Form Submitted: Sept. 30, 2004
Basement Penetration (m): 40

Do you need to use the conical side-entry sub (CSES) at this site? Yes

No

Are high temperatures expected at this site?

Yes

No

Are there any other special requirements for logging at this site?

Yes

No

If “Yes” Please describe requirements:
What do you estimate the total logging time for this site to be: 7 days logging, 12 days CORK/casing install
Relevance
Measurement Type
Neutron-Porosity

Scientific Objective
Estimation of water content in sedimentary sequences and basement.

Litho-Density

Estimation of water content, bulk density, and mineral composition in
sedimentary sequences and basement.

1

Natural Gamma Ray

Estimation of clay contents and mineral composition in sedimentary
sequences and basement.

1

Resistivity-Induction

Estimation of water content and electromagnetic properties in sedimentary
sequence and basement.

1

Acoustic

Determination of in situ velocity and estimation of physical properties.
Comparsion with seismic velocity and create synthetic seismograms.

1

FMS

Imaging of sedimentary structures and fractures. Core-log correlation of
structural features.

2

Density-Neutron (LWD)

Estimation of water contents, bulk density and lithology in unstableborehole environments.

1

Resitivity-Gamma(LWD)

Estimation of water contents, electro-magnetic properties, and lithology inunstable borehole environment.

1(1=high, 3=Low)

1

BHTV
Resistivity-Laterolog
Magnetic/Susceptibility

Ray

Other: Special tools (CORK,
PACKER, VSP, PCS, FWS,
WSP

1Packer: hydrologic tests of sediment + basement
VSP: core-log-seismic integration
CORK: monitoring of sediment P, T, chem

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

Form 4 – Pollution & Safety Hazard Summary

IODP Site Summary Forms:
New

Please fill out information in all gray boxes

Proposal #: 603D-Full1

3

4

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information,
list all commercial drilling inthis area that produced or
yielded significant hydrocarbon
shows. Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?

5

Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.

6

What “special” precautions will
be taken during drilling?

78

What abandonment procedures
do you plan to follow:
Please list other natural ormanmade hazards which may
effect ship’s operations:

APC to refusal, XCB to refusal. RCB to TD, log. CORK installation.

None

None

No
No

May need casing of sandy turbidites prior to basement drilling/basement CORK
installation.
None. Holes will be CORKed.
Strong Kuroshio current. Typhoon season (June to Oct)(e.g. ice, currents, cables)

9

Date Form Submitted: Sept. 30, 2004

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT1-05A
NT1-04B

Revised

Summary: What do you
consider the major risks indrilling at this site?

Current

Form 5 – Lithologic Summary

IODP Site Summary Forms:

New

Revised
New

Proposal #: 603D-Full
Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

Site #: NT1-05A
NT1-04A

Age

seafloor

Assumedvelocity(km/sec)
1.55-2.37

1528

Unconformity

1568

Total depth~20
Ma

Date Form Submitted: Sept. 30, 2004

Lithology

Paleo-environment

Hemipelagite
and turbidites

Backarc basin
Floor

Volcanic
sediment andbasement basalt

Backarc basin
spreading ridge

Avg. rateof sed.
accum.
(m/My)

Comments
Heterogeneous
stratigraphy withirregular packets ofturbidite sand.

1

iSAS/IODP Site Summary Forms:

603D-Full2

Form 1 - General Site Information
Please fill out information in all gray boxes

New

Revised 7 March 2002

RevisedSection A: Proposal Information
Title of Proposal:

NanTroSEIZE Reference Sites:
Sampling and Measuring Inputs to the Seismogenic Zone

Date Form 3/31/05
Submitted:

One CORK hole with screened interval in turbidites and sealed basement.
Companion CORK hole with fully cased sediment and open basement. Reference
Site SpecificObjectives with site to characterize hydrology of Shikoku Basin strata and upper igneous crust
Priority where basement topography is relatively flat. Objectives are to document how(Must include general stratigraphy, basement topography, and thermal structure affect the physical andobjectives in proposal) hydrologic properties of subduction inputs.

List Previous
Drilling in Area:

This site would be a return to NT1-06A, proposed as an alternate to NT1-02A
from proposal 603A-Full2 (NantroSEIZE Reference Sites).

Section B: General Site Information
Site Name:(e.g. SWPAC-01A)

If site is a reoccupationof an old DSDP/ODP
Site, Please include
former Site #NT01-06A

Area or Location:

Latitude: Deg: 32 N

Min: 51.35

Jurisdiction:

Longitude: Deg: 137 E

Min: 17.58

Distance to Land:

Coordinates
System:WGS 84,

Priority of Site: Primary:

Other (

Nankai Trough off Kii

Japan
145 km to Cape Shiono-Misaki)

Alt: X

Water Depth:

4200 m2
Section C: Operational Information
Sediments
Proposed
Penetration:(m)

Basement

990 m

40 m

What is the total sed. thickness? 990

m
Total Penetration: 1030

General Lithologies:

Coring Plan:(Specify or check)

Silt and sand turbidites, ash layers,
hemipelagic mud and mudstonem

BasaltLimited coring as necessary to confirm screen locations for CORKs
1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

LWD

Neutron-Porosity

Borehole Televiewer

Formation Fluid Sampling

Density-Neutron

Litho-Density

Nuclear Magnetic
Resonance

Borehole Temperature& Pressure

Resistivity-Gamma Ray

Gamma Ray

Geochemical

Borehole Seismic

Acoustic

Resistivity

Limited measurements if needed toSide-Wall Core
Sampling

fill gaps from previous (Phase I)
drilling.

Acoustic
Formation Image

Max.Borehole
Temp. :
Mud Logging:(Riser Holes Only)

Others ()

Others ()

Expected value (For Riser°C
Drilling)
Cuttings Sampling Intervals
from

m

to

m,

m intervals

from

m

to

m,

m intervals

Basic Sampling Intervals: 5m
Estimated days:
Future Plan:

Hazards/
Weather:

Drilling/Coring: 7 days

Logging: 12 days (casing/CORK)

Total On-Site: 19 days

Longterm Borehole Observation Plan/Re-entry Plan
CORK observatory
Please check following List of Potential Hazards
Shallow Gas

Complicated Seabed Condition

Hydrothermal Activity

Hydrocarbon

Soft SeabedLandslide and Turbidity Current

Shallow Water Flow

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H2S

High Dip Angle

Ice Conditions

CO2

What is your Weather
window? (Preferable
period with the reasons)April-July :avoid typhoonseason3Form 2 - Site Survey Detail

iSAS/IODP Site Summary Forms:
9.27849.2784
Please fill out information in all gray boxes

Proposal #: 603A-Full

Data TypeSSP
Requirements

ExistsIn DB

High resolution
seismic reflection

Yes

Deep Penetration
seismic reflection

Yes

3

Seismic Velocity†

Yes

4
5a

Seismic Grid
Refraction

Yes
Yes

Details of available data and data that are still to be collected:Location of Site on line (SP or Time only)

odkm03-103-1 SP2860
Crossing Lines(s): odkm03-ACA SP2175
Primary Line(s):2Location of Site on line (SP or Time only)

KR9806-1 nearby
Crossing Lines(s):(surface)

Refraction

RevisedDate Form Submitted: 11/05/04

Primary Line(s)

1

5b

New

Site #: NT01-06A

Yes

KR0211-S0 nearby
Stacking velocity and migration velocity from MCS lines. OBS data

Two ship COP (maximum offset 20 km) obtained by JAMSTEC at the endof September, 2002.
OBS data by Nakanishi et al. (1997)(near bottom)
Location of Site on line (Time)6

3.5 kHz

No

7

Yes

10
11a

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow
Magnetics

Yes
Yes

Compiled map published from AIST, Japan

11b

GravityYesCompiled map published from AIST, Japan

12
13
14a
14b
15

No
No

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

Multi-narrow-beam data by JAMSTEC R/V Yokosuka

No
No
No

Available on JODC web page (http://www.jodc.go.jp)
Yes
Yes

4
Form 3 - Detailed Logging PlaniSAS/IODP Site Summary Forms:
New
Proposal #: 603D-Full2
Water Depth (m): 4200

Site #: NT01-06A
Sed. Penetration (m): 990

RevisedDate Form Submitted: 3/31/05
Basement Penetration (m): 40

Do you need to use the conical side-entry sub (CSES) at this site? Yes
No
Are high temperatures expected at this site?
Yes
No
Are there any other special requirements for logging at this site? Yes
No
If “Yes” Please describe requirements: No logging planned. Site will have been logged in previous phase.
What do you estimate the total logging time for this site to be:

12 days casing CORK install
Relevance

Measurement Type

Other: Special tools (CORK,
PACKER, VSP, PCS, FWS,
WSP

Scientific Objective

CORK(1=high, 3=Low)5iSAS/IODP Site Summary Forms:

Form 4 – Pollution & Safety Hazard Summary

Please fill out information in all gray boxes

New

Proposal #: 603D-Full2
1

3

4
5

6

7
8

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information,
list all commercial drilling inthis area that produced or
yielded significant hydrocarbon
shows. Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?
Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.
What “special” precautions will
be taken during drilling?
What abandonment procedures
do you plan to follow:
Please list other natural ormanmade hazards which may
effect ship’s operations:

RCB with limited coring to confirm monitoring intervals for CORK. CORK
installation
None

None

No
No

Standard monitoring of C 1 to Cn; shallow casing may be needed to stabilize shallow
sandy turbidite layers.
None. Will be CORKed.
Strong Kuroshio current, typhoon (June to Oct.)(e.g. ice, currents, cables)

9

Date Form Submitted: 3/31/05

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT01-06A

Revised

Summary: What do you
consider the major risks indrilling at this site?

Kuroshio Current

6Form 5 – Lithologic Summary

iSAS/IODP Site Summary Forms:
Proposal #: 603D-Full2
Subbottom
depth (m)990

Key reflectors,
Unconformities,
faults, etc

Site #: NT01-06A
Age

Assumedvelocity(km/sec)

Holoceneto lower
Miocene1.6-1.9

20 Ma

2.0

New

RevisedN

Date Form Submitted: 3/31/05
Lithology

Paleoenvironment

Hemipelagite +volcanic ash +turbidites

backarc basin
floor

unconformity
backarc basin
volcanic
sediment andbasement basalt

Avg. rateof sed.
accum.
(m/My)
36 m/My

Comments

Heterogeneous
stratigraphy withirregular packets ofturbidite sand

603D-Full2

IODP Site Summary Forms:
Form 1 - General Site Information
Please fill out information in all gray boxes

Revised

New

Revised 7 March 2002

Section A: Proposal Information

Title of Proposal:

Date Form
Submitted:

The Nankai Trough Seismogenic Zone Experiment:
Observatory Science at the Reference Sites
Sept. 30, 2004

CORK monitoring for material properties, strain, geochemistry seaward of deep
riser hole (NT3-01). Monitoring intervals in clay-rich horizon (for strain) and in
Site SpecificObjectives with sandy horizon (for diffusive signal). Target depths will be refined based on priorPriority drilling.
(Must include generalobjectives in proposal)

List Previous
Drilling in Area:

A which is proposed to be drilled inThis site would be a return to NT2-04B,
603B-Full2.

Section B: General Site Information
If site is a reoccupation
NT2-04A
Site Name:(e.g. SWPAC-01A)of an old DSDP/ODP
Site, Please include
former Site #Kumano Basin off Kii
Area or Location:

Latitude: Deg: 33 N

Min: 23.4
25.1

Jurisdiction:

Longitude: Deg: 136 E

Min: 34.6'
37.5

Distance to Land:

Coordinates
System:WGS 84,

Priority of Site: Primary:x

Other (Alt:

Japan
60 km to Cape Shiono-Misaki)

Water Depth:

19904125 mSection C: Operational Information
Sediments

Basement

Proposed 1400
1450
Penetration:(m) What is the total sed. thickness? 1400

40m
Total Penetration: 1440m

Forearc basin sediment unconformably
laying on acoustic basin of Tertiary acc.
Complex.
Coring Plan: Limited coring as necessary to confirm screen locations for CORKs

General Lithologies:(Specify or check)

1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

LWD

Neutron-Porosity

Borehole Televiewer

Formation Fluid Sampling

Density-Neutron

Litho-Density

Nuclear Magnetic
Resonance

Borehole Temperature& Pressure

Resistivity-Gamma Ray

Gamma Ray

Geochemical

Borehole Seismic

Acoustic

Resistivity

Side-Wall Core
Sampling

ill gaps from previous (Phase I)

Limited measurements if needed torilling.

Acoustic
Formation Image

Others (Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:(Riser Holes Only)

Cuttings Sampling Intervals)

Others (

)

°C

from

m

to

m,

m intervals

from

m

to

m,

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Hazards/
Weather:

Drilling/Coring: 4

Logging: 6 casing/CORK install

Total On-Site: 10 days

Longterm Borehole Observation Plan/Re-entry PlanLong term monitoring (CORKs).
Please check following List of Potential Hazards
Shallow Gas

Complicated Seabed Condition

Hydrothermal Activity

Hydrocarbon

Soft SeabedLandslide and Turbidity Current

Shallow Water Flow

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H 2S

High Dip Angle

Ice Conditions

CO2

What is your Weather
window? (Preferable
period with the reasons)April-July:
Avoid typhoonseasonForm 2 - Site Survey Detail

IODP Site Summary Forms:
Please fill out information in all gray boxes

Proposal #: 603D-Full

Data Type

1

New

Site #: NT2-04A
SSP
Requirements

ExistsIn DB

YesHigh resolution
seismic reflection

2

RevisedDate Form Submitted: Sept. 30, 2004

Details of available data and data that are still to be collected
Primary Line(s)JAMSTEC Line Il1 (Feb. 2003):Location of Site on line (SP or Time only)(Feb.2003)
2003)
Lin (Feb.
Crossing Lines(s): JAMSTEC LineYes
Deep Penetration
seismic reflection

Primary Line(s): KR0108-4

Location of Site on line (SP or Time only)

Crossing Lines(s):3Seismic Velocity†Yes

4

Seismic Grid

Yes

Refraction

Yes

Two ship COP (maximum offset 20 km) obtained by JAMSTEC.

Yes

OBS data by Nakanishi et al. (1997)

5a

Stacking velocity and migration velocity from MCS lines. OBS data.

(surface)

5b

Refraction(near bottom)

6

3.5 kHz

7

No

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

11a

Magnetics

Yes

Compiled map published from AIST, Japan.

11b

GravityYesCompiled map published from AIST, Japan.

12
13
14a
14b
15

Yes
No

Gravity and piston cores.

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

SSP Classification of Site:
SSP Comments:

Location of Site on line (Time)Yes

Multi-narrow-beam data by JAMSTEC R/V Yokusuka.

Yes

Some data collected using IZANAGI side scan sonar.

Yes

Taken by JAMSTEC submersibles.

Yes.

Available on JODC web page (http://www.jodc.go.jp)
Yes
Yes

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging Plan

IODP Site Summary Forms:
New

Proposal #: 603D-Full
Water Depth (m): 1990

Site #: NT2-04A
Sed. Penetration (m): 1400

RevisedDate Form Submitted: Sept. 30, 2004
Basement Penetration (m): 40

Do you need to use the conical side-entry sub (CSES) at this site? Yes

No

Are high temperatures expected at this site?

Yes

No

Are there any other special requirements for logging at this site?

Yes

No

If “Yes” Please describe requirements:No logging planned. Site will have been logged in previous phase.
CORK installation only
What do you estimate the total logging time for this site to be: 6 days (install casing/CORK)
Relevance
Measurement Type
Neutron-Porosity

Scientific Objective(1=high, 3=Low)

Litho-Density
Natural Gamma Ray
Resistivity-Induction
Acoustic
FMS
BHTV
Resistivity-Laterolog
Magnetic/Susceptibility
Density-Neutron (LWD)
Resitivity-Gamma

Ray

(LWD)
Other: Special tools (CORK,
PACKER, VSP, PCS, FWS,

CORK

WSP

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

Form 4 – Pollution & Safety Hazard Summary

IODP Site Summary Forms:
New

Please fill out information in all gray boxes

Proposal #: 603D-Full
1

3

4

Date Form Submitted: Sept. 30, 2004

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT2-04A

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information,
list all commercial drilling inthis area that produced or
yielded significant hydrocarbon
shows. Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?

RCB with limited coring to confirm monitoring intervals for CORK to 1450 m. CORK
installation

None

None

Yes, MCS profile shows BSR.

5

Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.

6

What “special” precautions will
be taken during drilling?

May need casing to to stabilize shallow sediments.

What abandonment procedures
do you plan to follow:

None. Holes will be CORKed.

7
8

Please list other natural ormanmade hazards which may
effect ship’s operations:

No

Strong Kuroshio current. Typhoon season (June to Oct)(e.g. ice, currents, cables)

9

Revised

Summary: What do you
consider the major risks indrilling at this site?

Current, instability of shallow sediments.

