IODP Proposal Cover Sheet932 - Add

Hellenic Arc Volcanic Field

Received for: 2019-10-01

Title

Volcanism and tectonics in an island-arc rift environment (VolTecArc): Christiana-Santorini-Kolumbo marine
volcanic field, Greece

Proponents

Timothy Druitt, Christian Hübscher, Paraskevi Nomikou, Steffen Kutterolf, Dimitrios Papanikolaou, Jan
Behrmann, Philipp Brandl, Ralf Gertisser, Jörg Geldmacher, Emilie Hooft, Stephanos Kilias, Martijn Klaver,Costas Papazachos, Raphael Paris, Paraskevi Polymenakou, David Pyle, Christopher Satow, Masako
Tominaga, Maria Triantaphyllou, Aradhna Tripati

Keywords

Volcanism, tectonics, arc, rift, caldera

Proponent
Affiliation
Country

Area

Hellenic island arc

Proponent Information
Timothy Druitt
University Clermont-Auvergne
France✓⃞ Permission is granted to post the coversheet/site table on www.iodp.org

Abstract
Subduction-related volcanism impacts life and the environment around the edges of continents. Better understanding of
island-arc volcanism and associated hazards requires study of the processes that drive such volcanism, and how thevolcanoes interact with their marine surroundings. What are the links and feedbacks between crustal tectonics, volcanic
activity and magma genesis? What are the dynamics and impacts of submarine explosive volcanism and caldera-forming
eruptions? How do calderas collapse during explosive eruptions, then recover to enter new magmatic cycles? What are thereactions of marine ecosystems to volcanic eruptions?
The Christiana-Santorini-Kolumbo (CSK) volcanic field on the Hellenic Volcanic arc is a unique system for addressing thesequestions. It consists of three large volcanic centres (Christiana, Santorini, Kolumbo), and a line of small submarine cones,
founded on thinned continental crust in a 100-km-long rift zone that cuts across the island arc. The CSK volcanic field isnotable for Santorini caldera and its Late Bronze Age eruption, an iconic event in both volcanology and archaeology.
Kolumbo seamount erupted in 1650, causing many deaths from gas release and tsunami impact. The caldera unrest at
Santorini in 2011-12 raised awareness of eruption threat at this major tourist destination.
The marine rift basins around the CSK field, as well as Santorini caldera, contain volcano-sedimentary fills up to several
hundreds of metres thick, providing rich archives of CSK volcanic products, tectonic evolution, magma genesis and palaeoenvironments accessible only by deep drilling backed up by seismic interpretations. We propose to drill four primary sites in
the rifts basins and two additional primary sites inside Santorini caldera. The science has five main objectives, each with aleading testable hypothesis, and two secondary objectives. The proposal addresses all three science themes, and six of the
fourteen challenges, of the IODP Science plan.
Existing onland volcanological research, sea-floor mapping, shallow coring and dredge sampling, combined with a dense
network of seismic profiles and a recent seismic tomography experiment, make drilling at the CSK volcanic field very timely.
Deep drilling is essential to identify, characterise and interpret depositional packages visible on seismic images, tochemically correlate primary volcaniclastic layers in the rift fills with their source volcanoes, to fill in the many gaps in the
onland volcanic records, to provide a tight chronostratigraphic framework for rift tectonic and sedimentary histories, and tosample deep subsurface microbial life.

Generated: 2020-01-29T22:52:20+00:00

932 - Add
Scientific Objectives
We propose six sites (and associated alternate sites) for deep-sea drilling at the rift-hosted Christiana-Santorini-Kolumbo (CSK) volcanic
field on the Hellenic island arc in Greece, with five primary objectives:
1. Arc volcanism in an active rift environment: To reconstruct the volcanic history of the CSK volcanic field since the Pliocene by exploitinga >3.8 My marine volcano-sedimentary archive [IODP Science Plan challenges 11, 12].
2. The volcano-tectonic connection: To reconstruct the subsidence and tectonic histories of the rift basins, and use the rift as a naturalexperiment for studying the relationship between CSK volcanism and major crustal tectonic events [challenges 11, 12].
3. Arc magmatism in a region of extending crust: To document magma petrogenesis at the CSK volcanic field in space and time, and toseek effects of crustal thinning on magma storage, differentiation and crustal contamination [challenges 8, 11].
4. Unravelling an iconic caldera-forming eruption: To document the processes, products and potential impacts of the late Bronze-Age
eruption of Santorini [challenge 12].
5. Volcanic hazards from submarine silicic eruptions: To study the histories, dynamics and hazards of Kameni and Kolumbo submarine
volcanoes [challenge 12].
Each objective is presented with a leading hypothesis, the testing of which requires ocean drilling and detailed core analysis. We also
include two secondary drilling objectives: 6. Transition from continental to marine environments in the southern Aegean [challenge 11]; 7.
Biological systems reactions to volcanic eruptions and seawater acidification [challenges 5, 6, 7]

Non-standard measurements technology needed to achieve the proposed scientific objectives

Generated: 2020-01-29T22:52:20+00:00

932 - Add
Proposed Sites (Total proposed sites: 19; pri: 6; alt: 13; N/S: 0)

Site Name

CSK-01A(Primary)

CSK-02A(Alternate)

CSK-03A(Primary)

CSK-04A(Alternate)

Position(Lat, Lon)

36.729325.6482

36.7438
25.7146

36.5549
25.4398

36.5728
25.4092

CSK-05B(Primary)

36.4356
25.3806

CSK-06B(Alternate)36.442325.3752

CSK-07B(Primary)

CSK-08B(Alternate)

CSK-09A(Primary)

36.38895
25.41713

36.38161
25.40606

36.5656
25.7613

Water
Depth
(m)

489

488

397

402

385

383

292

293

694

Generated: 2020-01-29T22:52:22+00:00

Penetration (m)Brief Site-specific Objectives
Sed

756

437

566

545

360

360

360

375

585

Bsm

9

10

0

0

0

0

0

0

10

Total

765

CSK-01A targets the plio-quaternay volcano-sedimentary fill of theAnhydros Basin, to the depth of the Alpine basement. The site lies near
the basin axis in a position downstream of Santorini and Kolumbo
Volcanoes. The aim is to use the core (and seismic profiles) toreconstruct the volcanic, sedimentary and tectonic histories of the basin,
and to access a near-continuous time series of volcanism in the area
since rift inception. The hole will transect and characterize all six seismic
packages of the Anhydros rift basin (B1 to B6).

447

CSK-02A targets the plio-quaternay volcano-sedimentary fill of theAnhydros Basin, to the depth of the Alpine basement. The site lies near
the basin axis in a position downstream of Santorini and Kolumbo
Volcanoes. The aim is to use the core (and seismic profiles) toreconstruct the volcanic, sedimentary and tectonic histories of the basin,
and to access a near-continuous time series of volcanism in the area
since rift inception. The hole will transect and characterize all six seismic
packages of the Anhydros rift basin (B1 to B6).