Form 5 – Lithologic Summary

IODP Site Summary Forms:

New

Revised
New

Proposal #: 603D-Full
Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

seafloor

Site #: NT2-04A

Age
Holocene to Latetertiary

1400

Unconformity

1450

Total depth

Assumedvelocity(km/sec)
1.5-2Date Form Submitted: Sept. 30, 2004

Lithology
Turbidites andhemipelagic
sediments

Paleo-environment
Forearc
sediments

basin

Avg. rateof sed.
accum.
(m/My)

Comments

Received 1-October-2003

IODP Proposal Cover Sheet
New

RevisedAddendum

Above For Official Use Only

Please fill out information in all gray boxes
Title:

603B-Full2

NanTroSEIZE Drilling and Observatory Phase 2
Mechanical and Hydrologic State of Mega-Splay Faults:
Implications for Seismogenic Faulting and Tsunami Generation

Proponent(s): Masataka Kinoshita, Kevin Brown, Demian Saffer, Pierre Henry, Fred Chester, Tadanori Goto,
Sean P. S. Gulick, Tetsuro Hirono, Hisao Ito, Aitaro Kato, Gaku Kimura, Achim Kopf, Gregory
Moore, J. Casey Moore, Yasuyuki Nakamura, Jin-Oh Park, Saneatsu Saito, Susan Schwartz,
Masanao Shinohara, Ralph Stephen, Harold Tobin, Kohtaro Ujiie, Urumu Tsunogai, and Makoto
YamanoKeywords: Seismogenic zone, splay fault, tsunamigenesis, fault mechanics,
SouthwesternArea:(5 or less) fluid flow
Japan margin

Contact Information:
Contact Person:
Department:
Organization:
AddressTel.:
E-mail:Masataka Kinoshita
Deep-sea Research Department
Japan Marine Science and Technology Center
2-15 Natsushima, Yokosuka 237-0061 JAPAN+81-46-867-9323
masa@jamstec.go.jp

Fax: +81-46-867-9315

Permission to post abstract on iSAS Web site:

Yes

No

Abstract: (400 words or less)
The principal goal of NanTroSEIZE is to understand the mechanics of seismogenesis and rupture
propagation along subduction plate boundary faults as stated in the accompanying CDP. At Nankai, large out-ofsequence-thrust faults (“mega-splays") that branch from the décollement are common, first order structuralelements of the margin and appear continuous for several 10's of km along strike. These faults offset recent slope
basin sediments, are characterized by seafloor scarps, and are commonly associated with active fluid venting. Off
the Kii peninsula, such a mega-splay lies within the 1944 Tonankai coseismic rupture area estimated from tsunami
and seismic waveform inversions; inversions cannot distinguish splay fault slip from décollement slip.
Accordingly, both the décollement zone and the splay fault system represent necessary primary fault targets toaddress seismogenic zone processes.
The goal of this proposal is to (1) characterize the magnitude and nature of strain accumulation and slip
along mega-splays off the Kii peninsula, and (2) sample and instrument the mega-splay fault system at a range of
P-T conditions from ~1-3.5 km bsf. Specifically, this proposal is aimed at testing 5 key hypotheses: (1) The megasplay is a significant locus of plate boundary slip, slips in seismogenic events, and is currently locked; (2) The
mega-splay is part of a weak plate boundary fault system and slips at low resolved shear stress; (3) Changes inphysical and chemical properties of the fault zone with increasing temperature and pressure cause slip along themega-splay to undergo a transition from aseismic to seismic slip; (4) The mega-splay is hydrologically connectedto the seismogenic décollement zone at great depths impacting its mechanical and chemical state, and (5) Physicalproperties, chemistry, and state of the fault zone change systematically during the interseismic period.
Proposed drilling includes (1) coring of 1 site in the Kumano Basin, focused on characterizing the tectonic
history of the plate above the mega-splay faults, and (2) intersection of the active mega-splay fault system at threedepths from ~1 to ~3.5 km bsf (down dip evolutionary studies). We propose installation of long-term borehole
monitoring instruments at several of the sites. These borehole observatories, along with surface arrays ofmeasurements, regional geodetic and seismic monitoring both on land and via offshore cabled observatories, will
provide critical data toward understanding the slip distribution, temporal nature, and controlling mechanisms ofseismogenic faulting along the plate boundary system.

603B-Full2
Scientific Objectives: (250 words or less)
To test the five principal hypotheses (above), 5 holes will be drilled utilizing a dense net work of 2D and 3D
seismic reflection data. Comprehensive programs of coring, logging and downhole measurements will target the insitu mega-splay and wall-rock structural architecture, fault properties, stress state, fluid pressure, and temperature.
Post-drilling laboratory studies will include the fluid chemistry, veining/diagenesis, mechanical properties, and fault
micro-fabric relationships. NT2 sites 1 through 3 will target the mega-splay fault at depths between ~ 1 and 3.5 km.
They will assess evolutionary changes in all the various parameters over a temperature range of 20°C through~100+ °C (Hypotheses 2 and 3). In addition, at NT2-01A and B sites (1km sites), closely-spaced, paired holes willallow extensive cross hole hydrologic and geophysical studies of the shallow fault-zone. Ultimately the 3.5 km site.
NT2-3, will also be used for similar cross hole studies during the Phase 3 program. These cross hole tests, together
with the fluid chemistry and vein studies, will constrain the down dip hydrologic connectivity of the fault system(Hypothesis 4). The NT2-04 site in the Kumano Basin, together with additional geological investigations along the
splays fault traces, will allow us to constrain the mega-splays faulting activity (Hypothesis 1). At a minimum, Sites
NT2-01A and NT2-03A will be instrumented for studies of the fault locking patterns (geodetic measurements), andlong-term interactions of pore pressure, temperature, tilt and strain, seism city, fluid chemistry, and electricalproperties during this interseismic period.

Please describe below any non-standard measurements technology needed to achieve the proposed scientific objectives.
LWD (RAB), DVTP-P, hydrofracturing test (wireline packer test), VSP.
Geodetic (strain/tilt), seismic and hydrologic (P,T) sensors and osmotic sampler are installed for a long-termborehole observatory at NT2-03A. Cross-well hydrologic (pumping / fluid injection test) and electrical propertiers
experimentsare planned at NT2-01A and B.

Proposed Sites:

NT2-01A
NT2-01B

33°13.0’N, 136°41.4’E

Water
Depth
(m)
2470

NT2-02A

33°14.0’N, 136°40.8’E

2080

2000

0

2000

NT2-03A

33°15.9’N, 136°39.5’E

2240

3500

0

3500

NT2-04A

33°23.4’N, 136°34.6’E

1990

1400

300

1700

NT2-06A,B
NT2-07A
NT2-08A

33°06.6’N, 136°31.3’E
33°08.6’N, 136°30.0’E
33°10.8’N, 136°28.6’E

2990
2260
2170

1000
2000
3500

0
0
0

1000
2000
3500

Site Name

Position

Penetration (m)
Sed

Bsm

Total

1000

0

1000

Brief Site-specific Objectives
Characterization of active splay
fault and fluid flow regime bycore sampling, logging, crosshole experiments and longterm monitoring
Study the progressive change inthe fault properties byintersecting the splay fault at
intermediate depth of 2km
Study the progressive change inthe fault properties byintersecting the splay fault at
intermediate depth of 3.5km
Total history of the splay fault
through continuous coring the
Kumano basin sediments andpilot drilling for riser platform
Alternate site for NT2-01A,B
Alternate site for NT2-02A
Alternate site for NT2-03A

603B-Full2

iSAS/IODP Site Summary Forms:
Form 1 - General Site Information
Please fill out information in all gray boxes

New

Revised 7 M arch 2002

RevisedSection A: Proposal Information
NanTroSEIZE Drilling and Observatory Phase 2
Mechanical and Hydrologic State of Mega-Splay Faults:
Implications for Seismogenic Faulting and Tsunami Generation

Title of Proposal:

Date Form
Submitted:

Oct. 1, 2003
Characterization of active splay fault and fluid flow regime by core sampling, logging, crosshole experiments and long-term monitoring.

Site Specific Focuses are placed on mechanical and hydrological properties (e.g. strength, pore pressure,
Objectives with
Priority permeability, porosity), fluid budget, origin of the fluid, detection of episodic flow.
(Must include generalobjectives in proposal)

Borehole long-term observatory for hydrogeological properties is planned as well as crosshole experiment.
Priority:2

List Previous
Drilling in Area:

None

Section B: General Site Information
Site Name:
NT2-01A/B(e.g. SWPAC-01A)

If site is a reoccupationof an old DSDP/ODP
Site, Please include
former Site #Southwestern
NankaiArea or Location: Trough off Kumano

Latitude: Deg: 33

Min: 13.0 N

Jurisdiction:

Longitude: Deg: 136

Min: 41.4 E

Distance to Land:

Coordinates
System:Within Japanese EEZ
45 NM

WGS 84

Priority of Site: Primary:

Alt:

Water Depth:

2.470 mSection C: Operational Information

Proposed
Penetration:(m)

Sediments
1000

Basement
0

What is the total sed. thickness? >3,000m
Total Penetration:

General Lithologies:

700m

Upper section of splay faults, consisting of
deformed, compacted turbidite

Coring Plan:(Specify or Circle)
1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

Neutron-Porosity
Litho-Density

Borehole Televiewer
Nuclear Magnetic
Resonance

Gamma Ray

Geochemical

Resistivity

Side-Wall Core
Sampling

Acoustic
Formation Image

Others (Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:Cuttings Sampling Intervals

20(Riser Holes Only)

LWD
Density-Neutron
Resistivity-Gamma Ray

Formation Fluid Sampling
Borehole Temperature& Pressure
Borehole Seismic

Acoustic)

Others ( FMI

)

°C

from

200

m

to

300

m,

5

m intervals

from

700

m

to

900

m,

5

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Drilling/Coring: 15

Logging: 5

Total On-Site: 40

Longterm Borehole Observation Plan/Re-entry Plan

Geodetic (strain/tilt), seismic and hydrologic (P,T) sensors with casing(20 days)
Cross-hole experiments (5 days)
Hazards/
Weather:

Please check following List of Potential Hazards
Shallow Gas

Hydrocarbon

Complicated Seabed
Condition

Hydrothermal Activity

Soft SeabedLandslide and Turbidity Current

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

Shallow Water Flow

High Temperature

H 2S

CO2

High Dip Angle

Ice Conditions

What is your Weather
window? (Preferable periodwith the reasons)

May – August(typhoon risk in lateAugust to September,then low pressure in
Novemberthrough
March)

Form 2 - Site Survey Detail

iSAS/IODP Site Summary Forms:
Please fill out information in all gray boxes

roposal #:New

Site #: NT2-01A/B

Data TypeSSP
Requirements

ExistsIn DB

1High resolution
seismic reflection

YES

Deep Penetration
seismic reflection

YES

3

Seismic Velocity†

YES

4

Seismic Grid

YES

5a

Refraction

YES

Refraction

Details of available data and data that are still to be collected
Primary Line(s)JAMSTEC Line-I (Feb. 2003):Location of Site on line (SP or Time only)

JAMSTEC Line-9 (Feb. 2003)

Primary Line(s):KR0108-4

Location of Site on line (SP or Time only)

Crossing Lines(s):(surface)

5bDate Form Submitted: Oct. 1, 2003

Crossing Lines(s):2RevisedYES

Stacking velocity and migration velocity from MCS lines.
OBS data also available.
Acquired by JAMSTEC in Feb. 2003
Two-ship COP (max. offset 20km) was obtained by JAMSTEC in Sep.
2002
OBS data by Nakanishi et al. (1997)(near bottom)
Location of Site on line (Time)6

3.5 kHz

NO

7

YES

Multi-narrow beam data by JAMSTEC R/V Yokosuka

YES

Some data collected using IZANAGI side scan sonar

YES

Taken by submersibles of JASMTEC

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

YES

Obtained from surface ship, submersibles, long-erm monitoring and BSR

11a

Magnetics

YES

Compiled map published from AIST, Japan

11b

Gravity

YES

Compiled map published from AIST, Japan

12
13
14a
14b
15

YES
YES
YES

Gravity and piston cores
Taken by submersible and ROV
Available on JODC web page (http://www.jodc.go.jp/)

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

SSP Classification of Site:
SSP Comments:

NO

Being processed now
YES

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging PlaniSAS/IODP Site Summary Forms:
New

Proposal #:Water Depth (m): 2470

Site #: NT2-01A/B
Sed. Penetration (m): 1000

RevisedDate Form Submitted: Oct. 1, 2003
Basement Penetration (m): 0

Do you need to use the conical side-entry sub (CSES) at this site? Yes

No

Are high temperatures expected at this site?

Yes

No

Are there any other special requirements for logging at this site?

Yes

No

If “Yes” Please describe requirements:

What do you estimate the total logging time for this site to be:
Relevance(1=high, 3=Low)

Measurement Type
Neutron-Porosity

Scientific Objective
Estimation of water content in sedimentary sequences and basement.

1

Litho-Density

Estimation of water content,bulk density,and mineral composition in1

sedimentary sequences and basement.
Natural Gamma Ray

Estimation clay contents and mineral composition in sedimentary1

sequences and basement.
Resistivity-Induction

Estimation of water content and electro-magnetic properties in1

sedimentary sequences and basement.
Acoustic

FMS

Imaging of sedimentary structures and fractures.Core-log correlation of1

structural features.
BHTV

Resistivity-Laterolog
Magnetic/Susceptibility

Density-Neutron (LWD)

Estimation of water contents,bulk density,and lithology in unstable1

borehole environments.
Resitivity-Gamma

Ray

Estimation of water contents,bulk density,and lithology in unstable(LWD)

borehole environments.

Other: Special tools (CORK,

Cross-hole hydrologic and electrical experiment.

PACKER, VSP, PCS, FWS,

Hydrofracturing, Packer injection test

WSP

CORK and Geodetic borehole observatory

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

RAB

1

1

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

Form 4 – Pollution & Safety Hazard Summary

iSAS/IODP Site Summary Forms:
New

Please fill out information in all gray boxes

Proposal #:1

34Date Form Submitted: Oct. 1, 2003

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT2-01A/B

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information, list
all commercial drilling in thisarea that produced or yieldedsignificant hydrocarbon shows.
Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?

APC to refusal,then XCB to refusal.RCB to 1000 m

JNOC will conduct drilling in eastern Nankai in 2004. This datawill be used for ur
program.

None

Yes, MCS profile shows BSRs

5

Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.

6

What “special” precautions will
be taken during drilling?

Yes, During drilling into the fault zone, hole may collapse.

What abandonment procedures
do you plan to follow:

None

7

8

Please list other natural ormanmade hazards which may
effect ship’s operations:

Strong Kuroshio current, typhoon (June – October)(e.g. ice, currents, cables)

9

Revised

Summary: What do you
consider the major risks indrilling at this site?

Current

Form 5 – Lithologic Summary

iSAS/IODP Site Summary Forms:

New

Proposal #:Site #: NT2-01A/B

Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

300

Unconformity

800

fault

Age

Holoc
ene toMioce
neRevisedDate Form Submitted: Oct. 1, 2003

Assumedvelocity(km/sec)

Lithology

Paleoenvironment

1.62.5km/s

Slope
sediments

Accretionary
prism

to
old
accretionaryrocks

Avg. rateof sed.
accum.
(m/My)

Comments

iSAS/IODP Site Summary Forms:

603B-Full2

Form 1 - General Site Information
Please fill out information in all gray boxes

New

Revised 7 M arch 2002

RevisedSection A: Proposal Information
NanTroSEIZE Drilling and Observatory Phase 2
Mechanical and Hydrologic State of Mega-Splay Faults:
Implications for Seismogenic Faulting and Tsunami Generation

Title of Proposal:

Date Form
Submitted:

Oct. 1, 2003
Study the progressive change in the fault properties by intersecting the splay fault at

Site Specific intermediate depth of 2km. Integration with NT2-01A and NT2-03A are essential.
Objectives with
Priority(Must include generalobjectives in proposal)

List Previous
Drilling in Area:

Priority:2

None

Section B: General Site Information
Site Name:
NT2-02A(e.g. SWPAC-01A)

If site is a reoccupationof an old DSDP/ODP
Site, Please include
former Site #Southwestern
NankaiArea or Location: Trough off Kumano

Latitude: Deg: 33

Min: 14.0 N

Jurisdiction:

Longitude: Deg: 136

Min: 40.8 E

Distance to Land:

Coordinates
System:Within Japanese EEZ
45 NM

WGS 84

Priority of Site: Primary:

Alt:

Water Depth:

2,080 mSection C: Operational Information

Proposed
Penetration:(m)

Sediments
2000

Basement
0

What is the total sed. thickness? >3,000m
Total Penetration:

General Lithologies:

1,700

m

Slope basin sediment on top, fractured
section across the splay fault, and underlying
deformed, compacted turbidite

Coring Plan:(Specify or Circle)
1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

Neutron-Porosity
Litho-Density

Borehole Televiewer
Nuclear Magnetic
Resonance

Gamma Ray

Geochemical

Resistivity

Side-Wall Core
Sampling
Others (Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:Cuttings Sampling Intervals(Riser Holes Only)

Density-Neutron
Resistivity-Gamma Ray

Formation Fluid Sampling
Borehole Temperature& Pressure
Borehole Seismic

Acoustic
Formation Image

40-60

LWD

Acoustic)

Others ( FMI

)

°C

from

300

m

to

500

m,

5

m intervals

from

1700

m

to

1900

m,

5

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Hazards/
Weather:

Drilling/Coring: 25

Logging: 10

Total On-Site: 35

Longterm Borehole Observation Plan/Re-entry Plan

Please check following List of Potential Hazards
Shallow Gas

Hydrocarbon

Complicated Seabed
Condition

Hydrothermal Activity

Soft SeabedLandslide and Turbidity Current

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

Shallow Water Flow

High Temperature

H 2S

CO2

High Dip Angle

Ice Conditions

What is your Weather
window? (Preferable periodwith the reasons)

May – August(typhoon risk in lateAugust to September,then low pressure in
Novemberthrough
March)

Form 2 - Site Survey Detail

iSAS/IODP Site Summary Forms:
Please fill out information in all gray boxes

roposal #:New

Site #: NT2-02A

Data TypeSSP
Requirements

ExistsIn DB

1High resolution
seismic reflection

YES

Deep Penetration
seismic reflection

YES

3

Seismic Velocity†

YES

4

Seismic Grid

YES

5a

Refraction

YES

Refraction

Details of available data and data that are still to be collected
Primary Line(s)JAMSTEC Line-I (Feb. 2003):Location of Site on line (SP or Time only)

JAMSTEC Line-9 (Feb. 2003)

Primary Line(s):KR0108-4

Location of Site on line (SP or Time only)

Crossing Lines(s):(surface)

5bDate Form Submitted: Oct. 1, 2003

Crossing Lines(s):2RevisedYES

Stacking velocity and migration velocity from MCS lines.
OBS data also available.
Acquired by JAMSTEC in Feb. 2003
Two-ship COP (max. offset 20km) was obtained by JAMSTEC in Sep.
2002
OBS data by Nakanishi et al. (1997)(near bottom)
Location of Site on line (Time)6

3.5 kHz

NO

7

YES

Multi-narrow beam data by JAMSTEC R/V Yokosuka

YES

Some data collected using IZANAGI side scan sonar

YES

Taken by submersibles of JASMTEC

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

YES

Obtained from surface ship, submersibles, long-erm monitoring and BSR

11a

Magnetics

YES

Compiled map published from AIST, Japan

11b

Gravity

YES

Compiled map published from AIST, Japan

12
13
14a
14b
15

YES
YES
YES

Gravity and piston cores
Taken by submersible and ROV
Available on JODC web page (http://www.jodc.go.jp/)

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

SSP Classification of Site:
SSP Comments:

NO

Being processed now
YES

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging PlaniSAS/IODP Site Summary Forms:
New

Proposal #:Water Depth (m): 2080

Site #: NT2-02A
Sed. Penetration (m): 2000

RevisedDate Form Submitted: Oct. 1, 2003
Basement Penetration (m): 0

Do you need to use the conical side-entry sub (CSES) at this site? Yes

No

Are high temperatures expected at this site?

Yes

No

Are there any other special requirements for logging at this site?

Yes

No

If “Yes” Please describe requirements:

What do you estimate the total logging time for this site to be:
Relevance(1=high, 3=Low)

Measurement Type
Neutron-Porosity

Scientific Objective
Estimation of water content in sedimentary sequences and basement.

1

Litho-Density

Estimation of water content,bulk density,and mineral composition in1

sedimentary sequences and basement.
Natural Gamma Ray

Estimation clay contents and mineral composition in sedimentary1

sequences and basement.
Resistivity-Induction

Estimation of water content and electro-magnetic properties in1

sedimentary sequences and basement.
Acoustic

FMS

Imaging of sedimentary structures and fractures.Core-log correlation of1

structural features.
BHTV

Resistivity-Laterolog

Magnetic/Susceptibility

Density-Neutron (LWD)

Estimation of water contents,bulk density,and lithology in unstable1

borehole environments.
Resitivity-Gamma

Ray

(LWD)

Estimation of water contents,bulk density,and lithology in unstableborehole environments.

Other: Special tools (CORK,
PACKER, VSP, PCS, FWS,

1

2
RAB preferred

WSP

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

Form 4 – Pollution & Safety Hazard Summary

iSAS/IODP Site Summary Forms:
New

Please fill out information in all gray boxes

Proposal #:1

34Date Form Submitted: Oct. 1, 2003

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT2-02A

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information, list
all commercial drilling in thisarea that produced or yieldedsignificant hydrocarbon shows.
Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?

APC to refusal,then XCB to refusal.RCB to 2000 m

JNOC will conduct drilling in eastern Nankai in 2004. This datawill be used for ur
program.

None

Yes, MCS profile shows BSRs

5

Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.

6

What “special” precautions will
be taken during drilling?

Yes, During drilling into the fault zone, hole may collapse.

What abandonment procedures
do you plan to follow:

None

7

8

Please list other natural ormanmade hazards which may
effect ship’s operations:

Strong Kuroshio current, typhoon (June – October)(e.g. ice, currents, cables)

9

Revised

Summary: What do you
consider the major risks indrilling at this site?

Current

Form 5 – Lithologic Summary

iSAS/IODP Site Summary Forms:

New

Proposal #:Site #: NT2-02A

Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

400

Unconformity

1800

fault

Age

Holoc
ene toMioce
neRevisedDate Form Submitted: Oct. 1, 2003

Assumedvelocity(km/sec)

Lithology

Paleoenvironment

1.62.5km/s

Slope
sediments

Accretionary
prism

to
old
accretionaryrocks

Avg. rateof sed.
accum.
(m/My)

Comments

iSAS/IODP Site Summary Forms:

603B-Full2

Form 1 - General Site Information
Please fill out information in all gray boxes

New

Revised 7 M arch 2002

RevisedSection A: Proposal Information
NanTroSEIZE Drilling and Observatory Phase 2
Mechanical and Hydrologic State of Mega-Splay Faults:
Implications for Seismogenic Faulting and Tsunami Generation

Title of Proposal:

Date Form
Submitted:

Oct. 1, 2003
Study the progressive change in the fault properties by intersecting the splay fault at

Site Specific intermediate depth of 3.5km. Integration with NT2-01A and NT2-02A are essential.
Objectives with
Priority(Must include generalobjectives in proposal)

List Previous
Drilling in Area:

Priority:1

None

Section B: General Site Information
Site Name:
NT2-03A(e.g. SWPAC-01A)

If site is a reoccupationof an old DSDP/ODP
Site, Please include
former Site #Southwestern
NankaiArea or Location: Trough off Kumano

Latitude: Deg: 33

Min: 15.9 N

Jurisdiction:

Longitude: Deg: 136

Min: 39.5 E

Distance to Land:

Coordinates
System:Within Japanese EEZ
45 NM

WGS 84

Priority of Site: Primary:

Alt:

Water Depth:

2,240 mSection C: Operational Information

Proposed
Penetration:(m)

Sediments
3500

Basement
0

What is the total sed. thickness? >3,000m
Total Penetration:

2,200

m

General Lithologies:

Slope basin sediment on top, fractured
section across the splay fault, and underlying
deformed, compacted turbidite
Coring Plan: Continuous coring may be replaced with ordinary/LWD logging.

(Specify or Circle)

1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

Neutron-Porosity
Litho-Density

Borehole Televiewer
Nuclear Magnetic
Resonance

Gamma Ray

Geochemical

Resistivity

Side-Wall Core
Sampling
Others (Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:Cuttings Sampling Intervals

80-100Density-Neutron
Resistivity-Gamma Ray

Formation Fluid Sampling
Borehole Temperature& Pressure
Borehole Seismic

Acoustic
Formation Image(Riser Holes Only)

LWD

Acoustic)

Others ( FMI

)

°C

from

1700

m

to

1900

m,

5

m intervals

from

3300

m

to

3500

m,

5

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Drilling/Coring: 130

Logging: 20

Total On-Site: 250

Longterm Borehole Observation Plan/Re-entry Plan

Geodetic (strain/tilt), seismic and hydrologic (P,T) sensors (100 days?)
Hazards/
Weather:

Please check following List of Potential Hazards
Shallow Gas

Hydrocarbon

Complicated Seabed
Condition

Hydrothermal Activity

Soft SeabedLandslide and Turbidity Current

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

Shallow Water Flow

High Temperature

H 2S

CO2

High Dip Angle

Ice Conditions

What is your Weather
window? (Preferable periodwith the reasons)

May – August(typhoon risk in lateAugust to September,then low pressure in
Novemberthrough
March)

Form 2 - Site Survey Detail

iSAS/IODP Site Summary Forms:
Please fill out information in all gray boxes

roposal #:New

Site #: NT2-03A

Data TypeSSP
Requirements

ExistsIn DB

1High resolution
seismic reflection

YES

Deep Penetration
seismic reflection

YES

3

Seismic Velocity†

YES

4

Seismic Grid

YES

5a

Refraction

YES

Refraction

Details of available data and data that are still to be collected
Primary Line(s)JAMSTEC Line-I (Feb. 2003):Location of Site on line (SP or Time only)

JAMSTEC Line-9 (Feb. 2003)

Primary Line(s):KR0108-4

Location of Site on line (SP or Time only)

Crossing Lines(s):(surface)

5bDate Form Submitted: Oct. 1, 2003

Crossing Lines(s):2RevisedYES

Stacking velocity and migration velocity from MCS lines.
OBS data also available.
Acquired by JAMSTEC in Feb. 2003
Two-ship COP (max. offset 20km) was obtained by JAMSTEC in Sep.
2002
OBS data by Nakanishi et al. (1997)(near bottom)
Location of Site on line (Time)6

3.5 kHz

NO

7

YES

Multi-narrow beam data by JAMSTEC R/V Yokosuka

YES

Some data collected using IZANAGI side scan sonar

YES

Taken by submersibles of JASMTEC

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

YES

Obtained from surface ship, submersibles, long-erm monitoring and BSR

11a

Magnetics

YES

Compiled map published from AIST, Japan

11b

Gravity

YES

Compiled map published from AIST, Japan

12
13
14a
14b
15

YES
YES
YES

Gravity and piston cores
Taken by submersible and ROV
Available on JODC web page (http://www.jodc.go.jp/)

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

SSP Classification of Site:
SSP Comments:

NO

Being processed now
YES

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging PlaniSAS/IODP Site Summary Forms:
New

Proposal #:Water Depth (m): 2240

Site #: NT2-03A
Sed. Penetration (m): 3500

RevisedDate Form Submitted: Oct. 1, 2003
Basement Penetration (m): 0

Do you need to use the conical side-entry sub (CSES) at this site? Yes

No

Are high temperatures expected at this site?

Yes

No

Are there any other special requirements for logging at this site?

Yes

No

If “Yes” Please describe requirements:

What do you estimate the total logging time for this site to be:
Relevance(1=high, 3=Low)

Measurement Type
Neutron-Porosity

Scientific Objective
Estimation of water content in sedimentary sequences and basement.

1

Litho-Density

Estimation of water content,bulk density,and mineral composition in1

sedimentary sequences and basement.
Natural Gamma Ray

Estimation clay contents and mineral composition in sedimentary1

sequences and basement.
Resistivity-Induction

Estimation of water content and electro-magnetic properties in1

sedimentary sequences and basement.
Acoustic

FMS

Imaging of sedimentary structures and fractures.Core-log correlation of1

structural features.
BHTV

Resistivity-Laterolog
Magnetic/Susceptibility

Density-Neutron (LWD)

Estimation of water contents,bulk density,and lithology in unstable1

borehole environments.
Resitivity-Gamma

Ray

Estimation of water contents,bulk density,and lithology in unstable(LWD)

borehole environments.

Other: Special tools (CORK,

RAB, VSP

PACKER, VSP, PCS, FWS,

Hydrofracturing, Packer injection test

WSP

CORK and Geodetic/Seismic borehole observatory

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

1

1

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

Form 4 – Pollution & Safety Hazard Summary

iSAS/IODP Site Summary Forms:
New

Please fill out information in all gray boxes

Proposal #:1

34Date Form Submitted: Oct. 1, 2003

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT2-03A

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information, list
all commercial drilling in thisarea that produced or yieldedsignificant hydrocarbon shows.
Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?

APC to refusal,then XCB to refusal.RCB to 3500 m

JNOC will conduct drilling in eastern Nankai in 2004. This datawill be used for ur
program.

None

Yes, MCS profile shows BSRs

5

Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.

6

What “special” precautions will
be taken during drilling?

Yes, During drilling into the fault zone, hole may collapse.

What abandonment procedures
do you plan to follow:

None

7

8

Please list other natural ormanmade hazards which may
effect ship’s operations:

Strong Kuroshio current, typhoon (June – October)(e.g. ice, currents, cables)

9

Revised

Summary: What do you
consider the major risks indrilling at this site?

Current

Form 5 – Lithologic Summary

iSAS/IODP Site Summary Forms:

New

Proposal #:Site #: NT2-03A

Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

300

Unconformity

1800

Fault

3400

fault

Age

Holoc
ene toMioce
neRevisedDate Form Submitted: Oct. 1, 2003

Assumedvelocity(km/sec)

Lithology

Paleoenvironment

1.62.5km/s

Slope
sediments

Accretionary
prism

to
old
accretionaryrocks

Avg. rateof sed.
accum.
(m/My)

Comments

iSAS/IODP Site Summary Forms:

603B-Full2

Form 1 - General Site Information
Please fill out information in all gray boxes

New

Revised 7 M arch 2002

RevisedSection A: Proposal Information
NanTroSEIZE Drilling and Observatory Phase 2
Mechanical and Hydrologic State of Mega-Splay Faults:
Implications for Seismogenic Faulting and Tsunami Generation

Title of Proposal:

Date Form
Submitted:

Oct. 1, 2003
Total history of the splay fault system through continuous coring the Kumano foreac basin

sediments: Objective 1 is the primary target of this site. Total history of the splay fault system
Site SpecificObjectives with is depicted by integrating the results from NT1b-05A as a reference for this site.
Priority(Must include general Drilling the underlying acoustic basement is planned to clarify the structure of pst
objectives in proposal)

accretionary complex, but is also used as a pilot drilling for the future riser-based proposal.
Priority:4

List Previous
Drilling in Area:

None

Section B: General Site Information
Site Name:
NT2-04A(e.g. SWPAC-01A)

If site is a reoccupationof an old DSDP/ODP
Site, Please include
former Site #Southwestern
NankaiArea or Location: Trough off Kumano

Latitude: Deg: 33

Min: 23.4 N

Jurisdiction:

Longitude: Deg: 136

Min: 34.6 E

Distance to Land:

Coordinates
System:Within Japanese EEZ
37 NM

WGS 84

Priority of Site: Primary:

Alt:

Water Depth:

1,990 mSection C: Operational Information

Proposed
Penetration:(m)

Sediments
1,400

Basement
300

What is the total sed. thickness? 1,400m
Total Penetration:

General Lithologies:

1,700

m

Forearc basin sediment with unconformity
laying on acoustic basement of Tertiallyaccretionary complex

Coring Plan:(Specify or Circle)
1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

Neutron-Porosity
Litho-Density

Borehole Televiewer
Nuclear Magnetic
Resonance

Gamma Ray

Geochemical

Resistivity

Side-Wall Core
Sampling
Others (Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:Cuttings Sampling Intervals(Riser Holes Only)

Density-Neutron

Formation Fluid Sampling
Borehole Temperature& Pressure
Borehole Seismic

Acoustic
Formation Image70

LWD
Resistivity-Gamma Ray
Acoustic)

Others ( FMI

)

°C

from

m

to

m,

m intervals

from

m

to

m,

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Hazards/
Weather:

Drilling/Coring: 15

Logging: 3

Total On-Site: 18

Longterm Borehole Observation Plan/Re-entry Plan

Please check following List of Potential Hazards
Shallow Gas

Hydrocarbon

Complicated Seabed
Condition

Hydrothermal Activity

Soft SeabedLandslide and Turbidity Current

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

Shallow Water Flow

High Temperature

H 2S

CO2

High Dip Angle

Ice Conditions

What is your Weather
window? (Preferable periodwith the reasons)

May – August(typhoon risk in lateAugust to September,then low pressure in
Novemberthrough
March)

Form 2 - Site Survey Detail

iSAS/IODP Site Summary Forms:
Please fill out information in all gray boxes

roposal #:New

Site #: NT2-04A

Data TypeSSP
Requirements

ExistsIn DB

1High resolution
seismic reflection

YES

Deep Penetration
seismic reflection

YES

3

Seismic Velocity†

YES

4

Seismic Grid

YES

5a

Refraction

YES

Refraction

Details of available data and data that are still to be collected
Primary Line(s)JAMSTEC Line-I (Feb. 2003):Location of Site on line (SP or Time only)

JAMSTEC Line (Feb. 2003)

Primary Line(s):KR0108-4

Location of Site on line (SP or Time only)

Crossing Lines(s):(surface)

5bDate Form Submitted: Oct. 1, 2003

Crossing Lines(s):2RevisedYES

Stacking velocity and migration velocity from MCS lines.
OBS data also available.
Acquired by JAMSTEC in Feb. 2003
Two-ship COP (max. offset 20km) was obtained by JAMSTEC in Sep.
2002
OBS data by Nakanishi et al. (1997)(near bottom)
Location of Site on line (Time)6

3.5 kHz

NO

7

YES

Multi-narrow beam data by JAMSTEC R/V Yokosuka

YES

Some data collected using IZANAGI side scan sonar

YES

Taken by submersibles of JASMTEC

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

YES

Obtained from surface ship, submersibles, long-erm monitoring and BSR

11a

Magnetics

YES

Compiled map published from AIST, Japan

11b

Gravity

YES

Compiled map published from AIST, Japan

12
13
14a
14b
15

YES
YES
YES

Gravity and piston cores
Taken by submersible and ROV
Available on JODC web page (http://www.jodc.go.jp/)

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

SSP Classification of Site:
SSP Comments:

NO

Being processed now
YES

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging PlaniSAS/IODP Site Summary Forms:
New

Proposal #:Water Depth (m): 1990

Site #: NT2-04A
Sed. Penetration (m): 1400

RevisedDate Form Submitted: Oct. 1, 2003
Basement Penetration (m): 300

Do you need to use the conical side-entry sub (CSES) at this site? Yes

No

Are high temperatures expected at this site?

Yes

No

Are there any other special requirements for logging at this site?

Yes

No

If “Yes” Please describe requirements:

What do you estimate the total logging time for this site to be:
Relevance(1=high, 3=Low)

Measurement Type
Neutron-Porosity

Scientific Objective
Estimation of water content in sedimentary sequences and basement.

1

Litho-Density

Estimation of water content,bulk density,and mineral composition in1

sedimentary sequences and basement.
Natural Gamma Ray

Estimation clay contents and mineral composition in sedimentary1

sequences and basement.
Resistivity-Induction

Estimation of water content and electro-magnetic properties in1

sedimentary sequences and basement.
Acoustic

FMS

Imaging of sedimentary structures and fractures.Core-log correlation of1

structural features.
BHTV

Resistivity-Laterolog

Magnetic/Susceptibility

Density-Neutron (LWD).
Resitivity-Gamma

Ray

(LWD)
Other: Special tools (CORK,
PACKER, VSP, PCS, FWS,WSP

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

Form 4 – Pollution & Safety Hazard Summary

iSAS/IODP Site Summary Forms:
New

Please fill out information in all gray boxes

Proposal #:1

34Date Form Submitted: Oct. 1, 2003

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT2-04A

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information, list
all commercial drilling in thisarea that produced or yieldedsignificant hydrocarbon shows.
Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?

APC to refusal,then XCB to refusal.RCB to 1700 m

JNOC will conduct drilling in eastern Nankai in 2004. This datawill be used for ur
program.

None

Yes, MCS profile shows BSRs

5

Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.

6

What “special” precautions will
be taken during drilling?

Yes, During drilling into the fault zone, hole may collapse.

What abandonment procedures
do you plan to follow:

None

7

8

Please list other natural ormanmade hazards which may
effect ship’s operations:

Strong Kuroshio current, typhoon (June – October)(e.g. ice, currents, cables)

9

Revised

Summary: What do you
consider the major risks indrilling at this site?

Current

Form 5 – Lithologic Summary

iSAS/IODP Site Summary Forms:

New

Proposal #:Site #: NT2-04A

Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

1400

Unconformity

Age

Holoc
ene tolate
TertialyAssumedvelocity(km/sec)

1.52.0km/s

RevisedDate Form Submitted: Oct. 1, 2003

Lithology

Paleoenvironment

Turbidite &hemipelagic
sediments

Forearc basin

Avg. rateof sed.
accum.
(m/My)

Comments

Fan deposits?

603B-Full2

iSAS/IODP Site Summary Forms:
Form 1 - General Site Information
Please fill out information in all gray boxes

New

Revised 7 M arch 2002

RevisedSection A: Proposal Information
NanTroSEIZE Drilling and Observatory Phase 2
Mechanical and Hydrologic State of Mega-Splay Faults:
Implications for Seismogenic Faulting and Tsunami Generation

Title of Proposal:

Date Form
Submitted:

Oct. 1, 2003
Characterization of active splay fault and fluid flow regime by core sampling, logging, crosshole experiments and long-term monitoring.