566

CSK-03A lies in the Anhydros Basin on the NW submarine flank ofKolumbo Volcano. The aim is to penetrate four seismically recognizedvolcanic eruption units from Kolumbo (K2, K3, K5 and the thin lateralcontinuation of K1), as well as many eruption units from Santorini. This
will enable characterisation of the products of the Kolumbo eruptions, aswell as construction of a coherent stratigraphy for Santorini and Kolumbo
together. The site is placed sufficiently away from Kolumbo vent in order
to avoid possible coarse, bouldery facies of the eruption units.

545

CSK-04A lies in the Anhydros Basin on the NW submarine flank ofKolumbo Seamount Volcano. The aim is to penetrate seismicallyrecognized volcanic eruption units from Kolumbo, as well as many units
from Santorini. This will enable characterisation of the products of theKolumbo eruptions, as well as construction of a coherent stratigraphy for
Santorini and Kolumbo together. However this site only clearly transects
one Kolumbo eruption unit (K5), and has been replaced by site
CSK-21A, which is better placed for our objectives. We retain CSK-04A,
as it may transect thin distal equivalents of K1-K5.

360

CSK-05B is sited in the northern basin of Santorini caldera. The aim is topenetrate intracaldera seismic units S1, S2, and S3 in order tocharacterise them and confirm (or not) published hypotheses, as well as
to penetrate below unit S3 (probably intracaldera tuff of the LBA
eruption). The hole is located north of a low-velocity seismic anomaly
detected by the PROTEUS seismic tomography experiments andcentered on the focus of caldera floor uplift during the unrest period of
2011-12. It replaces hole CSK-05A in FULL.

360

CSK-06B is sited in the northern basin of Santorini caldera. The aim is topenetrate intracaldera seismic units S1, S2, and S3 in order tocharacterise them and confirm (or not) published hypotheses, as well as
to penetrate below unit S3 (probably intracaldera tuff of the LBA
eruption). It replaces site CSK-06A in FULL.

360

CSK-07B is sited in the southern basin of Santorini caldera. The aim is topenetrate intracaldera seismic units S1, S2, and S3 in order tocharacterise them, as well as to penetrate below unit S3 (probableintracaldera tuff of the LBA eruption). This site is complementary to sites
CSK-05B/06B in the northern caldera basin, as together they will provide
a complete understanding of the caldera fill and collapse history. It
replaces site CSK-07A in FULL.

375

CSK-08B is sited in the southern basin of Santorini caldera. The aim is topenetrate intracaldera seismic units S1, S2, and S3 in order tocharacterise them, as well as to penetrate below unit S3 (probableintracaldera tuff of the LBA eruption). This site is complementary to sites
CSK-05B/06B in the northern caldera basin, as together they will provide
a complete understanding of the caldera fill and collapse history. Site
CSK-08 replaces CSK-08A in FULL.

595

CSK-09A is sited in the Anafi Basin. The aim is to penetrate the entire
volcano-sedimentary fill of this basin as far as the Alpine basement. The
basin potentially records the full volcanic history of Santorini (and any
older centres) since rift inception, but not of Kolumbo Volcano. The holewill reconstruct the subsidence and sedimentary history of this basin, tocompare with that of the Anhydros Basin. It will transect all six seismic
units present in the basin (B1 to B6).

932 - Add
Proposed Sites (Continued; total proposed sites: 19; pri: 6; alt: 13; N/S: 0)

Site Name

CSK-10A(Alternate)

CSK-13A(Primary)

CSK-14A(Alternate)

CSK-15A(Alternate)

CSK-16A(Alternate)

CSK-17A(Alternate)

CSK-18A(Alternate)

CSK-19A(Alternate)

Position(Lat, Lon)

36.5494
25.771436.3243
25.182636.3049
25.1286

36.7320
25.6463

36.5480
25.451736.4339
25.381936.3755
25.394236.5563
25.7503

Water
Depth
(m)

672

489

523

490

372

386

291

688

Generated: 2020-01-29T22:52:22+00:00

Penetration (m)Brief Site-specific Objectives
Sed

367

847

746

790

565

420

380

730

Bsm

10

10

10

10

0

0

0

10

Total

377

CSK-10A is sited in the Anafi Basin. The aim is to penetrate the entire
volcano-sedimentary fill of this basin as far as the Alpine basement. The
basin potentially records the full volcanic history of Santorini (and any
older centres) since rift inception, but not of Kolumbo Volcano. The holewill reconstruct the subsidence and sedimentary history of this basin, tocompare with that of the Anhydros Basin. It will transect the topmost fiveof the six seismic units present in the basin (B2 to B6).

857

CSK-13A is sited in the Christiana Basin. This basin is deeper than the
Anhydros and Anafi Basins, and is located SW of Santorini. Its volcanosedimentary fill potentially records the earlier volcanic history of the CSK
volcanic field (including the products of Christiana and early Santorini),
as well as younger Santorini and possibly Milos Volcano. The hole willpass through alternating volcanic units, including volcaniclastics from
Santorini (marine unitsTh1-3, with three possible pyroclastic flow
deposits Pf1-3), and volcaniclastics from Christiana (Ch1, 2), to the prevolcanic basement.

756

CSK-14A is sited in the Christiana Basin. This basin is deeper than the
Anhydros and Anafi Basins, and is located SW of Santorini. Its volcanosedimentary fill potentially records the earlier volcanic history of the CSK
volcanic field (including the products of Christiana and early Santorini),
as well as younger Santorini and possibly Milos Volcano. The hole willpass through alternating volcanic units, including volcaniclastics from
Santorini (marine unitsTh1-3, with three possible pyroclastic flow
deposits Pf1-3), and volcaniclastics from Christiana (Ch1, 2), to the prevolcanic basement.

800

CSK-15A targets the plio-quaternay volcano-sedimentary fill of theAnhydros Basin, to the depth of the Alpine basement. The site lies near
the basin axis in a position downstream of Santorini and Kolumbo
Volcanoes. The aim is to use the core (and seismic profiles) toreconstruct the volcanic, sedimentary and tectonic histories of the basin,
and to access a near-continuous time series of volcanism in the area
since rift inception. The hole will transect and characterize all six seismic
packages of the Anhydros rift basin (B1 to B6).

565

CSK-16A lies in the Anhydros Basin on the NW submarine flank ofKolumbo Volcano. The aim is to penetrate four seismically recognizedvolcanic eruption units from Kolumbo (K2, K3, K5 and the thin lateralcontinuation of K1), as well as many eruption units from Santorini. This
will enable characterisation of the products of the Kolumbo eruptions, aswell as construction of a coherent stratigraphy for Santorini and Kolumbo
together.

420

CSK-17A is sited in the northern basin of Santorini caldera. The aim is topenetrate intracaldera seismic units S1, S2, and S3 in order tocharacterise them and confirm (or not) published hypotheses, as well as
to penetrate below unit S3 (probably intracaldera tuff of the LBA
eruption). The hole is located north of a low-velocity seismic anomaly
detected by the PROTEUS seismic tomography experiments andcentered on the focus of caldera floor uplift during the unrest period of
2011-12.