Site Specific Focuses are placed on mechanical and hydrological properties (e.g. strength, pore pressure,
Objectives with
Priority permeability, porosity), fluid budget, origin of the fluid, detection of episodic flow.
(Must include generalobjectives in proposal)

Borehole long-term observatory for hydrogeological properties is planned as well as crosshole experiment.
Priority:3 (Alternate site for NT2-01A/B)

List Previous
Drilling in Area:

None

Section B: General Site Information
Site Name:
NT2-06A/B(e.g. SWPAC-01A)

If site is a reoccupationof an old DSDP/ODP
Site, Please include
former Site #Southwestern
NankaiArea or Location: Trough off Kumano

Latitude: Deg: 33

Min: 06.6 N

Jurisdiction:

Longitude: Deg: 136

Min: 31.3 E

Distance to Land:

Coordinates
System:Within Japanese EEZ
45 NM

WGS 84

Priority of Site: Primary:Water Depth:

Alt:

1

2.990 mSection C: Operational Information

Proposed
Penetration:(m)

Sediments
1000

Basement
0

What is the total sed. thickness? >3,000m
Total Penetration:

General Lithologies:

700m

Upper section of splay faults, consisting of
deformed, compacted turbidite

Coring Plan:(Specify or Circle)
1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

Neutron-Porosity
Litho-Density

Borehole Televiewer
Nuclear Magnetic
Resonance

Gamma Ray

Geochemical

Resistivity

Side-Wall Core
Sampling

Acoustic
Formation Image

Others (Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:Cuttings Sampling Intervals

20(Riser Holes Only)

LWD
Density-Neutron
Resistivity-Gamma Ray

Formation Fluid Sampling
Borehole Temperature& Pressure
Borehole Seismic

Acoustic)

Others ( FMI

)

°C

from

200

m

to

300

m,

5

m intervals

from

700

m

to

900

m,

5

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Drilling/Coring: 15

Logging: 5

Total On-Site: 40

Longterm Borehole Observation Plan/Re-entry Plan

Geodetic (strain/tilt), seismic and hydrologic (P,T) sensors with casing(20 days)
Cross-hole experiments (5 days)
Hazards/
Weather:

Please check following List of Potential Hazards
Shallow Gas

Hydrocarbon

Complicated Seabed
Condition

Hydrothermal Activity

Soft SeabedLandslide and Turbidity Current

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

Shallow Water Flow

High Temperature

H 2S

High Dip Angle

CO2

2

Ice Conditions

What is your Weather
window? (Preferable periodwith the reasons)

May – August(typhoon risk in lateAugust to September,then low pressure in
Novemberthrough
March)

Form 2 - Site Survey Detail

iSAS/IODP Site Summary Forms:
Please fill out information in all gray boxes

roposal #:New

Site #: NT2-06A/B

Data TypeSSP
Requirements

ExistsIn DB

1High resolution
seismic reflection

YES

Deep Penetration
seismic reflection

YES

3

Seismic Velocity†

YES

4

Seismic Grid

YES

5a

Refraction

YES

Refraction

Details of available data and data that are still to be collected
Primary Line(s)JAMSTEC Line-I (Feb. 2003):Location of Site on line (SP or Time only)

JAMSTEC Line-9 (Feb. 2003)

Primary Line(s):KR0108-4

Location of Site on line (SP or Time only)

Crossing Lines(s):(surface)

5bDate Form Submitted: Oct. 1, 2003

Crossing Lines(s):2RevisedYES

Stacking velocity and migration velocity from MCS lines.
OBS data also available.
Acquired by JAMSTEC in Feb. 2003
Two-ship COP (max. offset 20km) was obtained by JAMSTEC in Sep.
2002
OBS data by Nakanishi et al. (1997)(near bottom)
Location of Site on line (Time)6

3.5 kHz

NO

7

YES

Multi-narrow beam data by JAMSTEC R/V Yokosuka

YES

Some data collected using IZANAGI side scan sonar

YES

Taken by submersibles of JASMTEC

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

YES

Obtained from surface ship, submersibles, long-erm monitoring and BSR

11a

Magnetics

YES

Compiled map published from AIST, Japan

11b

Gravity

YES

Compiled map published from AIST, Japan

12
13
14a
14b
15

YES
YES
YES

Gravity and piston cores
Taken by submersible and ROV
Available on JODC web page (http://www.jodc.go.jp/)

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

SSP Classification of Site:
SSP Comments:

NO

Being processed now
YES

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging PlaniSAS/IODP Site Summary Forms:
New

Proposal #:Water Depth (m): 2990

Site #: NT2-06A/B
Sed. Penetration (m): 1000

RevisedDate Form Submitted: Oct. 1, 2003
Basement Penetration (m): 0

Do you need to use the conical side-entry sub (CSES) at this site? Yes

No

Are high temperatures expected at this site?

Yes

No

Are there any other special requirements for logging at this site?

Yes

No

If “Yes” Please describe requirements:

What do you estimate the total logging time for this site to be:
Relevance(1=high, 3=Low)

Measurement Type
Neutron-Porosity

Scientific Objective
Estimation of water content in sedimentary sequences and basement.

1

Litho-Density

Estimation of water content,bulk density,and mineral composition in1

sedimentary sequences and basement.
Natural Gamma Ray

Estimation clay contents and mineral composition in sedimentary1

sequences and basement.
Resistivity-Induction

Estimation of water content and electro-magnetic properties in1

sedimentary sequences and basement.
Acoustic

FMS

Imaging of sedimentary structures and fractures.Core-log correlation of1

structural features.
BHTV

Resistivity-Laterolog
Magnetic/Susceptibility

Density-Neutron (LWD)

Estimation of water contents,bulk density,and lithology in unstable1

borehole environments.
Resitivity-Gamma

Ray

Estimation of water contents,bulk density,and lithology in unstable(LWD)

borehole environments.

Other: Special tools (CORK,

Cross-hole hydrologic and electrical experiment.

PACKER, VSP, PCS, FWS,

Hydrofracturing, Packer injection test

WSP

CORK and Geodetic borehole observatory

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

RAB

1

1

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

Form 4 – Pollution & Safety Hazard Summary

iSAS/IODP Site Summary Forms:
New

Please fill out information in all gray boxes

Proposal #:1

34Date Form Submitted: Oct. 1, 2003

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT2-06A/B

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information, list
all commercial drilling in thisarea that produced or yieldedsignificant hydrocarbon shows.
Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?

APC to refusal,then XCB to refusal.RCB to 1000 m

JNOC will conduct drilling in eastern Nankai in 2004. This datawill be used for ur
program.

None

Yes, MCS profile shows BSRs

5

Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.

6

What “special” precautions will
be taken during drilling?

Yes, During drilling into the fault zone, hole may collapse.

What abandonment procedures
do you plan to follow:

None

7

8

Please list other natural ormanmade hazards which may
effect ship’s operations:

Strong Kuroshio current, typhoon (June – October)(e.g. ice, currents, cables)

9

Revised

Summary: What do you
consider the major risks indrilling at this site?

Current

Form 5 – Lithologic Summary

iSAS/IODP Site Summary Forms:

New

Proposal #:Site #: NT2-06A/B

Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

300

Unconformity

800

fault

Age

Holoc
ene toMioce
neRevisedDate Form Submitted: Oct. 1, 2003

Assumedvelocity(km/sec)

Lithology

Paleoenvironment

1.62.5km/s

Slope
sediments

Accretionary
prism

to
old
accretionaryrocks

Avg. rateof sed.
accum.
(m/My)

Comments

iSAS/IODP Site Summary Forms:

603B-Full2

Form 1 - General Site Information
Please fill out information in all gray boxes

New

Revised 7 M arch 2002

RevisedSection A: Proposal Information
NanTroSEIZE Drilling and Observatory Phase 2
Mechanical and Hydrologic State of Mega-Splay Faults:
Implications for Seismogenic Faulting and Tsunami Generation

Title of Proposal:

Date Form
Submitted:

Oct. 1, 2003
Study the progressive change in the fault properties by intersecting the splay fault at

Site Specific intermediate depth of 2km. Integration with NT2-01A and NT2-03A are essential.
Objectives with
Priority(Must include generalobjectives in proposal)

List Previous
Drilling in Area:

Priority:2 (Alternate site for NT2-02A)

None

Section B: General Site Information
Site Name:
NT2-07A(e.g. SWPAC-01A)

If site is a reoccupationof an old DSDP/ODP
Site, Please include
former Site #Southwestern
NankaiArea or Location: Trough off Kumano

Latitude: Deg: 33

Min: 08.6 N

Jurisdiction:

Longitude: Deg: 136

Min: 30.0 E

Distance to Land:

Coordinates
System:Within Japanese EEZ
45 NM

WGS 84

Priority of Site: Primary:

Alt:

Water Depth:

2,260 mSection C: Operational Information

Proposed
Penetration:(m)

Sediments
2000

Basement
0

What is the total sed. thickness? >3,000m
Total Penetration:

General Lithologies:

1,700

m

Slope basin sediment on top, fractured
section across the splay fault, and underlying
deformed, compacted turbidite

Coring Plan:(Specify or Circle)
1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

Neutron-Porosity
Litho-Density

Borehole Televiewer
Nuclear Magnetic
Resonance

Gamma Ray

Geochemical

Resistivity

Side-Wall Core
Sampling
Others (Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:Cuttings Sampling Intervals(Riser Holes Only)

Density-Neutron
Resistivity-Gamma Ray

Formation Fluid Sampling
Borehole Temperature& Pressure
Borehole Seismic

Acoustic
Formation Image

40-60

LWD

Acoustic)

Others ( FMI

)

°C

from

300

m

to

500

m,

5

m intervals

from

1700

m

to

1900

m,

5

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Hazards/
Weather:

Drilling/Coring: 25

Logging: 10

Total On-Site: 35

Longterm Borehole Observation Plan/Re-entry Plan

Please check following List of Potential Hazards
Shallow Gas

Hydrocarbon

Complicated Seabed
Condition

Hydrothermal Activity

Soft SeabedLandslide and Turbidity Current

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

Shallow Water Flow

High Temperature

H 2S

CO2

High Dip Angle

Ice Conditions

What is your Weather
window? (Preferable periodwith the reasons)

May – August(typhoon risk in lateAugust to September,then low pressure in
Novemberthrough
March)

Form 2 - Site Survey Detail

iSAS/IODP Site Summary Forms:
Please fill out information in all gray boxes

roposal #:New

Site #: NT2-07A

Data TypeSSP
Requirements

ExistsIn DB

1High resolution
seismic reflection

YES

Deep Penetration
seismic reflection

YES

3

Seismic Velocity†

YES

4

Seismic Grid

YES

5a

Refraction

YES

Refraction

Details of available data and data that are still to be collected
Primary Line(s)JAMSTEC Line-I (Feb. 2003):Location of Site on line (SP or Time only)

JAMSTEC Line-9 (Feb. 2003)

Primary Line(s):KR0108-4

Location of Site on line (SP or Time only)

Crossing Lines(s):(surface)

5bDate Form Submitted: Oct. 1, 2003

Crossing Lines(s):2RevisedYES

Stacking velocity and migration velocity from MCS lines.
OBS data also available.
Acquired by JAMSTEC in Feb. 2003
Two-ship COP (max. offset 20km) was obtained by JAMSTEC in Sep.
2002
OBS data by Nakanishi et al. (1997)(near bottom)
Location of Site on line (Time)6

3.5 kHz

NO

7

YES

Multi-narrow beam data by JAMSTEC R/V Yokosuka

YES

Some data collected using IZANAGI side scan sonar

YES

Taken by submersibles of JASMTEC

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

YES

Obtained from surface ship, submersibles, long-erm monitoring and BSR

11a

Magnetics

YES

Compiled map published from AIST, Japan

11b

Gravity

YES

Compiled map published from AIST, Japan

12
13
14a
14b
15

YES
YES
YES

Gravity and piston cores
Taken by submersible and ROV
Available on JODC web page (http://www.jodc.go.jp/)

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

SSP Classification of Site:
SSP Comments:

NO

Being processed now
YES

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging PlaniSAS/IODP Site Summary Forms:
New

Proposal #:Water Depth (m): 2260

Site #: NT2-07A
Sed. Penetration (m): 2000

RevisedDate Form Submitted: Oct. 1, 2003
Basement Penetration (m): 0

Do you need to use the conical side-entry sub (CSES) at this site? Yes

No

Are high temperatures expected at this site?

Yes

No

Are there any other special requirements for logging at this site?

Yes

No

If “Yes” Please describe requirements:

What do you estimate the total logging time for this site to be:
Relevance(1=high, 3=Low)

Measurement Type
Neutron-Porosity

Scientific Objective
Estimation of water content in sedimentary sequences and basement.

1

Litho-Density

Estimation of water content,bulk density,and mineral composition in1

sedimentary sequences and basement.
Natural Gamma Ray

Estimation clay contents and mineral composition in sedimentary1

sequences and basement.
Resistivity-Induction

Estimation of water content and electro-magnetic properties in1

sedimentary sequences and basement.
Acoustic

FMS

Imaging of sedimentary structures and fractures.Core-log correlation of1

structural features.
BHTV

Resistivity-Laterolog

Magnetic/Susceptibility

Density-Neutron (LWD)

Estimation of water contents,bulk density,and lithology in unstable1

borehole environments.
Resitivity-Gamma

Ray

(LWD)

Estimation of water contents,bulk density,and lithology in unstableborehole environments.

Other: Special tools (CORK,
PACKER, VSP, PCS, FWS,

1

2
RAB preferred

WSP

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

Form 4 – Pollution & Safety Hazard Summary

iSAS/IODP Site Summary Forms:
New

Please fill out information in all gray boxes

Proposal #:1

34Date Form Submitted: Oct. 1, 2003

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT2-07A

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information, list
all commercial drilling in thisarea that produced or yieldedsignificant hydrocarbon shows.
Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?

APC to refusal,then XCB to refusal.RCB to 2000 m

JNOC will conduct drilling in eastern Nankai in 2004. This datawill be used for ur
program.

None

Yes, MCS profile shows BSRs

5

Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.

6

What “special” precautions will
be taken during drilling?

Yes, During drilling into the fault zone, hole may collapse.

What abandonment procedures
do you plan to follow:

None

7

8

Please list other natural ormanmade hazards which may
effect ship’s operations:

Strong Kuroshio current, typhoon (June – October)(e.g. ice, currents, cables)

9

Revised

Summary: What do you
consider the major risks indrilling at this site?

Current

Form 5 – Lithologic Summary

iSAS/IODP Site Summary Forms:

New

Proposal #:Site #: NT2-07A

Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

400

Unconformity

1800

fault

Age

Holoc
ene toMioce
neRevisedDate Form Submitted: Oct. 1, 2003

Assumedvelocity(km/sec)

Lithology

Paleoenvironment

1.62.5km/s

Slope
sediments

Accretionary
prism

to
old
accretionaryrocks

Avg. rateof sed.
accum.
(m/My)

Comments

iSAS/IODP Site Summary Forms:

603B-Full2

Form 1 - General Site Information
Please fill out information in all gray boxes

New

Revised 7 M arch 2002

RevisedSection A: Proposal Information
NanTroSEIZE Drilling and Observatory Phase 2
Mechanical and Hydrologic State of Mega-Splay Faults:
Implications for Seismogenic Faulting and Tsunami Generation

Title of Proposal:

Date Form
Submitted:

Oct. 1, 2003
Study the progressive change in the fault properties by intersecting the splay fault at

Site Specific intermediate depth of 3.5km. Integration with NT2-01A and NT2-02A are essential.
Objectives with
Priority(Must include generalobjectives in proposal)

List Previous
Drilling in Area:

Priority:1 (Alternate site for NT2-03A)

None

Section B: General Site Information
Site Name:
NT2-08A(e.g. SWPAC-01A)

If site is a reoccupationof an old DSDP/ODP
Site, Please include
former Site #Southwestern
NankaiArea or Location: Trough off Kumano

Latitude: Deg: 33

Min: 10.8 N

Jurisdiction:

Longitude: Deg: 136

Min: 28.6 E

Distance to Land:

Coordinates
System:Within Japanese EEZ
45 NM

WGS 84

Priority of Site: Primary:

Alt:

Water Depth:

2,170 mSection C: Operational Information

Proposed
Penetration:(m)

Sediments
3500

Basement
0

What is the total sed. thickness? >3,000m
Total Penetration:

2,200

m

General Lithologies:

Slope basin sediment on top, fractured
section across the splay fault, and underlying
deformed, compacted turbidite
Coring Plan: Continuous coring may be replaced with ordinary/LWD logging.

(Specify or Circle)

1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

Neutron-Porosity
Litho-Density

Borehole Televiewer
Nuclear Magnetic
Resonance

Gamma Ray

Geochemical

Resistivity

Side-Wall Core
Sampling
Others (Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:Cuttings Sampling Intervals

80-100Density-Neutron
Resistivity-Gamma Ray

Formation Fluid Sampling
Borehole Temperature& Pressure
Borehole Seismic

Acoustic
Formation Image(Riser Holes Only)

LWD

Acoustic)

Others ( FMI

)

°C

from

1700

m

to

1900

m,

5

m intervals

from

3300

m

to

3500

m,

5

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Drilling/Coring: 130

Logging: 20

Total On-Site: 250

Longterm Borehole Observation Plan/Re-entry Plan

Geodetic (strain/tilt), seismic and hydrologic (P,T) sensors (100 days?)
Hazards/
Weather:

Please check following List of Potential Hazards
Shallow Gas

Hydrocarbon

Complicated Seabed
Condition

Hydrothermal Activity

Soft SeabedLandslide and Turbidity Current

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

Shallow Water Flow

High Temperature

H 2S

CO2

High Dip Angle

Ice Conditions

What is your Weather
window? (Preferable periodwith the reasons)

May – August(typhoon risk in lateAugust to September,then low pressure in
Novemberthrough
March)

Form 2 - Site Survey Detail

iSAS/IODP Site Summary Forms:
Please fill out information in all gray boxes

roposal #:New

Site #: NT2-08A

Data TypeSSP
Requirements

ExistsIn DB

1High resolution
seismic reflection

YES

Deep Penetration
seismic reflection

YES

3

Seismic Velocity†

YES

4

Seismic Grid

YES

5a

Refraction

YES

Refraction

Details of available data and data that are still to be collected
Primary Line(s)JAMSTEC Line-I (Feb. 2003):Location of Site on line (SP or Time only)

JAMSTEC Line-9 (Feb. 2003)

Primary Line(s):KR0108-4

Location of Site on line (SP or Time only)

Crossing Lines(s):(surface)

5bDate Form Submitted: Oct. 1, 2003

Crossing Lines(s):2RevisedYES

Stacking velocity and migration velocity from MCS lines.
OBS data also available.
Acquired by JAMSTEC in Feb. 2003
Two-ship COP (max. offset 20km) was obtained by JAMSTEC in Sep.
2002
OBS data by Nakanishi et al. (1997)(near bottom)
Location of Site on line (Time)6

3.5 kHz

NO

7

YES

Multi-narrow beam data by JAMSTEC R/V Yokosuka

YES

Some data collected using IZANAGI side scan sonar

YES

Taken by submersibles of JASMTEC

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

YES

Obtained from surface ship, submersibles, long-erm monitoring and BSR

11a

Magnetics

YES

Compiled map published from AIST, Japan

11b

Gravity

YES

Compiled map published from AIST, Japan

12
13
14a
14b
15

YES
YES
YES

Gravity and piston cores
Taken by submersible and ROV
Available on JODC web page (http://www.jodc.go.jp/)

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

SSP Classification of Site:
SSP Comments:

NO

Being processed now
YES

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging PlaniSAS/IODP Site Summary Forms:
New

Proposal #:Water Depth (m): 2170

Site #: NT2-08A
Sed. Penetration (m): 3500

RevisedDate Form Submitted: Oct. 1, 2003
Basement Penetration (m): 0

Do you need to use the conical side-entry sub (CSES) at this site? Yes

No

Are high temperatures expected at this site?

Yes

No

Are there any other special requirements for logging at this site?