380

CSK-18A is sited in the southern basin of Santorini caldera. The aim is topenetrate intracaldera seismic units S1, S2, and S3 in order tocharacterise them, as well as to penetrate below unit S3 (probableintracaldera tuff of the LBA eruption). This site is complementary to sites
in the northern caldera basin, as together they will provide a complete
understanding of the caldera fill and collapse history.

740

CSK-19A is sited in the Anafi Basin. The aim is to penetrate the entire
volcano-sedimentary fill of this basin as far as the Alpine basement. The
basin potentially records the full volcanic history of Santorini (and any
older centres) since rift inception, but not of Kolumbo Volcano. The holewill reconstruct the subsidence and sedimentary history of this basin, tocompare with that of the Anhydros Basin. It will transect all six seismic
units present in the basin (B1 to B6).

932 - Add
Proposed Sites (Continued; total proposed sites: 19; pri: 6; alt: 13; N/S: 0)

Site Name

CSK-20A(Alternate)

CSK-21A(Alternate)

Position(Lat, Lon)

36.3127
25.150136.5068
25.5053

Water
Depth
(m)

515

309

Generated: 2020-01-29T22:52:22+00:00

Penetration (m)Brief Site-specific Objectives
Sed

899

730

Bsm

10

0

Total

909

CSK-20A is sited in the Christiana Basin. This basin is deeper than the
Anhydros and Anafi Basins, and is located SW of Santorini. Its volcanosedimentary fill potentially records the earlier volcanic history of the CSK
volcanic field (including the products of Christiana and early Santorini),
as well as younger Santorini and possibly Milos Volcano. The hole willpass through alternating volcanic units, including volcaniclastics from
Santorini (marine units Th1-3, with three possible pyroclastic flow
deposits Pf1-3), and volcaniclastics from Christiana (Ch1, 2), to the prevolcanic basement.

730

CSK-21A lies in the Anhydros Basin on the SE submarine flank ofKolumbo Seamount Volcano. The aim is to penetrate seismicallyrecognized volcanic eruption units from Kolumbo (K1, K3, K5), as well as
many units from Santorini. This will enable characterisation of the
products of the Kolumbo eruptions, as well as construction of a coherent
stratigraphy for Santorini and Kolumbo together.

932 - Add
Contact Information
Contact Person: Timothy Druitt
Department: Laboratoire Magmas et Volcans
Organization: Clermont-Auvergne University
Address: 6 Avenue Blaise Pascal
Clermont-Ferrand Auvergne Rhone Alpes 63178 France
E-mail/Phone: tim.druitt@uca.fr;

Phone: 0033 4 7334 6718

Proponent List
First Name

Last Name

Affiliation

Country

Role

Expertise

Timothy

Druitt

University Clermont-Auvergne

FrancePrincipal
Lead

ChristianHübscher

University of Hamburg

Germany

Data Lead

Marine seismology

Paraskevi

Nomikou

University of Athens

GreeceOther Lead

Marine geology

Steffen

Kutterolf

GeomarGermany

Other Lead

Marine sedimentology
and tephra

Dimitrios

Papanikolaou

University of Athens

GreeceOther Lead

Tectonics

Jan

Behrmann

GeomarGermany

Other
Proponent

Tectonics

Philipp

Brandl

GeomarGermany

Other
Proponent

Petrology andgeochemistry

Ralf

Gertisser

University of Keele

United Kingdom

Other
Proponent

Petrology andgeochemistry

Jörg

Geldmacher

GeomarGermany

Other
Proponent

Geochemistry andgeochronology

EmilieHooft

University of Oregon

United States

Other
Proponent

Marine seismology

Stephanos

Kilias

University of Athens

GreeceOther
Proponent

Biomineralization

Martijn

KlaverUniversity of Bristol

United Kingdom

Other
Proponent

Isotope geochemistry

CostasPapazachos

Aristotle University

GreeceOther
Proponent

Seismology

RaphaelParis

University Clermont Auvergne

FranceOther
Proponent

Textural analysis

Paraskevi

Polymenakou

HCMR

GreeceOther
Proponent

Microbiology

David

Pyle

University of Oxford

United Kingdom

Other
Proponent

Volcanology

Christopher

Satow

Oxford Brookes University

United Kingdom

Other
Proponent

Marine sedimentology
and tephra

MasakoTominaga

Texas A&M University

United States

Other
Proponent

Marine geophysics andmagnetometry

Maria

Triantaphyllou

University of Athens

GreeceOther
Proponent

Marinemicropalaeontology

Aradhna

Tripati

UCLA

United States

Other
Proponent

Stable isotope
geochemistry

Generated: 2020-01-29T22:52:20+00:00

Volcanology

Addendum – IODP proposal 932-ADD
Volcanism and tectonics in an island-arc rift environment (VolTecArc):
Christiana-Santorini-Kolumbo marine volcanic field, Greece

Science objectives, hypotheses, and strategies
The scientific objectives and strategies of this addendum remain identical to those in 932FULL. The proponent team also remains unchanged. The revised drill site map is shown in
Figure 1.

New site characterisation data
A total of 620 km of new, high-quality, multichannel seismic profiles were successfully shotin October of 2019 on the German ship RV Poseidon (cruise POS538), under the leadershipof Dr. Jens Karstens (Figure 2; Table 1). These have enabled us to place all drill sites on crosspoints and to obtain new profiles for the Christiana Basin. These new profiles are listed in
the text and Table 2 as GEOMAR_Pxxxx.
At the request of the SEP, we obtained a cross profile for sites CSK-01A and CSK-02A.
The original drill sites for the Christiana Basin (sites CSK-11A and CSK-12A in 932-FULL),
proved to be inappropriate since major slumping is clearly visible on our new profiles.
Indeed these sites were based on previously published profiles (Tsampouraki-Kraounaki etal. 2018), not our own. We therefore shot a series of profiles in another part of the basin,
NW of Christiana Volcano, and found perfect new primary (CSK-13A) and alternate (CSK-14A,
CSK-20A) sites in an area of undisturbed stratigraphy (Figure 3).

Re-processing and its effects on the profiles
All used seismic data have been processed at University of Hamburg with Schlumberger’s
VISTA system. The reprocessing is described fully in the uploaded file
“Reprocessing_Report.pdf”. All uploaded re-processed SEG-Ys have the extension “REPROC”. The enhanced resolution is illustrated by the data in Figure 4.