Yes

No

If “Yes” Please describe requirements:

What do you estimate the total logging time for this site to be:
Relevance(1=high, 3=Low)

Measurement Type
Neutron-Porosity

Scientific Objective
Estimation of water content in sedimentary sequences and basement.

1

Litho-Density

Estimation of water content,bulk density,and mineral composition in1

sedimentary sequences and basement.
Natural Gamma Ray

Estimation clay contents and mineral composition in sedimentary1

sequences and basement.
Resistivity-Induction

Estimation of water content and electro-magnetic properties in1

sedimentary sequences and basement.
Acoustic

FMS

Imaging of sedimentary structures and fractures.Core-log correlation of1

structural features.
BHTV

Resistivity-Laterolog
Magnetic/Susceptibility

Density-Neutron (LWD)

Estimation of water contents,bulk density,and lithology in unstable1

borehole environments.
Resitivity-Gamma

Ray

Estimation of water contents,bulk density,and lithology in unstable(LWD)

borehole environments.

Other: Special tools (CORK,

RAB, VSP

PACKER, VSP, PCS, FWS,

Hydrofracturing, Packer injection test

WSP

CORK and Geodetic/Seismic borehole observatory

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

1

1

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

Form 4 – Pollution & Safety Hazard Summary

iSAS/IODP Site Summary Forms:
New

Please fill out information in all gray boxes

Proposal #:1

34Date Form Submitted: Oct. 1, 2003

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT2-08A

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information, list
all commercial drilling in thisarea that produced or yieldedsignificant hydrocarbon shows.
Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?

APC to refusal,then XCB to refusal.RCB to 3500 m

JNOC will conduct drilling in eastern Nankai in 2004. This datawill be used for ur
program.

None

Yes, MCS profile shows BSRs

5

Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.

6

What “special” precautions will
be taken during drilling?

Yes, During drilling into the fault zone, hole may collapse.

What abandonment procedures
do you plan to follow:

None

7

8

Please list other natural ormanmade hazards which may
effect ship’s operations:

Strong Kuroshio current, typhoon (June – October)(e.g. ice, currents, cables)

9

Revised

Summary: What do you
consider the major risks indrilling at this site?

Current

Form 5 – Lithologic Summary

iSAS/IODP Site Summary Forms:

New

Proposal #:Site #: NT2-08A

Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

300

Unconformity

1800

Fault

3400

fault

Age

Holoc
ene toMioce
neRevisedDate Form Submitted: Oct. 1, 2003

Assumedvelocity(km/sec)

Lithology

Paleoenvironment

1.62.5km/s

Slope
sediments

Accretionary
prism

to
old
accretionaryrocks

Avg. rateof sed.
accum.
(m/My)

Comments

Received 1 April 2004

IODP Proposal Cover Sheet
New

RevisedAddendum

Above For Official Use Only

Please fill out information in all gray boxes
Title:

603C-Full

NanTroSEIZE Drilling and Observatory Phase 3: A Window into the
Seismogenic Zone

Proponent(s): Kiyoshi Suyehiro, Harold Tobin, Eiichiro Araki, Susan Bilek, Tadanori Goto, Pierre Henry,
Gaku Kimura, Aitaro Kato, Masa Kinoshita, Chris Marone, Greg Moore, J. Casey Moore,
Demian Saffer, Arito Sakaguchi, Masanao Shinohara, Ralph Stephen, Akito Tsutsumi,
Kohtaro Ujiie, Kelin Wang
Keywords: Seismogenic zone, fault mechanics, borehole observatory,
SouthwesternArea:(5 or less) tsunamigenesis
Japan margin

Contact Information:
Contact Person:
Department:
Organization:
AddressTel.:
E-mail:Harold Tobin
Earth and Environmental Science Department
New Mexico Tech
Socorro, NM 87801 USA
505-835-5920
Fax: 505-835-6436
tobin@nmt.edu
Permission to post abstract on iSAS Web site:

Yes

No

Abstract: (400 words or less)
The principal goal of NanTroSEIZE is to understand seismogenesis and rupture propagation along subduction
plate boundary faults by direct testing of key hypotheses related to the mechanics of subduction megathrusts.
NanTroSEIZE Phase 3 represents the culmination of the Seismogenic Zone Initiative: drilling into,
sampling, and monitoring of the subduction zone plate interface at depths of coseismic slip. This proposal
centers on the deepest drilling effort in the NanTroSEIZE project: sampling a single site across the entire plateinterface into the top of the subducting Philippine Sea plate. The proposed borehole will penetrate a major splay
fault (~4 km bsf) potentially implicated in coseismic slip, as well as the master decollement (~6 km bsf), at alocation of shallow large slip during the 1944 Tonankai Mw 8.2 earthquake.
The goal of this proposal is to address two key questions by a combination of logging, coring, down-hole
experiments, and long-term monitoring:(1) What controls the nature of fault slip and its spatial variability (i.e. the updip transition from aseismic toseismogenic slip)?
(2) What processes control temporal changes in slip behavior on a given fault?
Specifically, this proposal is aimed at testing hypotheses explaining controls on unstable slip, and documenting theroles of fault zone state (stress, fluid pressure, fabric) and composition in controlling frictional rheology. Downhole and monitoring observations, core analyses, and post-cruise laboratory studies will provide direct tests ofexisting hypothesis for fault zone frictional behavior. One focus of Phase 3 will be on documenting the material
properties and ambient conditions at each of the two faults, and comparing results with findings from shallower
portions of the plate boundary system sampled during Phases 1 and 2 to rigorously characterize controls on fault
slip behavior in an active megathrust system.
Proposedactivities include (1) drilling, LWD, and casing of a main hole - with drillstem tests performed at
casing set points, (2) creation of a sidetrack coring hole with continuous coring from 4000-6200 mbsf, and (3) welltests in perforated casing and installation of an observatory system for continuous monitoring of pore fluidpressure, temperature, strain, tilt, and seismicity. The borehole observatories, along with surface arrays ofmeasurements, and regional geodetic and seismic monitoring, will provide critical data toward understanding theslip distribution, temporal variability, and controlling mechanisms of seismogenic faulting along the plate boundary
system.

603C-Full
Scientific Objectives: (250 words or less)
The scientific objectives of NanTroSEIZE Phase 3 drilling are to use direct observation to rigorously
evaluate the following hypotheses, which are central to understanding earthquake mechanics along subduction
megathrusts:(1) Systematic, progressive material and state changes control the onset of seismogenic behavior on subduction
thrusts; (2) Subduction zone megathrusts are weak faults; (3) Within the seismogenic zone, relative plate motion is
primarily accommodated by coseismic frictional slip in a concentrated zone; (4) Physical properties, chemistry, andstate of the fault zone change systematically with time throughout the earthquake cycle; and (5) The mega-splay(OOST) thrust fault system slips in discrete events which may include tsunamigenic slip during great earthquakes.
These hypotheses will be evaluated by detailed characterization – in fault zones and in the surrounding rock volume –of the lithology, structural geology, and physical properties of the rock; the geochemistry of pore fluids; themicrobiological activity; the distribution of temperature, stress, and pore fluid pressure in space and time; theseismicity in the near-borehole environment and downdip; the temporal evolution of the strain field; and the evolutionof physical properties in the volume around the borehole.

Please describe below any non-standard measurements technology needed to achieve the proposed scientific objectives.
Essentially all technologies to be used are non-standard. These will include, but are not limited to:Riser-based drilling, LWD suite, DVTP-P, active hydrofracturing tests (wireline packer test), VSP.
A borehole observatory with multi-level packers and perforated intervals, Geodetic (strain/tilt), seismic andhydrologic (P,T) sensors and other instruments will be installed for a long-term borehole observatory.

Proposed Sites:

NT3-01A

33°17.6’N, 136°38.6’E

Water
Depth
(m)
1950

NT3-02A

33°12.9’N, 136°27.4’E

2100

Site Name

Position

Penetration (m)
Sed

Bsm

Total

Brief Site-specific Objectives

6000

200

6200

Study the progressive change inthe fault properties byintersecting the splay fault at~4.5km and the seismogenic
fault at 5.8 to 6km depth

6000

200

6200

Alternate site for NT3-01A

603C-Full

iSAS/IODP Site Summary Forms:
Form 1 - General Site Information
Please fill out information in all gray boxes

New

Revised 7 March 2002

RevisedSection A: Proposal Information
Title of Proposal:

Date Form
Submitted:

NanTroSEIZE Drilling and Observatory Phase 3: A Window into the
Seismogenic Zone
Apr. 1, 2003
Sample and instrument decollement, mega-splay, and wall rock of lower prism to address
fault rheology, slip history, and temporal change objectives.

Site SpecificObjectives with Priority:1
Priority(Must include generalobjectives in proposal)

None
List Previous
Drilling in Area:

Section B: General Site Information
Site Name:
NT3-01A(e.g. SWPAC-01A)

If site is a reoccupationof an old DSDP/ODP
Site, Please include
former Site #Area or Location:

Latitude: Deg: 33

Min: 17.6 N

Jurisdiction:

Longitude: Deg: 136

Min: 38.6 E

Distance to Land:

Coordinates
System:S o u t h w e s t e r nNankai
Trough off Kumano
Within Japanese EEZ
45 NM

WGS 84

Priority of Site: Primary: X

Alt:

Water Depth:

1,950 mSection C: Operational Information

Proposed
Penetration:(m)

Sediments
5800 - 6000

Basement
200

What is the total sed. thickness? >5,500m
Total Penetration:

6,200

m

General Lithologies:

Slope basin clastic sediments, accreted anddeformed trench turbidites, hemipelagic andpelagic mudstones, pillow basalt.
Coring Plan: Continuous coring may be replaced with LWD logging in intervals(Specify or Circle)

1-2-3-APC VPC*

XCB

MDCB*

PCS RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:

Special Tools

Standard Tools
Neutron-Porosity
Litho-Density

Borehole Televiewer
Nuclear Magnetic
Resonance

Gamma Ray

Geochemical

Resistivity

Side-Wall Core
Sampling

Acoustic
Formation Image

Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:Cuttings Sampling Intervals

150-170 degC

(Riser Holes Only)

LWD
Density-Neutron
Resistivity-Gamma Ray

Formation Fluid Sampling
Borehole Temperature& Pressure
Borehole Seismic

Acoustic

Others (Others ( FMI

)

)

°C

from

1500

m

to

3600

m,

5

m intervals

from

4300

m

to

6200

m,

5

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Drilling/Coring: ???

Logging: ??

Total On-Site: ???

Longterm Borehole Observation Plan/Re-entry Plan

Long-term observatory installation and data telemetry/recording
Hazards/
Weather:

Please check following List of Potential Hazards
Shallow Gas

Hydrocarbon

Complicated Seabed
Condition

Hydrothermal Activity

Soft SeabedLandslide and Turbidity Current

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

Shallow Water Flow

High Temperature
H2S

CO2

High Dip Angle

Ice Conditions

What is your Weather
window? (Preferable periodwith the reasons)

May – August optimal(typhoon risk in lateAugust to September)Form 2 - Site Survey Detail

iSAS/IODP Site Summary Forms:
Please fill out information in all gray boxes

Proposal #:New

Site #: NT3-01A

Data TypeSSP
Requirements

ExistsIn DB

1High resolution
seismic reflection

YES

Deep Penetration
seismic reflection

YES

3

Seismic Velocity†

YES

4

Seismic Grid

YES

5a

Refraction

YES

Details of available data and data that are still to be collected
Primary Line(s)JAMSTEC Line-L (Feb. 2003):Location of Site on line (SP or Time only)

Primary Line(s):KR0108-5

Location of Site on line (SP or Time only)

Crossing Lines(s):(surface)

Refraction

Date Form Submitted: Apr. 1, 2003

Crossing Lines(s): JAMSTEC Line-9 (Feb. 2003)

2

5b

RevisedYES

Stacking velocity and PODM migration velocity from MCS lines.
OBS wide-angle data also available.
Acquired by JAMSTEC in Feb. 2003, also IFREE lines from 1998 - 2003
Two-ship COP (max. offset 20km) was obtained by JAMSTEC in Sep.
2002
OBS data by Nakanishi et al. (1997)(near bottom)
Location of Site on line (Time)6

3.5 kHz

NO

7

YES

Multi-narrow beam data by JAMSTEC R/V Yokosuka

YES

Some data collected using IZANAGI side scan sonar

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

11a

8a
8b
9

NO
YES

Taken by submersibles of JASMTEC

YES

Obtained from surface ship, submersibles, long-term monitoring and BSR

Magnetics

YES

Compiled map published from AIST, Japan

11b

Gravity

YES

Compiled map published from AIST, Japan

12
13
14a
14b
15

YES
YES
YES

Gravity and piston cores
Taken by submersible and ROV
Available on JODC web page (http://www.jodc.go.jp/)

YES

Obana et al., in press

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

SSP Classification of Site:
SSP Comments:

YES

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging PlaniSAS/IODP Site Summary Forms:
New

Proposal #:Water Depth (m): 1950

Site #: NT3-01A
Sed. Penetration (m): 6000

Do you need to use the conical side-entry sub (CSES) at this site? Yes
Are high temperatures expected at this site?
Yes
Are there any other special requirements for logging at this site? Yes
If “Yes” Please describe requirements:

RevisedDate Form Submitted: Apr. 1, 2003
Basement Penetration (m): 200
No
No
No

What do you estimate the total logging time for this site to be:
Relevance(1=high, 3=Low)

Measurement Type
Neutron-Porosity

Scientific Objective
Estimation of water content in sedimentary sequences and basement.

1

Litho-Density

Estimation of water content,bulk density,and mineral composition in1

sedimentary sequences and basement.
Natural Gamma Ray

Estimation clay contents and mineral composition in sedimentary1

sequences and basement.
Resistivity-Induction

Estimation of water content and electro-magnetic properties in1

sedimentary sequences and basement.
Acoustic

Yes, dipole sonic, LWD sonic for physical properties

FMS

Preferably FMI & RAB. Imaging of sedimentary structures and1

fractures.Core-log correlation of structural features.
BHTV

Perhaps?

Resistivity-Laterolog

LWD resistivity

Magnetic/Susceptibility

Density-Neutron (LWD)

Estimation of water contents,bulk density,and lithology in unstable1

borehole environments.
Resitivity-Gamma

Ray

Estimation of water contents,bulk density,and lithology in unstable(LWD)

borehole environments.

Other: Special tools (CORK,

RAB, VSP

PACKER, VSP, PCS, FWS,

Hydrofracturing, Packer injection test

WSP

Geodetic/Seismic and multi-level packer borehole observatory

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

1

1

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

iSAS/IODP Site Summary Forms:

Form 4 – Pollution & Safety Hazard Summary

Please fill out information in all gray boxes

Proposal #:
1

3

4

5

6

7

8

Site #: NT3-01A

Date Form Submitted: Apr. 1, 2003

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information,
list all commercial drilling inthis area that produced or
yielded significant hydrocarbon
shows. Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?
Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.
What “special” precautions will
be taken during drilling?

What abandonment procedures
do you plan to follow:
Please list other natural ormanmade hazards which may
effect ship’s operations:

APC to refusal,then XCB to refusal.RCB to 6200 m or 200 m into basement.

JNOC will conduct BSR drilling in eastern Nankai in 2004. This data will be used forour program.

None

Yes, MCS profile shows BSRs

Except for normal gas hydrate occurrence, none.

Fault zones are likely unstable and overpressured, prone to collapse, possible pressure
kicks.

Unknown at this time for riser operations

Strong Kuroshio current, typhoon (June – October)(e.g. ice, currents, cables)

9

Revised

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)

2

New

Summary: What do you
consider the major risks indrilling at this site?

Current, shallow overpressure (but latter is probably not major

Form 5 – Lithologic Summary

iSAS/IODP Site Summary Forms:
Proposal #:Site #: NT3-01A

Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

200
1000

Unconformity
Unconformity

4500

Fault

6000

fault

Age

Holoc
ene to
Mioce
ne

New

RevisedDate Form Submitted: Apr. 1, 2003

Assumedvelocity(km/sec)

Lithology

Paleoenvironment

1.62.5km/s

Slope
sediments

Accretionary
prism

to
old
accretionaryrocks

Avg. rateof sed.
accum.
(m/My)

Comments

603C-Full

iSAS/IODP Site Summary Forms:
Form 1 - General Site Information
Please fill out information in all gray boxes

New

Revised 7 March 2002

RevisedSection A: Proposal Information
Title of Proposal:

Date Form
Submitted:

NanTroSEIZE Drilling and Observatory Phase 3: A Window into the
Seismogenic Zone
Apr. 1, 2003
Sample and instrument decollement, mega-splay, and wall rock of lower prism to address
fault rheology, slip history, and temporal change objectives.

Site SpecificObjectives with Priority:2
Priority(Must include generalobjectives in proposal)

None
List Previous
Drilling in Area:

Section B: General Site Information
Site Name:
NT3-02A(e.g. SWPAC-01A)

If site is a reoccupationof an old DSDP/ODP
Site, Please include
former Site #Area or Location:

Latitude: Deg: 33

Min: 12.9 N

Jurisdiction:

Longitude: Deg: 136

Min: 27.4 E

Distance to Land:

Coordinates
System:S o u t h w e s t e r nNankai
Trough off Kumano
Within Japanese EEZ
45 NM

WGS 84

Priority of Site: Primary: X

Alt: X

Water Depth:

1,950 mSection C: Operational Information

Proposed
Penetration:(m)

Sediments
5800 - 6000

Basement
200

What is the total sed. thickness? >5,500m
Total Penetration:

6,200

m

General Lithologies:

Slope basin clastic sediments, accreted anddeformed trench turbidites, hemipelagic andpelagic mudstones, pillow basalt.
Coring Plan: Continuous coring may be replaced with LWD logging in intervals(Specify or Circle)

1-2-3-APC VPC*

XCB

MDCB*

PCS RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:

Special Tools

Standard Tools
Neutron-Porosity
Litho-Density

Borehole Televiewer
Nuclear Magnetic
Resonance

Gamma Ray

Geochemical

Resistivity

Side-Wall Core
Sampling

Acoustic
Formation Image

Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:Cuttings Sampling Intervals

150-170 degC

(Riser Holes Only)

LWD
Density-Neutron
Resistivity-Gamma Ray

Formation Fluid Sampling
Borehole Temperature& Pressure
Borehole Seismic

Acoustic

Others (Others ( FMI

)

)

°C

from

1500

m

to

3600

m,

5

m intervals

from

4300

m

to

6200

m,

5

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Drilling/Coring: ???

Logging: ??

Total On-Site: ???