1

Drill sites
Primary drill sites CSK-01A, 03A and 09A are the same as in 932-FULL. Primary sites CSK-05A
and CSK-07A have been very slightly moved and renamed CSK-05B and CSK-07B.
The new primary site in the Christiana Basin CSK-13A replaces CSK-11A. It is situated
NE of Christiana on seismic profiles that reveal a much more coherent stratigraphy, including
units interpreted as derived from Christiana and Santorini (Figure 4).
Alternate sites CSK-02A, CSK-04A and CSK-10A are the same as in 932-FULL. Alternate
site CSK-04B has been renamed CSK-21A at the request of the IODP proposal manager.
Alternate sites CSK-06A and CSK-08A have been very slightly moved and renamed CSK-06B
and CSK-08B. Site CSK-14A is a new alternate to CSK-13A.
At SEP’s request, we have also added an additional alternate site for each of the six
primary drill sites (new sites CSK-15A to CSK-20A). Our approach has been to choose a site afew hundred metres along seismic profile from the primary site. The justification for this isthat the primary sites were chosen as being ideal for the science, and so it is logical to stayreasonably close to these. These ‘additional alternate’ sites are not all at crossing points, butthey lie on at least one seismic profile and near the crossing point of the corresponding
primary site.
We have not assigned priorities to the different alternates, since the choice between
them would depend on the nature of any problem associated with the primary site.
All sites are in Greek Territorial Waters. Former sites CSK-11A and CSK-12A in theChristiana basin (replaced by CSK-13A and CSK-14A, respectively) have been deleted fromthe site database.
There follows an explanation of each site, with reference to the classification assigned by
SEP in its evaluation of 932-FULL. For brevity, we exclude the extension “REPROC” on theseismic profile names.

Primary sites
CSK-01A (SEP classification 4). This hole will transect and characterize all six seismic packagesof the Anhydros rift basin (B1 to B6) to the Alpine basement. The profile HH06-15 has been2

reprocessed to enhance resolution and to remove ghost reflection and seafloor multiple. A
single 2019 MCS cross line GEOMAR_P2002 is now provided linking sites CSK-01A and CSK02A.

CSK-03A (SEP classification 2). This site will penetrate four seismically recognized volcanic
eruption units from Kolumbo (K2, K3, K5 and the thin lateral continuation of K1), as well as
eruption units from Santorini. Profiles HH06-22 and -34 have been reprocessed to better
resolve the structure at depth, to enhance resolution, and to remove ghost reflection andseafloor multiple.

CSK-05B. Site CSK-05A (SEP classifications 2) has now been replaced by site CSK-05B. This
site lies in the northern basin of Santorini caldera and will penetrate intracaldera seismic
units S1, S2, and S3 in order to characterise them and confirm (or not) published hypotheses.
It will also penetrate below unit S3 (probably intracaldera tuff of the LBA eruption). Sparker
profile HH15-SP1 that linked CSK-05A with CSK-06A has been replaced by new 2019 profile
GEOMAR_P1006. Cross-profile (Sparker-source) HH15-SP5 has been replaced by new 2019
profile GEOMAR_P3004.

CSK-07B. Site CSK-07A (SEP classifications 2) has now been replaced by site CSK-07B. This
site lies in the southern basin of Santorini caldera. It will penetrate intracaldera seismic units
S1, S2, and S3 in order to characterise them, as well as penetrate below unit S3 (probableintracaldera tuff of the Late Bronze Age eruption). It is complementary to site CSK-05B in thenorthern caldera basin, as together they will provide a complete understanding of thecaldera fill and collapse history. Sparker profile HH15-SP10 that links CSK-07A with CSK-08A
has been replaced by new 2019 profile GEOMAR_P1006. Cross-profiles 20060504_052810
and 20060504_044615 have been reprocessed for ghost and bubble suppression andmigration.

CSK-09A (SEP classification 1). This site will transect all six seismic units present in the Anafi
basin (B1 to B6) to the Alpine basement. It remains unchanged from 932-FULL, but the
reprocessed data (profiles HH06-09-REPROC, HH06-09-15-REPROC) elucidate strata muchbetter.
3

CSK-13A. This is our new primary site for the Christiana Basin (replaces CSK-11A in FULL).
The aim of drilling in the Christiana Basin remains to allow us to access an earlier volcanic
history than the basins to the north-east of Santorini. The new primary site is situated NE of
Christiana on seismic profiles that reveal a much more coherent stratigraphy, including unitsinterpreted as derived from Christiana (Ch1 and Ch2) and Santorini (Th1, Th2, and Th3)
(Figure 3). Three prominent reflectors (Pf1, Pf2 and Pf3) are tentatively interpreted as
pyroclastic flow deposits from Santorini. These new profiles in the Christiana Basin are
greatly superior in quality to those presented in 932-FULL. We note that our new seismiclines provide an excellent basis, along with drill cores, for unravelling the stratigraphy ofthese volcanoes, since the resolution is much better than before. In particular, the newly
acquired seismic data from Christiana Basin allow for distinguishing those pyroclastic flows
and sediments that origin from Santorini from those that origin from Christiana. With asingle drill site, we can unravel the correlations between Christiana and Santorini by drilling
down to the pre-volcanic basement. We also anticipate the presence of volcaniclastics
derived from Milos volcano (NW of Santorini) in this core. The site is crossed by profiles
GEOMAR_P5009 and GEOMAR_P5006.

Alternate sites
CSK-02A (SEP classification 4). This is an alternate for CSK-01A. The profile HH06-14 has been
reprocessed to enhance resolution and to remove ghost reflection and seafloor multiple. A
single 2019 MCS cross line GEOMAR_P2002 is now provided linking sites CSK-02A and CSK01A.

CSK-04A (SEP classification 2). This is an alternate to CSK-03A. While it appears that this holedoes not encounter the different eruptive units from Kolumbo, we anticipate that this issimply an artefact of image resolution. Inspection suggests that these units should extend to
this site, but are too thin to show at this scale. We keep this site in case sites CSK-03A, 16A
and 21A (which are located closer to Kolumbo vent) encounter very coarse ejecta.
Reprocessing of lines HH06-22 and HH06-44 resolves the strata now sufficiently.

4

CSK-06B. Site CSK-06A (SEP classifications 2) has now been replaced by site CSK-06B. It is analternate for 05B. Sparker profile HH15-SP1 that links CSK-05A with CSK-06A has been
replaced by new 2019 profile GEOMAR_P1006. Cross-profiles (Sparker-source) HH15-SP6 has
been replaced by new 2019 profile GEOMAR_P3003.

CSK-08B. Site CSK-08A (SEP classifications 3) has now been replaced by site CSK-08B. It is analternate for CSK-07B. Sparker profile HH15-SP10 that links CSK-07A with CSK-08A has been
replaced by new 2019 profile GEOMAR_P1006. Cross-profiles 20060504_052810 and20060504_044615 have been reprocessed for ghost and bubble suppression and migration.

CSK-10A (SEP classification 1). This site is an alternate for CSK-09A. It remains unchanged
from 932-FULL, but the reprocessed data (profiles HH06-04-REPROC, HH06-15-REPROC)
elucidate strata much better.

CSK-14A. This is an alternate to site CSK-13A and is located at a crossing of GEOMAR_P5009
and 20060506_214929.