Longterm Borehole Observation Plan/Re-entry Plan

Long-term observatory installation and data telemetry/recording
Hazards/
Weather:

Please check following List of Potential Hazards
Shallow Gas

Hydrocarbon

Complicated Seabed
Condition

Hydrothermal Activity

Soft SeabedLandslide and Turbidity Current

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

Shallow Water Flow

High Temperature
H2S

CO2

High Dip Angle

Ice Conditions

What is your Weather
window? (Preferable periodwith the reasons)

May – August optimal(typhoon risk in lateAugust to September)Form 2 - Site Survey Detail

iSAS/IODP Site Summary Forms:
Please fill out information in all gray boxes

Proposal #:New

Site #: NT3-02A

Data TypeSSP
Requirements

ExistsIn DB

1High resolution
seismic reflection

YES

Deep Penetration
seismic reflection

YES

3

Seismic Velocity†

YES

4

Seismic Grid

YES

5a

Refraction

YES

Details of available data and data that are still to be collected
Primary Line(s)JAMSTEC Line-B (Feb. 2003):Location of Site on line (SP or Time only)

Primary Line(s):KR0108-5, 3Location of Site on line (SP or Time only)

Crossing Lines(s):(surface)

Refraction

Date Form Submitted: Apr. 1, 2003

Crossing Lines(s): JAMSTEC Line-9 (Feb. 2003)

2

5b

RevisedYES

Stacking velocity and PODM migration velocity from MCS lines.
OBS wide-angle data also available.
Acquired by JAMSTEC in Feb. 2003, also IFREE lines from 1998 - 2003
Two-ship COP (max. offset 20km) was obtained by JAMSTEC in Sep.
2002
OBS data by Nakanishi et al. (1997)(near bottom)
Location of Site on line (Time)6

3.5 kHz

NO

7

YES

Multi-narrow beam data by JAMSTEC R/V Yokosuka

YES

Some data collected using IZANAGI side scan sonar

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

11a

8a
8b
9

NO
YES

Taken by submersibles of JASMTEC

YES

Obtained from surface ship, submersibles, long-term monitoring and BSR

Magnetics

YES

Compiled map published from AIST, Japan

11b

Gravity

YES

Compiled map published from AIST, Japan

12
13
14a
14b
15

YES
YES
YES

Gravity and piston cores
Taken by submersible and ROV
Available on JODC web page (http://www.jodc.go.jp/)

YES

Obana et al., in press

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

SSP Classification of Site:
SSP Comments:

YES

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging PlaniSAS/IODP Site Summary Forms:
New

Proposal #:Water Depth (m): 1950

Site #: NT3-01A
Sed. Penetration (m): 6000

Do you need to use the conical side-entry sub (CSES) at this site? Yes
Are high temperatures expected at this site?
Yes
Are there any other special requirements for logging at this site? Yes
If “Yes” Please describe requirements:

RevisedDate Form Submitted: Apr. 1, 2003
Basement Penetration (m): 200
No
No
No

What do you estimate the total logging time for this site to be:
Relevance(1=high, 3=Low)

Measurement Type
Neutron-Porosity

Scientific Objective
Estimation of water content in sedimentary sequences and basement.

1

Litho-Density

Estimation of water content,bulk density,and mineral composition in1

sedimentary sequences and basement.
Natural Gamma Ray

Estimation clay contents and mineral composition in sedimentary1

sequences and basement.
Resistivity-Induction

Estimation of water content and electro-magnetic properties in1

sedimentary sequences and basement.
Acoustic

Yes, dipole sonic, LWD sonic for physical properties

FMS

Preferably FMI & RAB. Imaging of sedimentary structures and1

fractures.Core-log correlation of structural features.
BHTV

Perhaps?

Resistivity-Laterolog

LWD resistivity

Magnetic/Susceptibility

Density-Neutron (LWD)

Estimation of water contents,bulk density,and lithology in unstable1

borehole environments.
Resitivity-Gamma

Ray

Estimation of water contents,bulk density,and lithology in unstable(LWD)

borehole environments.

Other: Special tools (CORK,

RAB, VSP

PACKER, VSP, PCS, FWS,

Hydrofracturing, Packer injection test

WSP

Geodetic/Seismic and multi-level packer borehole observatory

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

1

1

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

iSAS/IODP Site Summary Forms:

Form 4 – Pollution & Safety Hazard Summary

Please fill out information in all gray boxes

Proposal #:
1

3

4

5

6

7

8

Site #: NT3-01A

Date Form Submitted: Apr. 1, 2003

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information,
list all commercial drilling inthis area that produced or
yielded significant hydrocarbon
shows. Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?
Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.
What “special” precautions will
be taken during drilling?

What abandonment procedures
do you plan to follow:
Please list other natural ormanmade hazards which may
effect ship’s operations:

APC to refusal,then XCB to refusal.RCB to 6200 m or 200 m into basement.

JNOC will conduct BSR drilling in eastern Nankai in 2004. This data will be used forour program.

None

Yes, MCS profile shows BSRs

Except for normal gas hydrate occurrence, none.

Fault zones are likely unstable and overpressured, prone to collapse, possible pressure
kicks.

Unknown at this time for riser operations

Strong Kuroshio current, typhoon (June – October)(e.g. ice, currents, cables)

9

Revised

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)

2

New

Summary: What do you
consider the major risks indrilling at this site?

Current, shallow overpressure (but latter is probably not major

Form 5 – Lithologic Summary

iSAS/IODP Site Summary Forms:
Proposal #:Site #: NT3-01A

Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

200
1000

Unconformity
Unconformity

4500

Fault

6000

fault

Age

Holoc
ene to
Mioce
ne

New

RevisedDate Form Submitted: Apr. 1, 2003

Assumedvelocity(km/sec)

Lithology

Paleoenvironment

1.62.5km/s

Slope
sediments

Accretionary
prism

to
old
accretionaryrocks

Avg. rateof sed.
accum.
(m/My)

Comments

Received 1 April 2005

IODP Proposal Cover SheetNewX Revised603D-Full2

Addendum

Above For Official Use Only

Please fill out information in all gray boxes
Title:The Nankai Trough Seismogenic Zone Experiment: Observatory Science at theReference Sites

Proponent(s):Elizabeth Screaton, Michael Underwood, Demian Saffer, Kelin Wang, Geoff Wheat, Koichiro
Obana, Greg Moore, Kevin Brown, Juichiro Ashi

Keywords:(5 or less)

Subduction inputs; hydrogeology; long-term observatories

Area:

Nankai TroughShikoku Basin

Contact Information:
Contact Person:
Department:
Organization:
AddressTel.:
E-mail:Elizabeth Screaton
Department of Geology
University of Florida
PO Box 112120, 241 Williamson, Gainesville FL 32611 USA(352) 392-4612
Fax: (352) 392-9294
screaton@ ufl.edu
Permission to post abstract on IODP-MI Sapporo Web site:

X

Yes

No

Abstract: (400 words or less)
The NanTroSEIZE Complex Drilling Plan describes a multi-phase strategy to get at the root cause of the transition
from stable sliding to stick-slip fault behavior -- by intersecting the “seismogenic conveyor belt” of Nankai Troughon either side of its up-dip limit of seismicity. With a campaign of coring, logging, downhole measurements, andlong-term observatory science, NanTroSEIZE will test hypotheses concerning the onset of seismogenic behavior
and locking of subduction thrusts. Characterizing the inputs to the seismogenic zone through examination ofreference sites is a vital component of NanTroSEIZE. This revised full proposal outlines scientific rationale andplans for installation of long-term borehole observatories at NantroSEIZE reference sites. Monitoring at theseobservatories serves two distinct purposes. First, the observatories will provide information on material properties
and background geophysical and geochemical conditions. The state of stress and strength of coupling on theplate-boundary fault are acutely sensitive to 3-D variations in pore pressure, and these pore pressures will begreatly affected by the distribution and permeability of turbidites and the permeability of the ocean crust. Second,observatories allow us to detect temporal changes in the geophysical or geochemical conditions and even thematerial properties. Temporal changes include the gradual stress build-up during the interseismic period.
Associated variations in the thermal and hydrological regimes, and episodic seismic and aseismic strain events,
could show how the seismogenic zone adjusts to new conditions caused by the stress build-up, which elevates
predictive understanding of the seismogenic zone. Two reference sites in Shikoku Basin, on a basement high andbasement plain, will show how stratigraphy, basement topography, and thermal structure affect the physical andhydrologic properties of subduction inputs. Each will require a pair of screened intervals: one targeting open
basement and one targeting the overlying sediment. A site located 7 km seaward of the deformation front will
indicate how far pressure and chemistry anomalies are transmitted seaward of the deformation front. CORK
monitoring at the toe of the accretionary prism will isolate temperature and pressure signals in the frontal
décollement from signals in the subducting turbidites. A second shallow observatory at the prism toe will monitor
micro-seismicity and strain. An observatory in Kumano Basin provides an important complement to backgroundand transient data obtained within and seaward of the mega-splay system. This monitoring network will provide avital context for observations within the plate boundary fault system.

603D-Full2
Scientific Objectives: (250 words or less)Coring, logging, and conventional downhole measurements will commence at four reference sites during Phase I and
II of the Nankai Trough Seismogenic Zone Experiment. This proposal describes scientific objectives for long-termborehole observatories to be installed at four of these sites and one additional site. The fundamental objectives of the
proposed observatory science are to map background properties of the incoming sediment and crust and to monitor
temporal changes associated with the seismic cycle. Specific objectives include:(1) Monitor the differences in hydrologic properties and fluid-flow signals where basement highs are subducting
versus where basement plains are subducting.
(2) Determine if, where, and why compartments of excess pore pressure develop seaward of the deformation front; if
present, determine their effect on early-subduction fault dynamics.
(3) Compare hydrologic properties and fluid-flow signals in turbidite sand bodies before and after they have passed
beneath the toe of the accretionary prism Assess the role of these turbidite sand bodies in drainage of deeper
sediments, and impacts of drainage on plate boundary strength.
(4) Monitor hydrologic properties and fluid-flow signals within the frontal décollement zone for rigorous comparison
against properties and flow in subducted sand lenses beneath the décollement.
(5) Determine how basement fluid flow influences margin-scale patterns of heat flow and fluid flow.
(6) Monitor micro-seismicity, strain, and fluid flow response to tectonic events.

Please describe below any non-standard measurements technology needed to achieve the proposed scientific objectives.

Proposed Sites:
Site Name

Position

Water
Depth
(m)

Penetration (m)
Sed

Bsm

Total

NT1-01A

Lat: 32° 44.8878’N
Long: 136° 55.0236’E

3540

460m

40m

500m

NT1-02A

Lat: 32° 47.4996’N
Long: 137° 09.2784’ E

4210

730m

40m

770m

NT1-03A

Lat: 33° 01.23258’N
Long: 136° 47.9485’E

4125

1200m

0m

1200m

NT1-05A

Lat: 33° 01.3482’N
Long: 137° 3.3432’E

4310

1528m

40m

1568m

NT1-06A

Lat: 32° 51.35’N
Long: 137° 17.58’E

4200

990m

40m

1030m

NT2-04A

Lat: 33° 23.4’N,
Long: 136° 34.6’E

1990

1400m
forearcbasin

40m
acoustic
basement

1440m

Brief Site-specific Objectives
One CORK hole with screened
interval in position equivalent toturbidites and sealed basement.
Companion CORK hole with fully
cased sediment & open basement.
One CORK hole with screened
interval in turbidites and sealed
basement. Companion CORK holewith fully cased sediment and open
basement.
CORK monitoring of décollement andturbidites; will not extend tobasement. Monitor micro-seismicity
and strain.
One CORK hole with screened
intervals in turbidites and sealed
basement. Companion CORK holewith fully cased sediment and open
basement.
Alternate to NT1-02A. One CORK
hole with screened interval inturbidites and sealed basement.
Companion CORK hole with fully
cased sediment and open basement.
One CORK hole with screened
intervals in sediments. Monitor
micro-seismicity and strain.

603D-Full2

IODP Site Summary Forms:
Form 1 - General Site Information
Please fill out information in all gray boxes

Revised

New

Revised 7 March 2002

Section A: Proposal Information

Title of Proposal:

Date Form
Submitted:

The Nankai Trough Seismogenic Zone Experiment:
Observatory Science at the Reference Sites
Sept. 30, 2004

One CORK hole with screened interval in turbidites and sealed basement. Companion
CORK hole with fully cased sediment and open basement. Reference site to characterize
Site Specifichydrology of Shikoku Basin strata and upper igneous crust where a bathymetric mound is
Objectives with
underlain by a basement high. Objectives are to show how stratigraphy, basement
Priority
topography, and thermal structure affect the physical and hydrologic properties of(Must include generalsubduction inputs.
objectives in proposal)

List Previous
Drilling in Area:

This site would be a return to NT1-01A, which is proposed to be drilled in
603A-Full2 (NantroSEIZE Reference Sites).

Section B: General Site Information
If site is a reoccupation
NT1-01A
Site Name:(e.g. SWPAC-01A)of an old DSDP/ODP
Site, Please include
former Site #Nankai Trough off Kii
Area or Location:

Latitude: Deg: 32 N

Min: :44.8878

Jurisdiction:

Longitude: Deg: 136 E

Min: 55.0236

Distance to Land:

Coordinates
System:WGS 84,

Priority of Site: Primary:x

Other (Alt:

Japan
130 km to Cape Shiono-Misaki)

Water Depth:

3540 mSection C: Operational Information
Sediments
Proposed
Penetration:(m)

Basement

460

40

What is the total sed. thickness? 460m
Total Penetration: 500

General Lithologies:

Coring Plan:(Specify or check)

Possible silt/mud turbidites and ash layers
Hemipelagic mud and mudstonem

BasaltLimited coring as necessary to confirm screen locations for CORKs
1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

LWD

Neutron-Porosity

Borehole Televiewer

Formation Fluid Sampling

Density-Neutron

Litho-Density

Nuclear Magnetic
Resonance

Borehole Temperature& Pressure

Resistivity-Gamma Ray

Gamma Ray

Geochemical

Borehole Seismic

Acoustic

Limited measurements if needed toSide-Wall Core
Sampling

Resistivity

fill gaps from previous (Phase I)
drilling.

Acoustic
Formation Image

Others (Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:(Riser Holes Only)

Cuttings Sampling Intervals)

Others (

)

°C

from

m

to

m,

m intervals

from

m

to

m,

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Hazards/
Weather:

Drilling/Coring: 5

Logging: 12 (install casing/CORKs) Total On-Site: 17Longterm Borehole Observation Plan/Re-entry PlanLong term monitoring (CORKs) of basement and overlying sediments.
Please check following List of Potential Hazards
Shallow Gas

Complicated Seabed Condition

Hydrothermal Activity

Hydrocarbon

Soft SeabedLandslide and Turbidity Current

Shallow Water Flow

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H 2S

High Dip Angle

Ice Conditions

CO2

What is your Weather
window? (Preferable
period with the reasons)April-July:
Avoid typhoonseasonForm 2 - Site Survey Detail

IODP Site Summary Forms:
Please fill out information in all gray boxes

Proposal #: 603D-Full

Data Type

1

New

Site #: NT1-01A
SSP
Requirements

ExistsIn DB

NoHigh resolution
seismic reflection

Date Form Submitted: Sept. 30, 2004

Details of available data and data that are still to be collected
Primary Line(s):Location of Site on line (SP or Time only)

Crossing Lines(s):Yes

2RevisedDeep Penetration
seismic reflection

Primary Line(s): KR9806-2 SP2710

Location of Site on line (SP or Time only)

Crossing Lines(s): KR0211-S0

3

Seismic Velocity†Yes

4

Seismic Grid

Yes

Refraction

Yes

Two ship COP (maximum offset 20 km) obtained by JAMSTEC.

Yes

OBS data by Nakanishi et al. (1997)

5a

Stacking velocity and migration velocity from MCS lines. OBS data.

(surface)

5b

Refraction(near bottom)

Location of Site on line (Time)6

3.5 kHz

7

No

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

11a

Magnetics

Yes

Compiled map published from AIST, Japan.

11b

GravityYesCompiled map published from AIST, Japan.

12
13
14a
14b
15

No
No

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

SSP Classification of Site:
SSP Comments:

Yes

Multi-narrow-beam data by JAMSTEC R/V Yokusuka.

No

No
Yes.

Available on JODC web page (http://www.jodc.go.jp)
Yes
Yes

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging Plan

IODP Site Summary Forms:
New

Proposal #: 603D-Full
Water Depth (m): 3540

Site #: NT1-01A
Sed. Penetration (m): 460

RevisedDate Form Submitted: Sept. 30, 2004
Basement Penetration (m): 40

Do you need to use the conical side-entry sub (CSES) at this site? Yes

No

Are high temperatures expected at this site?

Yes

No

Are there any other special requirements for logging at this site?

Yes

No

If “Yes” Please describe requirements:No logging planned. Site will have been logged in previous phase.
CORK installation only
What do you estimate the total logging time for this site to be: 12 days install casing/CORKS
Relevance
Measurement Type
Neutron-Porosity

Scientific Objective(1=high, 3=Low)

Litho-Density
Natural Gamma Ray
Resistivity-Induction
Acoustic
FMS
BHTV
Resistivity-Laterolog
Magnetic/Susceptibility
Density-Neutron (LWD)
Resitivity-Gamma

Ray

(LWD)
Other: Special tools (CORK,
PACKER, VSP, PCS, FWS,

CORK

WSP

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

Form 4 – Pollution & Safety Hazard Summary

IODP Site Summary Forms:
New

Please fill out information in all gray boxes

Proposal #: 603D-Full1

3

4

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information,
list all commercial drilling inthis area that produced or
yielded significant hydrocarbon
shows. Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?

RCB with limited coring to confirm monitoring intervals for CORK. CORK installation

None

None

No

5

Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.

6

What “special” precautions will
be taken during drilling?

None

What abandonment procedures
do you plan to follow:

None. Holes will be CORKed.

7
8

Please list other natural ormanmade hazards which may
effect ship’s operations:

No

Strong Kuroshio current. Typhoon season (June to Oct)(e.g. ice, currents, cables)

9

Date Form Submitted: Sept. 30, 2004

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT1-01A

Revised

Summary: What do you
consider the major risks indrilling at this site?

Current

Form 5 – Lithologic Summary

IODP Site Summary Forms:

New

Revised
New

Proposal #: 603D-Full
Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

Site #: NT1-01A

Ageseafloor
460

Unconformity

560

Total depth

20 Ma

Date Form Submitted: Sept. 30, 2004

Assumedvelocity(km/sec)

Lithology

Paleo-environment

1.6-1.9

Hemipelagite

Backarc basin
Floor

2.0

Volcanic
sediment andbasement basalt

Backarc basin
spreading ridge

Avg. rateof sed.
accum.
(m/My)
23 m/myComments

603D-Full2

IODP Site Summary Forms:
Form 1 - General Site Information
Please fill out information in all gray boxes

Revised

New

Revised 7 March 2002

Section A: Proposal Information

Title of Proposal:

Date Form
Submitted:

The Nankai Trough Seismogenic Zone Experiment:
Observatory Science at the Reference Sites
Sept. 30, 2004

One CORK hole with screened interval in turbidites and sealed basement.
Companion CORK hole with fully cased sediment and open basement. Reference
Site SpecificObjectives with site to characterize hydrology of Shikoku Basin strata and upper igneous crust
Priority where basement topography is relatively flat. Objectives are to document how(Must include general stratigraphy, basement topography, and thermal structure affect the physical andobjectives in proposal) hydrologic properties of subduction inputs.

List Previous
Drilling in Area:

This site would be a return to NT1-02A, which is proposed to be drilled in
603A-Full2 (NantroSEIZE Reference Sites).

Section B: General Site Information
If site is a reoccupation
NT1-02A
Site Name:(e.g. SWPAC-01A)of an old DSDP/ODP
Site, Please include
former Site #Latitude: Deg: 32 N

Min: :47.4996

Longitude: Deg: 137 E

Min: 9.2784

Coordinates
System:WGS 84,

Priority of Site: Primary:x

Other (
Alt:

Nankai Trough off Kii
Area or Location:

Jurisdiction:
Distance to Land:Japan
145 km to Cape Shiono-Misaki)

Water Depth:

4210 mSection C: Operational Information
Sediments
Proposed
Penetration:(m)

Basement

730

40

What is the total sed. thickness? 730

m
Total Penetration: 770

General Lithologies:

Coring Plan:(Specify or check)

Possible silt/mud turbidites and ash layers
Hemipelagic mud and mudstonem

BasaltLimited coring as necessary to confirm screen locations for CORKs
1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

LWD

Neutron-Porosity

Borehole Televiewer

Formation Fluid Sampling

Density-Neutron

Litho-Density

Nuclear Magnetic
Resonance

Borehole Temperature& Pressure

Resistivity-Gamma Ray

Gamma Ray

Geochemical

Borehole Seismic

Acoustic

Limited measurements if needed toSide-Wall Core
Sampling

Resistivity

fill gaps from previous (Phase I)
drilling.

Acoustic
Formation Image

Others (Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:(Riser Holes Only)

Cuttings Sampling Intervals)

Others (

)

°C

from

m

to

m,

m intervals

from

m

to

m,

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Hazards/
Weather:

Drilling/Coring: 6 days

Logging: 12 (install casing/CORKs) Total On-Site: 18 days

Longterm Borehole Observation Plan/Re-entry PlanLong term monitoring (CORKs) of basement and overlying sediments.
Please check following List of Potential Hazards
Shallow Gas

Complicated Seabed Condition

Hydrothermal Activity

Hydrocarbon

Soft SeabedLandslide and Turbidity Current

Shallow Water Flow

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H 2S

High Dip Angle

Ice Conditions

CO2

What is your Weather
window? (Preferable
period with the reasons)April-July:
Avoid typhoonseasonForm 2 - Site Survey Detail

IODP Site Summary Forms:
Please fill out information in all gray boxes

Proposal #: 603D-Full

Data Type

1

New

Site #: NT1-02A
SSP
Requirements

ExistsIn DB

NoHigh resolution
seismic reflection

Date Form Submitted: Sept. 30, 2004

Details of available data and data that are still to be collected
Primary Line(s):Location of Site on line (SP or Time only)

Crossing Lines(s):Yes

2RevisedDeep Penetration
seismic reflection

Primary Line(s): KR9806-1 SP1740

Location of Site on line (SP or Time only)

Crossing Lines(s): KR0211-S0 nearby

3

Seismic Velocity†Yes

4

Seismic Grid

Yes

Refraction

Yes

Two ship COP (maximum offset 20 km) obtained by JAMSTEC.

Yes

OBS data by Nakanishi et al. (1997)

5a

Stacking velocity and migration velocity from MCS lines. OBS data.

(surface)

5b

Refraction(near bottom)

Location of Site on line (Time)6

3.5 kHz

7

No

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

11a

Magnetics

Yes

Compiled map published from AIST, Japan.

11b

GravityYesCompiled map published from AIST, Japan.

12
13
14a
14b
15

No
No

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

SSP Classification of Site:
SSP Comments:

Yes

Multi-narrow-beam data by JAMSTEC R/V Yokusuka.

No

No
Yes.

Available on JODC web page (http://www.jodc.go.jp)
Yes
Yes

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging Plan

IODP Site Summary Forms:
New

Proposal #: 603D-Full
Water Depth (m): 4210

Site #: NT1-02A
Sed. Penetration (m): 730

RevisedDate Form Submitted: Sept. 30, 2004
Basement Penetration (m): 40

Do you need to use the conical side-entry sub (CSES) at this site? Yes

No

Are high temperatures expected at this site?

Yes

No

Are there any other special requirements for logging at this site?

Yes

No

If “Yes” Please describe requirements:No logging planned. Site will have been logged in previous phase.
CORK installation only
What do you estimate the total logging time for this site to be: 12 days (CORK/casing install)
Relevance
Measurement Type
Neutron-Porosity

Scientific Objective(1=high, 3=Low)

Litho-Density
Natural Gamma Ray
Resistivity-Induction
Acoustic
FMS
BHTV
Resistivity-Laterolog
Magnetic/Susceptibility
Density-Neutron (LWD)
Resitivity-Gamma

Ray

(LWD)
Other: Special tools (CORK,
PACKER, VSP, PCS, FWS,

CORK

WSP

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

Form 4 – Pollution & Safety Hazard Summary

IODP Site Summary Forms:
New

Please fill out information in all gray boxes

Proposal #: 603D-Full1

3

4

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information,
list all commercial drilling inthis area that produced or
yielded significant hydrocarbon
shows. Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?

5

Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.

6

What “special” precautions will
be taken during drilling?

78

What abandonment procedures
do you plan to follow:
Please list other natural ormanmade hazards which may
effect ship’s operations:

RCB with limited coring to confirm monitoring intervals for CORK. CORK installation

None

None

No
No

May need casing of sandy turbidites prior to basement drilling/basement CORK
installation.
None. Holes will be CORKed.
Strong Kuroshio current. Typhoon season (June to Oct)(e.g. ice, currents, cables)

9

Date Form Submitted: Sept. 30, 2004

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT1-02A
NT1-01A

Revised

Summary: What do you
consider the major risks indrilling at this site?

Current

Form 5 – Lithologic Summary

IODP Site Summary Forms:

New

Revised
New

Proposal #: 603D-Full
Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

Site #: NT1-02A

Age

seafloor
730

830

Assumedvelocity(km/sec)
1.6-1.9

Unconformity

Total depth

20 Ma

Date Form Submitted: Sept. 30, 2004

Lithology

Paleo-environment

Hemipelagite
and turbidites

Backarc basin
Floor

Volcanic
sediment andbasement basalt

Backarc basin
spreading ridge

2.0

Avg. rateof sed.
accum.
(m/My)
36 m/myComments
Heterogeneous
stratigraphy withirregular packets ofturbidite sand.

603D-Full2

IODP Site Summary Forms:
Form 1 - General Site Information
Please fill out information in all gray boxes

Revised

New

Revised 7 March 2002

Section A: Proposal Information

Title of Proposal:

Date Form
Submitted:

The Nankai Trough Seismogenic Zone Experiment:
Observatory Science at the Reference Sites
Sept. 30, 2004

Reference site to characterize hydrology of decollement and underlying turbidites
at the toe of the accretionary prism and to monitor micro-seismicity and strain.
Site SpecificObjectives with Objectives are to install CORK to monitor hydrologic properties and fluid-flow
Priority signals within and below the frontal décollement zone.
(Must include generalobjectives in proposal)

List Previous
Drilling in Area:

This site would be a return to NT1-03A, which is proposed to be drilled in
603A-Full2 (NantroSEIZE Reference Sites).

Section B: General Site Information
If site is a reoccupation
NT1-03A
Site Name:(e.g. SWPAC-01A)of an old DSDP/ODP
Site, Please include
former Site #Nankai Trough off Kii
Area or Location:

Latitude: Deg: 33 N

Min: 1.23258

Jurisdiction:

Longitude: Deg: 136 E

Min: 47.94852

Distance to Land:

Coordinates
System:WGS 84,

Priority of Site: Primary:x

Other (Alt:

Japan
100 km to Cape Shiono-Misaki)

Water Depth:

4125 mSection C: Operational Information
Sediments
Proposed
Penetration:(m)

Basement

1200
What is the total sed. thickness? 1740m
Total Penetration: 1200

General Lithologies:

Coring Plan:(Specify or check)

Silt and sand turbidites, ash
hemipelagic mud and mudstonemlayers,Limited coring as necessary to confirm screen locations for CORKs
1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

LWD

Neutron-Porosity

Borehole Televiewer

Formation Fluid Sampling

Density-Neutron

Litho-Density

Nuclear Magnetic
Resonance

Borehole Temperature& Pressure

Resistivity-Gamma Ray

Gamma Ray

Geochemical

Borehole Seismic

Acoustic

Limited measurements if needed toSide-Wall Core
Sampling

Resistivity

fill gaps from previous (Phase I)
drilling.

Acoustic
Formation Image

Others (Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:(Riser Holes Only)

Cuttings Sampling Intervals)

Others (

)

°C

from

m

to

m,

m intervals

from

m

to

m,

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Hazards/
Weather:

Drilling/Coring: 6 days

Logging:12 (install casing/CORKs)

Total On-Site: 18 days

Longterm Borehole Observation Plan/Re-entry PlanLong term monitoring (CORKs) of turbidites and decollement.
Please check following List of Potential Hazards
Shallow Gas

Complicated Seabed Condition

Hydrothermal Activity

Hydrocarbon

Soft SeabedLandslide and Turbidity Current

Shallow Water Flow

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H 2S

High Dip Angle

Ice Conditions

CO2

What is your Weather
window? (Preferable
period with the reasons)April-July:
Avoid typhoonseasonForm 2 - Site Survey Detail

IODP Site Summary Forms:
Please fill out information in all gray boxes

Proposal #: 603D-Full

Data Type

1

New

Site #: NT1-03A
SSP
Requirements

ExistsIn DB

NoHigh resolution
seismic reflection

Date Form Submitted: Sept. 30, 2004

Details of available data and data that are still to be collected
Primary Line(s):Location of Site on line (SP or Time only)

Crossing Lines(s):Yes

2RevisedDeep Penetration
seismic reflection

Primary Line(s): KR0108-4 SP16550

Location of Site on line (SP or Time only)

Crossing Lines(s):3Seismic Velocity†Yes

4

Seismic Grid

Yes

Refraction

Yes

Two ship COP (maximum offset 20 km) obtained by JAMSTEC.

Yes

OBS data by Nakanishi et al. (1997)

5a

Stacking velocity and migration velocity from MCS lines. OBS data.

(surface)

5b

Refraction(near bottom)

Location of Site on line (Time)6

3.5 kHz

7

No

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

11a

Magnetics

Yes

Compiled map published from AIST, Japan.

11b

GravityYesCompiled map published from AIST, Japan.

12
13
14a
14b
15

No
No

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

SSP Classification of Site:
SSP Comments:

Yes

Multi-narrow-beam data by JAMSTEC R/V Yokusuka.

No

No
Yes.

Available on JODC web page (http://www.jodc.go.jp)
Yes
Yes

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging Plan

IODP Site Summary Forms:
New

Proposal #: 603D-Full
Water Depth (m): 4125

Site #: NT1-03A
Sed. Penetration (m): 1200

RevisedDate Form Submitted: Sept. 30, 2004
Basement Penetration (m): 0

Do you need to use the conical side-entry sub (CSES) at this site? Yes

No

Are high temperatures expected at this site?

Yes

No

Are there any other special requirements for logging at this site?

Yes

No

If “Yes” Please describe requirements:No logging planned. Site will have been logged in previous phase.
CORK installation only
What do you estimate the total logging time for this site to be: 12 days (CORK/casing install)
Relevance
Measurement Type
Neutron-Porosity

Scientific Objective(1=high, 3=Low)

Litho-Density
Natural Gamma Ray
Resistivity-Induction
Acoustic
FMS
BHTV
Resistivity-Laterolog
Magnetic/Susceptibility
Density-Neutron (LWD)
Resitivity-Gamma

Ray

(LWD)
Other: Special tools (CORK,
PACKER, VSP, PCS, FWS,

CORK

WSP

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

Form 4 – Pollution & Safety Hazard Summary

IODP Site Summary Forms:
New

Please fill out information in all gray boxes

Proposal #: 603D-Full
1

3

4

Date Form Submitted: Sept. 30, 2004

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT1-03A

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information,
list all commercial drilling inthis area that produced or
yielded significant hydrocarbon
shows. Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?

RCB with limited coring to confirm monitoring intervals for CORK. CORK installation

None

None

No

5

Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.

6

What “special” precautions will
be taken during drilling?

May need shallow casing to to stabilize sandy turbidites.

What abandonment procedures
do you plan to follow:

None. Holes will be CORKed.

7
8

Please list other natural ormanmade hazards which may
effect ship’s operations:

No

Strong Kuroshio current. Typhoon season (June to Oct)(e.g. ice, currents, cables)

9

Revised

Summary: What do you
consider the major risks indrilling at this site?

Current, instability of accreted trench turbidites.

Form 5 – Lithologic Summary

IODP Site Summary Forms:

New

Revised
New

Proposal #: 603D-Full
Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

Site #: NT1-03A

Age

Assumedvelocity(km/sec)

seafloor

Date Form Submitted: Sept. 30, 2004

Lithology

Paleo-environment

1.5

Hemipelagite +volcanic ash

Upper Shikoku
Basin
Trench wedge

230

Fault

Quaternary

1.6-1.8

turbidites

790

Reflector

Pleistocene

1.9

hemipelagite
and volcanic
ash

Upper
Basin

Shikoku

1000

Reflector

PlioMioce
nehemipelagite +turbidite

Lowe
Basin

Shikoku

1200

Total depth

2.4

Avg. rateof sed.
accum.
(m/My)

Comments

Probably contains
thick layers ofunconsolidated sands.

Heterogeneous
stratigraphy withirregular packets ofsand or sandstone

603D-Full2

IODP Site Summary Forms:
Form 1 - General Site Information
Please fill out information in all gray boxes

Revised

New

Revised 7 March 2002

Section A: Proposal Information

Title of Proposal:

Date Form
Submitted:

The Nankai Trough Seismogenic Zone Experiment:
Observatory Science at the Reference Sites
Sept. 30, 2004

One CORK hole with screened interval in turbidites and sealed basement.
Companion CORK hole with fully cased sediment and open basement. Objectives
Site SpecificObjectives with are to document variations in turbidite and basement fluid flow between NT1-02A
Priority and deformation front.
(Must include generalobjectives in proposal)

List Previous
Drilling in Area:

No scientific drilling in immediate vicinity. DSDP 87, ODP 131, 190, and 196
were conducted about 200 km SW of this proposal’s sites.

Section B: General Site Information
NT1-05A
If site is a reoccupation
NT1-04B
Site Name:(e.g. SWPAC-01A)of an old DSDP/ODP
Site, Please include
former Site #Nankai Trough off Kii
Area or Location:

Latitude: Deg: 33 N

Min: 01.3482

Jurisdiction:

Longitude: Deg: 137 E

Min: 3.3432

Distance to Land:

Coordinates
System:WGS 84,

Priority of Site: Primary:

Other (
Alt:x

Japan
120 km to Cape Shiono-Misaki)

Water Depth:

4310 mSection C: Operational Information
Sediments
Proposed
Penetration:(m)

Basement

1528

40

What is the total sed. thickness? 1528m
Total Penetration: 1568

General Lithologies:

Coring Plan:(Specify or check)

Possible silt/mud turbidites and ash layers
Hemipelagic mud and mudstonem

Basalt

APC/XCB to refusal, RCB to TD.
1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

LWD

Neutron-Porosity

Borehole Televiewer

Formation Fluid Sampling

Density-Neutron

Litho-Density

Nuclear Magnetic
Resonance

Borehole Temperature& Pressure

Resistivity-Gamma Ray

Gamma Ray

Geochemical

Borehole Seismic

Acoustic

Side-Wall Core

Resistivity

Sampling

Acoustic
Formation Image

Others (Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:(Riser Holes Only)

Cuttings Sampling Intervals)

Others (

)

°C

from

m

to

m,

m intervals

from

m

to

m,

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Hazards/
Weather:

Logging: 7 logging,
12 CORK/casing
Longterm Borehole Observation Plan/Re-entry Plan
Drilling/Coring: 18 days

Total On-Site: 37 days

Long term monitoring (CORKs) of basement and overlying sediments.
Please check following List of Potential Hazards
Shallow Gas

Complicated Seabed Condition

Hydrothermal Activity

Hydrocarbon

Soft SeabedLandslide and Turbidity Current

Shallow Water Flow

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H 2S

High Dip Angle

Ice Conditions

CO2

What is your Weather
window? (Preferable
period with the reasons)April-July:
Avoid typhoonseasonForm 2 - Site Survey Detail

IODP Site Summary Forms:
Please fill out information in all gray boxes

Proposal #: 603D-Full

Data Type1New

NT1-05A
Site #: NT1-04A
SSP
Requirements

ExistsIn DB

NoHigh resolution
seismic reflection

Date Form Submitted: Sept. 30, 2004

Details of available data and data that are still to be collected
Primary Line(s):Location of Site on line (SP or Time only)

Crossing Lines(s):Yes

2RevisedDeep Penetration
seismic reflection

Primary Line(s): KR9806-1 SP2922

Location of Site on line (SP or Time only)

Crossing Lines(s): KY0314-100 SP 3558

3

Seismic Velocity†Yes

4

Seismic Grid

Yes

Refraction

Yes

Two ship COP (maximum offset 20 km) obtained by JAMSTEC.

Yes

OBS data by Nakanishi et al. (1997)

5a

Stacking velocity and migration velocity from MCS lines. OBS data.

(surface)

5b

Refraction(near bottom)

Location of Site on line (Time)6

3.5 kHz

7

No

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

11a

Magnetics

Yes

Compiled map published from AIST, Japan.

11b

GravityYesCompiled map published from AIST, Japan.

12
13
14a
14b
15

No
No

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

SSP Classification of Site:
SSP Comments:

Yes

Multi-narrow-beam data by JAMSTEC R/V Yokusuka.

No

No
Yes.

Available on JODC web page (http://www.jodc.go.jp)
Yes
Yes

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging Plan

IODP Site Summary Forms:
New

Proposal #: 603D-Full
Water Depth (m): 4310

NT1-05A
Site #: NT1-04B
Sed. Penetration (m): 1528

RevisedDate Form Submitted: Sept. 30, 2004
Basement Penetration (m): 40

Do you need to use the conical side-entry sub (CSES) at this site? Yes

No

Are high temperatures expected at this site?

Yes

No

Are there any other special requirements for logging at this site?