CSK-15A. This is an additional alternate site to CSK-01A, shifted 675 m towards the basin
center and master fault along profile HH06-15-REPROC. No crossing line is present.

CSK-16A. This is an additional alternate site to CSK-03A, shifted along profile HH06-22REPROC 1350 m closer to Kolumbo caldera. Here, the volcanic sequences are thicker. No
crossing line is present.

CSK-17A. This is an additional alternate site to CSK-05B, shifted along GEOMAR_P1006 220
m closer to the basin center. No crossing line is present.

CSK-18A. This is an additional alternate site to CSK-07B in the southern Santorini caldera,
constrained by profiles GEOMAR_P1006 and 20060429_13414.

CSK-19A. This additional alternate site to CSK-09A is directly in the basin center, constrainedby near-by crossing lines.
5

CSK-20A. This is an alternative Site to CSK-13A and is located a crossing of GEOMAR_P5009
and GEOMAR_P5008.

CSK-21A. Site CSK-04B (SEP classifications 3) has been renamed CSK-21A at the request of
the IODP proposal manager. It is an alternate to CSK-03A. By drilling deep below unit K1, thishole offers an opportunity to sample early products of Kolumbo not yet identified
seismically. After the reprocessing the profiles HH06-37 and HH06-45 nicely resolve thedeeper strata.

Modified coring and logging operations
The revised drilling operations plan is as follows. Primary drill sites outside the caldera will
each need 10 to 12 operational days, including 1-2 days of logging and 8 to 11 days ofdrilling. Drilling inside the caldera will NOT require casing and we expect ~4 days of drilling at
both sites followed by 1 day of logging. Operational days on primary sites sum to ~55 days,
and the total expedition duration (including ~1 days of transit time and 5 days port call)amounts to ~61 days for a drilling sequence CSK-09, CSK-01, CSK-03, CSK-13, CSK-05, CSK-07.

6

Survey(Year)
2006_A
2006_B
2012_A
2012_B20152019

No. ofProfiles
51
128
19
13
13
44

LengthSourceChannels

Streamer length

1500 km
990 km
82 km
38 km
120 km620 km

1 GI-Gun (45/105 cin)
1 airgun (10 cin)
1 airgun (10 cin)
1 airgun (10 cin)
1 Sparker (6 KJ)
1 GI-Gun (75/75 cin)

24
1
1
1
24
132/ 120 / 32

600 m / 150 m
SCS
SCS
SCS
100 m
200 m / 187.5 m /50 m

Dominant
frequency
100 Hz
60 Hz
125 Hz125 Hz300 Hz150 HzData holder
UHH
UA
UA
UA
UHH
GEOMAR

Table 1. Summary of seismic acquisition, including the 2019 cruise. Abbreviations: cin: Cubic inch
(volume); SCS: Single channel seismics; UA: University of Athens; UHH: University of Hamburg.

Site

Primary or
Alternate

Coordinatesline 1 CDP

Line 2 CDP

01A

P

02A

A

03A

P

04A

A

05B

P

06B

A

07B

P

08B

A

09A

P

10A

A

13A

P

14A

A

15A

A
A

17A

A

18A

A

19A

A

20A

A

21A

A

HH06-15-REPROC
CDP 2746
HH06-14-REPROC
CDP 150
HH06-34-REPROC
CDP 760
HH06-44-REPROC
CDP 1626
GEOMAR_P1006
CDP 20079
GEOMAR_P1006
CDP 20648
GEOMAR_P1006
CDP 15324
GEOMAR_P1006
CDP 14501
HH06-15-REPROC
CDP 1067
HH06-15-REPROC
CDP 906
GEOMAR_P5009
CDP 5042
GEOMAR_P5009
CDP 1644
HH06-15-REPROC
CDP 2770
HH06-22-REPROC
CDP 722
GEOMAR_P1006
CDP 19938
GEOMAR P1006
CDP 13690
HH06-04-REPROC
CDP 1919
GEOMAR_P5009
CDP 3013
HH06-37-REPROC
CDP 1009

GEOMAR_P2002
CDP 5572
GEOMAR_P2002
CDP 1636
HH06-22-REPROC
CDP 614
HH06-22-REPROC
CDP 345
GEOMAR_P3004
CDP 1259
GEOMAR_P3003
CDP 2159
20060504_052810-REPROC
CDP 234
20060504_044615-REPROC
CDP 801
HH06-09-REPROC
CDP 3403
HH06-04-REPROC
CDP 1755
GEOMAR_P5006
CDP 4431
20060506_214929-REPROC
CDP 886
Does not apply

16A

36.7293°N
25.6482°E
36.7438°N
25.7146°E
36.5549°N
25.4398°E
36.5728°N
25.4092°E
36.4356°N
25.3806°E
36.4423°N
25.3752°E
36.38895°N
25.41713°E
36.38161°N
25.40606°E
36.5656°N
25.7613°E
36.5494°N
25.7714°E
36.3243°N
25.1826°E
36.3049°N
25.1286°E
36.7320°N
25.6463°E
36.5480°N
25.4517°E
36.4339°N
25.3819°E
36.3755°N
25.3942°E
36.5563°N
25.7503°E
36.3127°N
25.1501°E
36.5068°N
25.5053°E

Table 2. Summary of the proposed drilling sites.

7

Water
Depth
(m)
489

Penetration
(m)

488

447

397

566

402

545

385

360

383

360

292

360

293

375

694

595

672

377

489

857

523

756

490

800

Does not apply

372

565

Does not apply

386

420

20060429_134104-REPROC
CDP 1845
300 m N of cross-line
GEOMAR_P5017
GEOMAR_P5008
CDP4521
HH06-45-REPROC
CDP 5727

291

380

688

740

515

909

309

730

765

Figure 1. Locations of the drilling sites from 932-ADD (red dots, primary sites; yellow dots, alternate
sites). The two sites shown as white dots are sites 11A and 12A of 932-FULL, which have now been
removed for reasons explained in the text. Site 21A is the same as 04B in FULL, renamed following arequest from the IODP proposal manager.

8

Figure 2. Available seismic lines in and around the Christiana-Santorini-Kolumbo (CSK) volcanic field,with those around and inside of Santorini caldera shown enlarged in the inset. Lines from 2006 to2015 were presented in 932-FULL. In October 2019, in response to the SEP evaluation, we shot theadditional multi-channel lines shown in red. The proposed drilling sites are taken from Figure 1. The
two sites shown as white dots are sites 11A and 12A of 932-FULL, which have now been disactivatedfor reasons explained in the text. The submarine limit of pyroclastic flows from the Late Bronze Age
eruption of Santorini are also shown, as are heat flow measurement sites (from Hannington et al.
2017) that were already presented in 932-FULL.

9Figure 3. New (2019), multi-channel seismic profiles in the Christiana Basin, showing new primarysite CSK-13A (and nearby alternate sites CSK-14A and CSK-20A). This primary site replaces site 11A in
932-FULL, since new seismic profiles of site 11A revealed major slumping (site 11A and its alternate
12A have now been removed from the proposal). Site 13A will penetrate the volcano-sedimentary
fill of the Christiana basin to the pre-volcanic basement, traversing units interpreted as derived fromChristiana (Ch1 and Ch2) and Santorini (Th1, Th2, and Th3). Three prominent reflectors (Pf1, Pf2 andPf3) are tentatively interpreted as pyroclastic flow deposits from Santorini. Drilling in the Christiana
Basin should allow us to access an earlier volcanic history than the basins north-east of Santorini. The
quality of these new profiles in the Christiana Basin is greatly superior to those presented in 932FULL. The red line is a fault and the black vertical lines show proposed penetration to the prevolcanic basement.

10Figure 4. Reprocessing instances. Brutstacks are A, C and E, the reprocessed profiles are shown in B,
D and F. A and B show a profile across Kolumbo submarine volcano. Depth conversion in (D) by depth
stretching. Profile C/D crosses the Amorgos Basin. Note the shallow faults and internal reflection
configuration. E/F is an instance if the 2006 single channel seismics from Santorini caldera.

11

IODP Site Forms

932 - Add

Form 1 – General Site Information

Section A: Proposal Information

Proposal Title

Date Form Submitted

Volcanism and tectonics in an island-arc rift environment (VolTecArc): Christiana-Santorini-Kolumbo marine
volcanic field, Greece

2019-11-22 13:07:02

Site-Specific CSK-01A targets the plio-quaternay volcano-sedimentary fill of the Anhydros Basin, to the depth of the Alpine
Objectives with basement. The site lies near the basin axis in a position downstream of Santorini and Kolumbo Volcanoes.
The aim is to use the core (and seismic profiles) to reconstruct the volcanic, sedimentary and tectonic
Priority

histories of the basin, and to access a near-continuous time series of volcanism in the area since rift
(Must include general
inception. The hole will transect and characterize all six seismic packages of the Anhydros rift basin (B1 toobjectives in proposal)
B6).

List Previous
Drilling in Area

DSDP hole 378 was drilled in 1975 in the Cretan basin 60 km SSW of Santorini

Section B: General Site Information

Site Name:

Area or Location: Anhydros Basin, Aegean Sea,

CSK-01A

GreeceIf site is a reoccupation of an
old DSDP/ODP Site, Please
include former Site#

Latitude:Deg:

Longitude:

Deg:

Distance to Land: 10(km)

25.6482

Coordinate System:
Priority of Site:

Jurisdiction: Greek territorial waters

36.7293

WGS 84
Primary:

Generated: 2020-01-29T22:52:20+00:00✓⃞

Alternate:⃞

Water Depth (m): 489

Section C: Operational Information

Proposed
Penetration (m):Sediments

Basement

756

9

Total Sediment Thickness (m)756

Total Penetration (m):General Lithologies:
Coring Plan:(Specify or check)

Limestone, schist or granite

Muds, volcaniclastics, debris flows, turbidites

2 Holes APC/HLAPC to refusal, each followed by XCB to 610 mbsf; drill ahead in Hole C to 575 mbsf with the option of one or two coredintervals of 50 meters in between and afterwards RCB to 765 mbsf, including 9 m of basement or until refusal; wireline logging in Hole C(Tripple Combo, FMS Sonic, VSI)

APC

Wireline Logging
Plan:

765

✓

XCB

✓

RCB

Standard Measurements

Special Tools

✓
✓
✓
✓
✓
✓
✓
✓

Magnetic Susceptibility

WL
Porosity
DensityGamma Ray
Resistivity
Sonic (∆t)
Formation Image (Res)VSP (zero offset)

Borehole Temperature✓✓✓

Re-entry

PCS

Other
tools:

Formation Image(Acoustic)
VSP (walkaway)
LWD

Formation Temperature& Pressure
Other Measurements:

Estimated Days:

Drilling/Coring:

10.7

Logging:

1.6

Total On-site:

12.3

Observatory Plan:

Longterm Borehole Observation Plan/Re-entry Plan

Potential Hazards/
Weather:

Shallow Gas

Complicated Seabed
Condition

Hydrothermal Activity

Preferred weather window

Hydrocarbon

Soft SeabedLandslide and Turbidity
Current

Late autumn,
winter or early
springShallow Water Flow

Currents

Gas Hydrate

Abnormal Pressure

Fracture Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H2S

High Dip Angle

Ice Conditions(e.g., sea-floor cables,
dump sites)

CO2
Sensitive marine
habitat (e.g., reefs,

vents)

Other:

Generated: 2020-01-29T22:52:20+00:00

High winds, dense tourist shipping

IODP Site Forms

Proposal #:932 - Add

Form 2 - Site Survey Detail

Site #:

Data Type

CSK-01A

Date Form Submitted: 2019-11-22 13:07:02

In SSDB

Details of available data and data that are still to be collected

1a High resolution seismic reflection (primary)yes

Line: HH06-15-REPROC
Position: CDP 2746

1b High resolution seismic seismic reflection (crossing)yes

Line: GEOMAR_P2002
Position: CDP 5572

2a Deep penetration seismic reflection (primary)no2b Deep penetration seismic reflection (crossing)no

3 Seismic Velocity

yes

4 Seismic Gridno5a Refraction (surface)no5b Refraction (bottom)

no6 3.5 kHzyes

The 3.5 kHz profiles do not run along the site survey profiles, but image
the shallow strata on a regional scale.

7 Swath bathymetry

yes

CSK-Bathymetry.grd, CSK-Bathymetry.pdf

8a Side looking sonar (surface)yes

8b Side looking sonar (bottom)

no

See Velocity_Table.pdf

9 Photography or video
10 Heat Flow
11a Magnetics

yes

CSK-Mag.grd, CSL-Mag.pdf
These grids cover entire study area on a regional scale, covering all sites.
There are no site specific grids or maps.

11b Gravity

yes

CSK-Gravity-FreeAir.grd, CSK-Gravity-FreeAir.pdf
CSK-Bouguer.grd, CSK-Gravity-FreeAir.pdf
These grids cover entire study area on a regional scale, covering all sites.
There are no site specific grids or maps.

12 Sediment coresyes~5m long gravity core and a box corer (POS513/15 and 21), 7 km fromsite position showing soft hemipelagic muds with some 1 to 5 cm thickintercalated ash layers; Sedimentation rate ~9 cm/ka.