Yes

No

If “Yes” Please describe requirements:
What do you estimate the total logging time for this site to be: 7 days logging, 12 days CORK/casing install
Relevance
Measurement Type
Neutron-Porosity

Scientific Objective
Estimation of water content in sedimentary sequences and basement.

Litho-Density

Estimation of water content, bulk density, and mineral composition in
sedimentary sequences and basement.

1

Natural Gamma Ray

Estimation of clay contents and mineral composition in sedimentary
sequences and basement.

1

Resistivity-Induction

Estimation of water content and electromagnetic properties in sedimentary
sequence and basement.

1

Acoustic

Determination of in situ velocity and estimation of physical properties.
Comparsion with seismic velocity and create synthetic seismograms.

1

FMS

Imaging of sedimentary structures and fractures. Core-log correlation of
structural features.

2

Density-Neutron (LWD)

Estimation of water contents, bulk density and lithology in unstableborehole environments.

1

Resitivity-Gamma(LWD)

Estimation of water contents, electro-magnetic properties, and lithology inunstable borehole environment.

1(1=high, 3=Low)

1

BHTV
Resistivity-Laterolog
Magnetic/Susceptibility

Ray

Other: Special tools (CORK,
PACKER, VSP, PCS, FWS,
WSP

1Packer: hydrologic tests of sediment + basement
VSP: core-log-seismic integration
CORK: monitoring of sediment P, T, chem

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

Form 4 – Pollution & Safety Hazard Summary

IODP Site Summary Forms:
New

Please fill out information in all gray boxes

Proposal #: 603D-Full1

3

4

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information,
list all commercial drilling inthis area that produced or
yielded significant hydrocarbon
shows. Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?

5

Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.

6

What “special” precautions will
be taken during drilling?

78

What abandonment procedures
do you plan to follow:
Please list other natural ormanmade hazards which may
effect ship’s operations:

APC to refusal, XCB to refusal. RCB to TD, log. CORK installation.

None

None

No
No

May need casing of sandy turbidites prior to basement drilling/basement CORK
installation.
None. Holes will be CORKed.
Strong Kuroshio current. Typhoon season (June to Oct)(e.g. ice, currents, cables)

9

Date Form Submitted: Sept. 30, 2004

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT1-05A
NT1-04B

Revised

Summary: What do you
consider the major risks indrilling at this site?

Current

Form 5 – Lithologic Summary

IODP Site Summary Forms:

New

Revised
New

Proposal #: 603D-Full
Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

Site #: NT1-05A
NT1-04A

Age

seafloor

Assumedvelocity(km/sec)
1.55-2.37

1528

Unconformity

1568

Total depth~20
Ma

Date Form Submitted: Sept. 30, 2004

Lithology

Paleo-environment

Hemipelagite
and turbidites

Backarc basin
Floor

Volcanic
sediment andbasement basalt

Backarc basin
spreading ridge

Avg. rateof sed.
accum.
(m/My)

Comments
Heterogeneous
stratigraphy withirregular packets ofturbidite sand.

1

iSAS/IODP Site Summary Forms:

603D-Full2

Form 1 - General Site Information
Please fill out information in all gray boxes

New

Revised 7 March 2002

RevisedSection A: Proposal Information
Title of Proposal:

NanTroSEIZE Reference Sites:
Sampling and Measuring Inputs to the Seismogenic Zone

Date Form 3/31/05
Submitted:

One CORK hole with screened interval in turbidites and sealed basement.
Companion CORK hole with fully cased sediment and open basement. Reference
Site SpecificObjectives with site to characterize hydrology of Shikoku Basin strata and upper igneous crust
Priority where basement topography is relatively flat. Objectives are to document how(Must include general stratigraphy, basement topography, and thermal structure affect the physical andobjectives in proposal) hydrologic properties of subduction inputs.

List Previous
Drilling in Area:

This site would be a return to NT1-06A, proposed as an alternate to NT1-02A
from proposal 603A-Full2 (NantroSEIZE Reference Sites).

Section B: General Site Information
Site Name:(e.g. SWPAC-01A)

If site is a reoccupationof an old DSDP/ODP
Site, Please include
former Site #NT01-06A

Area or Location:

Latitude: Deg: 32 N

Min: 51.35

Jurisdiction:

Longitude: Deg: 137 E

Min: 17.58

Distance to Land:

Coordinates
System:WGS 84,

Priority of Site: Primary:

Other (

Nankai Trough off Kii

Japan
145 km to Cape Shiono-Misaki)

Alt: X

Water Depth:

4200 m2
Section C: Operational Information
Sediments
Proposed
Penetration:(m)

Basement

990 m

40 m

What is the total sed. thickness? 990

m
Total Penetration: 1030

General Lithologies:

Coring Plan:(Specify or check)

Silt and sand turbidites, ash layers,
hemipelagic mud and mudstonem

BasaltLimited coring as necessary to confirm screen locations for CORKs
1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

LWD

Neutron-Porosity

Borehole Televiewer

Formation Fluid Sampling

Density-Neutron

Litho-Density

Nuclear Magnetic
Resonance

Borehole Temperature& Pressure

Resistivity-Gamma Ray

Gamma Ray

Geochemical

Borehole Seismic

Acoustic

Resistivity

Limited measurements if needed toSide-Wall Core
Sampling

fill gaps from previous (Phase I)
drilling.

Acoustic
Formation Image

Max.Borehole
Temp. :
Mud Logging:(Riser Holes Only)

Others ()

Others ()

Expected value (For Riser°C
Drilling)
Cuttings Sampling Intervals
from

m

to

m,

m intervals

from

m

to

m,

m intervals

Basic Sampling Intervals: 5m
Estimated days:
Future Plan:

Hazards/
Weather:

Drilling/Coring: 7 days

Logging: 12 days (casing/CORK)

Total On-Site: 19 days

Longterm Borehole Observation Plan/Re-entry Plan
CORK observatory
Please check following List of Potential Hazards
Shallow Gas

Complicated Seabed Condition

Hydrothermal Activity

Hydrocarbon

Soft SeabedLandslide and Turbidity Current

Shallow Water Flow

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H2S

High Dip Angle

Ice Conditions

CO2

What is your Weather
window? (Preferable
period with the reasons)April-July :avoid typhoonseason3Form 2 - Site Survey Detail

iSAS/IODP Site Summary Forms:
9.27849.2784
Please fill out information in all gray boxes

Proposal #: 603A-Full

Data TypeSSP
Requirements

ExistsIn DB

High resolution
seismic reflection

Yes

Deep Penetration
seismic reflection

Yes

3

Seismic Velocity†

Yes

4
5a

Seismic Grid
Refraction

Yes
Yes

Details of available data and data that are still to be collected:Location of Site on line (SP or Time only)

odkm03-103-1 SP2860
Crossing Lines(s): odkm03-ACA SP2175
Primary Line(s):2Location of Site on line (SP or Time only)

KR9806-1 nearby
Crossing Lines(s):(surface)

Refraction

RevisedDate Form Submitted: 11/05/04

Primary Line(s)

1

5b

New

Site #: NT01-06A

Yes

KR0211-S0 nearby
Stacking velocity and migration velocity from MCS lines. OBS data

Two ship COP (maximum offset 20 km) obtained by JAMSTEC at the endof September, 2002.
OBS data by Nakanishi et al. (1997)(near bottom)
Location of Site on line (Time)6

3.5 kHz

No

7

Yes

10
11a

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow
Magnetics

Yes
Yes

Compiled map published from AIST, Japan

11b

GravityYesCompiled map published from AIST, Japan

12
13
14a
14b
15

No
No

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

Multi-narrow-beam data by JAMSTEC R/V Yokosuka

No
No
No

Available on JODC web page (http://www.jodc.go.jp)
Yes
Yes

4
Form 3 - Detailed Logging PlaniSAS/IODP Site Summary Forms:
New
Proposal #: 603D-Full2
Water Depth (m): 4200

Site #: NT01-06A
Sed. Penetration (m): 990

RevisedDate Form Submitted: 3/31/05
Basement Penetration (m): 40

Do you need to use the conical side-entry sub (CSES) at this site? Yes
No
Are high temperatures expected at this site?
Yes
No
Are there any other special requirements for logging at this site? Yes
No
If “Yes” Please describe requirements: No logging planned. Site will have been logged in previous phase.
What do you estimate the total logging time for this site to be:

12 days casing CORK install
Relevance

Measurement Type

Other: Special tools (CORK,
PACKER, VSP, PCS, FWS,
WSP

Scientific Objective

CORK(1=high, 3=Low)5iSAS/IODP Site Summary Forms:

Form 4 – Pollution & Safety Hazard Summary

Please fill out information in all gray boxes

New

Proposal #: 603D-Full2
1

3

4
5

6

7
8

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information,
list all commercial drilling inthis area that produced or
yielded significant hydrocarbon
shows. Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?
Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.
What “special” precautions will
be taken during drilling?
What abandonment procedures
do you plan to follow:
Please list other natural ormanmade hazards which may
effect ship’s operations:

RCB with limited coring to confirm monitoring intervals for CORK. CORK
installation
None

None

No
No

Standard monitoring of C 1 to Cn; shallow casing may be needed to stabilize shallow
sandy turbidite layers.
None. Will be CORKed.
Strong Kuroshio current, typhoon (June to Oct.)(e.g. ice, currents, cables)

9

Date Form Submitted: 3/31/05

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT01-06A

Revised

Summary: What do you
consider the major risks indrilling at this site?

Kuroshio Current

6Form 5 – Lithologic Summary

iSAS/IODP Site Summary Forms:
Proposal #: 603D-Full2
Subbottom
depth (m)990

Key reflectors,
Unconformities,
faults, etc

Site #: NT01-06A
Age

Assumedvelocity(km/sec)

Holoceneto lower
Miocene1.6-1.9

20 Ma

2.0

New

RevisedN

Date Form Submitted: 3/31/05
Lithology

Paleoenvironment

Hemipelagite +volcanic ash +turbidites

backarc basin
floor

unconformity
backarc basin
volcanic
sediment andbasement basalt

Avg. rateof sed.
accum.
(m/My)
36 m/My

Comments

Heterogeneous
stratigraphy withirregular packets ofturbidite sand

603D-Full2

IODP Site Summary Forms:
Form 1 - General Site Information
Please fill out information in all gray boxes

Revised

New

Revised 7 March 2002

Section A: Proposal Information

Title of Proposal:

Date Form
Submitted:

The Nankai Trough Seismogenic Zone Experiment:
Observatory Science at the Reference Sites
Sept. 30, 2004

CORK monitoring for material properties, strain, geochemistry seaward of deep
riser hole (NT3-01). Monitoring intervals in clay-rich horizon (for strain) and in
Site SpecificObjectives with sandy horizon (for diffusive signal). Target depths will be refined based on priorPriority drilling.
(Must include generalobjectives in proposal)

List Previous
Drilling in Area:

A which is proposed to be drilled inThis site would be a return to NT2-04B,
603B-Full2.

Section B: General Site Information
If site is a reoccupation
NT2-04A
Site Name:(e.g. SWPAC-01A)of an old DSDP/ODP
Site, Please include
former Site #Kumano Basin off Kii
Area or Location:

Latitude: Deg: 33 N

Min: 23.4
25.1

Jurisdiction:

Longitude: Deg: 136 E

Min: 34.6'
37.5

Distance to Land:

Coordinates
System:WGS 84,

Priority of Site: Primary:x

Other (Alt:

Japan
60 km to Cape Shiono-Misaki)

Water Depth:

19904125 mSection C: Operational Information
Sediments

Basement

Proposed 1400
1450
Penetration:(m) What is the total sed. thickness? 1400

40m
Total Penetration: 1440m

Forearc basin sediment unconformably
laying on acoustic basin of Tertiary acc.
Complex.
Coring Plan: Limited coring as necessary to confirm screen locations for CORKs

General Lithologies:(Specify or check)

1-2-3-APC

VPC*

XCB

MDCB*

PCS

RCB

Re-entry

HRGB* Systems Currently Under Development

Wireline Logging
Plan:Standard Tools

Special Tools

LWD

Neutron-Porosity

Borehole Televiewer

Formation Fluid Sampling

Density-Neutron

Litho-Density

Nuclear Magnetic
Resonance

Borehole Temperature& Pressure

Resistivity-Gamma Ray

Gamma Ray

Geochemical

Borehole Seismic

Acoustic

Resistivity

Side-Wall Core
Sampling

ill gaps from previous (Phase I)

Limited measurements if needed torilling.

Acoustic
Formation Image

Others (Max.Borehole
Temp. :

Expected value (For Riser Drilling)

Mud Logging:(Riser Holes Only)

Cuttings Sampling Intervals)

Others (

)

°C

from

m

to

m,

m intervals

from

m

to

m,

m intervals
Basic Sampling Intervals: 5m

Estimated days:
Future Plan:

Hazards/
Weather:

Drilling/Coring: 4

Logging: 6 casing/CORK install

Total On-Site: 10 days

Longterm Borehole Observation Plan/Re-entry PlanLong term monitoring (CORKs).
Please check following List of Potential Hazards
Shallow Gas

Complicated Seabed Condition

Hydrothermal Activity

Hydrocarbon

Soft SeabedLandslide and Turbidity Current

Shallow Water Flow

Currents

Methane Hydrate

Abnormal Pressure

Fractured Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H 2S

High Dip Angle

Ice Conditions

CO2

What is your Weather
window? (Preferable
period with the reasons)April-July:
Avoid typhoonseasonForm 2 - Site Survey Detail

IODP Site Summary Forms:
Please fill out information in all gray boxes

Proposal #: 603D-Full

Data Type

1

New

Site #: NT2-04A
SSP
Requirements

ExistsIn DB

YesHigh resolution
seismic reflection

2

RevisedDate Form Submitted: Sept. 30, 2004

Details of available data and data that are still to be collected
Primary Line(s)JAMSTEC Line Il1 (Feb. 2003):Location of Site on line (SP or Time only)(Feb.2003)
2003)
Lin (Feb.
Crossing Lines(s): JAMSTEC LineYes
Deep Penetration
seismic reflection

Primary Line(s): KR0108-4

Location of Site on line (SP or Time only)

Crossing Lines(s):3Seismic Velocity†Yes

4

Seismic Grid

Yes

Refraction

Yes

Two ship COP (maximum offset 20 km) obtained by JAMSTEC.

Yes

OBS data by Nakanishi et al. (1997)

5a

Stacking velocity and migration velocity from MCS lines. OBS data.

(surface)

5b

Refraction(near bottom)

6

3.5 kHz

7

No

10

Swath
bathymetrySide-looking
sonar (surface)
Side-looking
sonar (bottom)
Photography
or VideoHeat Flow

11a

Magnetics

Yes

Compiled map published from AIST, Japan.

11b

GravityYesCompiled map published from AIST, Japan.

12
13
14a
14b
15

Yes
No

Gravity and piston cores.

16

Sediment cores
Rock sampling
Water current data
Ice Conditions
OBS
microseismicity
Navigation

17

Other

8a
8b
9

SSP Classification of Site:
SSP Comments:

Location of Site on line (Time)Yes

Multi-narrow-beam data by JAMSTEC R/V Yokusuka.

Yes

Some data collected using IZANAGI side scan sonar.

Yes

Taken by JAMSTEC submersibles.

Yes.

Available on JODC web page (http://www.jodc.go.jp)
Yes
Yes

SSP Watchdog:

Date of Last Review:

X=required; X*=may be required for specific sites; Y=recommended; Y*=may be recommended for specific sites;
R=required for re-entry sites; T=required for high temperature environments; † Accurate velocity information is requiredfor holes deeper than 400m.

Form 3 - Detailed Logging Plan

IODP Site Summary Forms:
New

Proposal #: 603D-Full
Water Depth (m): 1990

Site #: NT2-04A
Sed. Penetration (m): 1400

RevisedDate Form Submitted: Sept. 30, 2004
Basement Penetration (m): 40

Do you need to use the conical side-entry sub (CSES) at this site? Yes

No

Are high temperatures expected at this site?

Yes

No

Are there any other special requirements for logging at this site?

Yes

No

If “Yes” Please describe requirements:No logging planned. Site will have been logged in previous phase.
CORK installation only
What do you estimate the total logging time for this site to be: 6 days (install casing/CORK)
Relevance
Measurement Type
Neutron-Porosity

Scientific Objective(1=high, 3=Low)

Litho-Density
Natural Gamma Ray
Resistivity-Induction
Acoustic
FMS
BHTV
Resistivity-Laterolog
Magnetic/Susceptibility
Density-Neutron (LWD)
Resitivity-Gamma

Ray

(LWD)
Other: Special tools (CORK,
PACKER, VSP, PCS, FWS,

CORK

WSP

For help in determining logging times, please contact the ODP-LDEO Wireline Logging Services groupat:borehole@ldeo.columbia.edu
http://www.ldeo.columbia.edu/BRG/brg_home.html
Phone/Fax: (914) 365-8674 / (914) 365-3182

Note: Sites with greater than 400 m ofpenetration or significant basement
penetration require deployment ofstandard toolstrings.

Form 4 – Pollution & Safety Hazard Summary

IODP Site Summary Forms:
New

Please fill out information in all gray boxes

Proposal #: 603D-Full
1

3

4

Date Form Submitted: Sept. 30, 2004

Summary of Operations at site:(Example: Triple-APC to refusal, XCB
10 m into basement, log as shown on
page 3.)2

Site #: NT2-04A

Based on Previous DSDP/ODP
drilling, list all hydrocarbon
occurrences of greater thanbackground levels. Give natureof show, age and depth of rock:
From Available information,
list all commercial drilling inthis area that produced or
yielded significant hydrocarbon
shows. Give depths and ages ofhydrocarbon-bearing deposits.
Are there any indications of gas
hydrates at this location?

RCB with limited coring to confirm monitoring intervals for CORK to 1450 m. CORK
installation

None

None

Yes, MCS profile shows BSR.

5

Are there reasons to expecthydrocarbon accumulations at
this site? Please give details.

6

What “special” precautions will
be taken during drilling?

May need casing to to stabilize shallow sediments.

What abandonment procedures
do you plan to follow:

None. Holes will be CORKed.

7
8

Please list other natural ormanmade hazards which may
effect ship’s operations:

No

Strong Kuroshio current. Typhoon season (June to Oct)(e.g. ice, currents, cables)

9

Revised

Summary: What do you
consider the major risks indrilling at this site?

Current, instability of shallow sediments.

Form 5 – Lithologic Summary

IODP Site Summary Forms:

New

Revised
New

Proposal #: 603D-Full
Subbottom
depth (m)Key reflectors,
Unconformities,
faults, etc

seafloor

Site #: NT2-04A

Age
Holocene to Latetertiary

1400

Unconformity

1450

Total depth

Assumedvelocity(km/sec)
1.5-2Date Form Submitted: Sept. 30, 2004

Lithology
Turbidites andhemipelagic
sediments

Paleo-environment
Forearc
sediments

basin

Avg. rateof sed.
accum.
(m/My)

Comments