13 Rock sampling
14a Water current datano14b Ice Conditions

no15 OBS microseismicity

no16 Navigationyes

17 Otherno

Generated: 2020-01-29T22:52:20+00:00

HH06-15-REPROC.txt, GEOMAR_P2002.txt

IODP Site Forms

Proposal #:Form 4 - Environmental Protection

932 - Add

Site #:

CSK-01A

Date Form Submitted: 2019-11-22 13:07:02

Pollution & Safety Hazard

Comment

1. Summary of operations at site

Two holes (A, B) APC/HLAPC to refusal including 4 temperature measurements, each followed by
XCB to 610 mbsf; Hole C: RCB drilling ahead until 575 mbsf with the option of one or two coredintervals of 50 meters in between, RCB to 765 mbsf including 9 m of basement, log as shown on
form 1

2. All hydrocarbon occurrences based on
previous DSDP/ODP/IODP drillingnon

3. All commercial drilling in this area that
produced or yielded significant
hydrocarbon showsnon

4. Indications of gas hydrates at thislocationno5. Are there reasons to expecthydrocarbon accumulations at this site?

no6. What "special" precautions will betaken during drilling?

non

7. What abandonment procedures need
to be followed?

Non

8. Natural or manmade hazards which
may affect ship's operations

sailing traffic may be existent but minimized during autumn to early spring

9. Summary: What do you consider the
major risks in drilling at this site?

Target drill depth may be to deep for XCB only

Generated: 2020-01-29T22:52:20+00:00

IODP Site Forms

Proposal #:932 - Add

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

0 - 43Form 5 - Lithologies

Seismic unit B6:
horizontal dipping
beds, one stronger
reflector at ~20 m

43 - 95

Seismic unit B5:
horizontal dippingbeds

95 - 239

Seismic unit B4:
horizontal dipping
beds, several
stronger reflectors
distributed within theunit

239 - 349

Seismic unit B3:
subhorizontal
dipping beds,
several stronger
reflectors distributed
within the unit

349 - 488

Seismic unit B2:
subhorizontal
dipping beds,
several stronger
reflectors distributed
within the unit;
chaotic layering in
the lower part?

Site #:

Age (My)

Pleistocene/
Holocene

Pleistocene

Early?
Pleistocene

Early
Pleistocene/
Pliocene

CSK-01A

Date Form Submitted: 2019-11-22 13:07:02

Assumedvelocity(km/s)

Lithology

Paleo-environment

1.6

hemipelagic muds,
volcaniclastics,
turbidites

filled submarine riftbasin

1.8

2.0

2.1

hemipelagic muds,
volcaniclastics,
turbidites

hemipelagic muds,
volcaniclastics,
turbidites

hemipelagic muds,
volcaniclastics,
turbidites

filled submarine riftbasin

filled submarine riftbasin

filled submarine riftbasin

Avg. accum.
rate (m/My)

Comments

180

lithology similar like ingravity core;interpretation
Nomikou et al.
(2016b; 2018)170

lithology andstructures are thesame like in firstseismic units but
stronger compacted;
Interpretation after
Nomikou et al.
(2016b; 2018)

160

More turbiditic
deposits but at drillsite still horizontal
layering;
interpretation after
Nomikou et al.
(2016b; 2018)

150

Inclination in bedding
indicate either initial
fill off the rifted basin
or tectonic activity;interpretation after
Nomikou et al.
(2016b; 2018)

120

Inclination in bedding
indicate either initial
fill off the rifted basin
or tectonic activity;
chaotic layer may
indicate slumping andmass flows;interpretation after
Nomikou et al.
(2016b; 2018)

early
Pleistocene?/ 2.4
Pliocenehemipelagic muds,
volcaniclastics,
turbidites, MTD´s?

488 - 756

Seismic unit B1:
subhorizontal
dipping beds on
basement
unconformity

Pliocene

2.6

MTD´s, sands andgravel, turbidites,
hemipelagic muds,
volcaniclastics

submarine tocontinental; initial
filling of a rift basin

110

initial filling sequenceof the rift with mixed
volcaniclastic andcontinental material;
interpretation after
Nomikou et al.
(2016b; 2018)756 - 765

continental
basement

Mesozoic

3.0

limestone, schists,
granites

continental
basement??

Interpretation after
Nomikou et al.
(2016b; 2018)

Generated: 2020-01-29T22:52:20+00:00

filled submarine rift

CSK-01A
SE

E

W

TWT(msec)

TWT(msec)

NW

a)

1Km

NW

SE

B1
Bs
1Km

CSK-02A

GEOMAR_P2002

CSK-15A
CSK-01A

HH06-15

HH06-15-REPROCGEOMAR_P2002

1Km

E

W
B6
B5
B4
B3
B2

TWT(msec)

TWT(msec)

B6
B5
B4
B3
B2

c)

b)

HH06-15-REPROC

B1

d)

Bs
1Km

GEOMAR_P2002

CSK-01A: HH06-15-REPROC, CDP 2746 (a and c); GEOMAR_P2002, CDP 5572 (b and d)Files to be uploaded to SSDB:
Location map: CSK-01A_location.pdf
SEGY-data: HH06-15-REPROC.sgy, GEOMAR_P2002.sgy
Navigation data: HH06-15-REPROC.txt, GEOMAR_P2002.txt
Bathymetry: CSK_Bathymetry.grd, CSK_Bathymetry.pdf

HH06-14Site Information:
Coordinates: 36.7293/25.6482
Water depth: 489 m
Penetration: 765 m

IODP Site Forms

932 - Add

Form 1 – General Site Information

Section A: Proposal Information

Proposal Title

Date Form Submitted

Volcanism and tectonics in an island-arc rift environment (VolTecArc): Christiana-Santorini-Kolumbo marine
volcanic field, Greece

2019-11-22 13:07:02

Site-Specific CSK-02A targets the plio-quaternay volcano-sedimentary fill of the Anhydros Basin, to the depth of the Alpine
Objectives with basement. The site lies near the basin axis in a position downstream of Santorini and Kolumbo Volcanoes.
The aim is to use the core (and seismic profiles) to reconstruct the volcanic, sedimentary and tectonic
Priority

histories of the basin, and to access a near-continuous time series of volcanism in the area since rift
(Must include general
inception. The hole will transect and characterize all six seismic packages of the Anhydros rift basin (B1 toobjectives in proposal)
B6).

List Previous
Drilling in Area

DSDP hole 378 was drilled in 1975 in the Cretan basin 60 km SSW of Santorini

Section B: General Site Information

Site Name:

Area or Location: Anhydros Basin, Aegean Sea,

CSK-02A

GreeceIf site is a reoccupation of an
old DSDP/ODP Site, Please
include former Site#

Latitude:Deg:

Longitude:

Deg:

Distance to Land: 6(km)

25.7146

Coordinate System:
Priority of Site:

Jurisdiction: Greek territorial waters

36.7438

WGS 84
Primary:

Generated: 2020-01-29T22:52:20+00:00⃞

Alternate:✓⃞

Water Depth (m): 488

Section C: Operational Information

Proposed
Penetration (m):Sediments

Basement

437

10

Total Sediment Thickness (m)437

Total Penetration (m):General Lithologies:
Coring Plan:(Specify or check)

Limestone, schist or granite

Muds, volcaniclastics, debris flows, turbidites

3 Holes APC/HLAPC to refusal, each followed by XCB to 447 mbsf including 10 meters into basement or until refusal;
wireline logging in Hole C (Tripple Combo, FMS Sonic, VSI)
APC

Wireline Logging
Plan:

447

✓

XCB

✓

RCB

Standard Measurements

Special Tools

✓
✓
✓
✓
✓
✓
✓
✓

Magnetic Susceptibility

WL
Porosity
DensityGamma Ray
Resistivity
Sonic (∆t)
Formation Image (Res)VSP (zero offset)

Borehole Temperature✓✓

Re-entry

PCS

Other
tools:

Formation Image(Acoustic)
VSP (walkaway)
LWD

Formation Temperature& Pressure
Other Measurements:

Estimated Days:

Drilling/Coring:

7.1

Logging:1

Total On-site:

8.1

Observatory Plan:

Longterm Borehole Observation Plan/Re-entry Plan

Potential Hazards/
Weather:

Shallow Gas

Complicated Seabed
Condition

Hydrothermal Activity

Preferred weather window

Hydrocarbon

Soft SeabedLandslide and Turbidity
Current

Late autumn,
winter or early
springShallow Water Flow

Currents

Gas Hydrate

Abnormal Pressure

Fracture Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H2S

High Dip Angle

Ice Conditions(e.g., sea-floor cables,
dump sites)

CO2
Sensitive marine
habitat (e.g., reefs,

vents)

Other:

Generated: 2020-01-29T22:52:20+00:00

High winds, dense tourist shipping

IODP Site Forms

Proposal #:932 - Add

Form 2 - Site Survey Detail

Site #:

Data Type

CSK-02A

Date Form Submitted: 2019-11-22 13:07:02

In SSDB

Details of available data and data that are still to be collected

1a High resolution seismic reflection (primary)yes

Line: HH06-14-REPROC
Position: CDP 150

1b High resolution seismic seismic reflection (crossing)yes

Line: GEOMAR_P2002
Position: CDP 1636

2a Deep penetration seismic reflection (primary)no2b Deep penetration seismic reflection (crossing)no

3 Seismic Velocityno4 Seismic Gridno5a Refraction (surface)no5b Refraction (bottom)

no6 3.5 kHzno

Data and info see Site CSK-01A

7 Swath bathymetrynoData and info see Site CSK-01A

8a Side looking sonar (surface)noData and info see Site CSK-01A

8b Side looking sonar (bottom)no9 Photography or video

no10 Heat Flowno11a Magnetics

noData and info see Site CSK-01A

11b Gravity

noData and info see Site CSK-01A

12 Sediment coresyes~5m long gravity core and a box corer (POS513/15 and 21), 4 km fromsite position showing soft hemipelagic muds with some 1 to 5 cm thickintercalated ash layers; Sedimentation rate ~9 cm/ka.

Data and info see Site CSK-01A

13 Rock sampling
14a Water current datano14b Ice Conditions

no15 OBS microseismicity

no16 Navigationyes

17 Otherno

Generated: 2020-01-29T22:52:20+00:00

HH06-16-REPROC.txt, GEOMAR_P2002.txt

IODP Site Forms

Proposal #:Form 4 - Environmental Protection

932 - Add

Site #:

CSK-02A

Date Form Submitted: 2019-11-22 13:07:02

Pollution & Safety Hazard

Comment

1. Summary of operations at site

Tripple APC/HLAPC (Holes A, B, C) to refusal including 4 temperature measurements, eachfollowed by XCB to 447 mbsf including 10 meters of basement or until refusal, log as shown on
form 1

2. All hydrocarbon occurrences based on
previous DSDP/ODP/IODP drillingnon

3. All commercial drilling in this area that
produced or yielded significant
hydrocarbon showsnon

4. Indications of gas hydrates at thislocationnon

5. Are there reasons to expecthydrocarbon accumulations at this site?

non

6. What "special" precautions will betaken during drilling?

non

7. What abandonment procedures need
to be followed?

non

8. Natural or manmade hazards which
may affect ship's operations

sailing traffic may be existent but minimized during autumn to early spring

9. Summary: What do you consider the
major risks in drilling at this site?

Target drill depth may be to deep for XCB only

Generated: 2020-01-29T22:52:20+00:00

IODP Site Forms

Proposal #:932 - Add

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

0 - 51

Form 5 - Lithologies

Seismic unit B6:
horizontal dipping
beds, one stronger
reflector at ~30 m

Site #:

Age (My)

Pleistocene/
Holocene

CSK-02A

Date Form Submitted: 2019-11-22 13:07:02

Assumedvelocity(km/s)

Lithology

Paleo-environment

1.6

hemipelagic muds,
volcaniclastics,
turbidites

filled submarine riftbasin

Comments

120

lithology similar like ingravity core;interpretation after
Nomikou et al.
(2016b; 2018)110

lithology andstructures are thesame like in firstseismic units but
stronger compacted;
interpretation after
Nomikou et al.
(2016b; 2018)

100

More turbiditic
deposits but at drillsite still horizontal
layering;
interpretation after
Nomikou et al.
(2016b; 2018)

51 - 116

Seismic unit B5:
horizontal dippingbeds

116 - 152

seismic unit B4 withhorizontal dipping
beds, several
stronger reflectors
distributed within theunit

152 - 291

seismic unit B3 with
subhorizontal
dipping beds,
several stronger
reflectors distributed
within the unit

Early
Pleistocene/
Pliocene

2.1

hemipelagic muds,
volcaniclstics,
turbidites

filled submarine riftbasin

90

Inclination in bedding
indicate either initial
fill off the rifted basin
or tectonic activity;interpretation after
Nomikou et al.
(2016b; 2018)291 - 375

seismic unit B2

Early
Pleistocene?/ 2.4
Pliocenehemipelagic muds,
volcaniclastics

filled submarine riftbasin

80

Interpretation after
Nomikou et al.
(2016b; 2018)375 - 437

Seismic unit B1

Pliocene

2.6

hemipelagic muds,
volcaniclastics

submarine tocontinental; initial
filling of a rift basin

70

Interpretation after
Nomikou et al.
(2016b; 2018)437 - 447

continental
basement

Mesozoic

3.0

Limestones,
schists, granites

Basement??

Interpretation after
Nomikou et al.
(2016b; 2018)

Pleistocene

Early?
Pleistocene

Generated: 2020-01-29T22:52:20+00:00

1.8

2.0

hemipelagic muds,
volcaniclastics,
turbidites

Avg. accum.
rate (m/My)

hemipelagic muds,
volcaniclstics,
turbidites

filled submarine rift

filled submarine riftbasin

CSK-02A
E

W

TWT(msec)SE

TWT(msec)

NW

1Km

a)

HH06-14-REPROC

NW

SE
B6

E

W
B6
B5
B4
B3
B2

B5

B3
B2

GEOMAR_P2002

1Km

TWT(msec)

TWT(msec)

B4

b)

B1
Bs

B1

1Km

c)

d)

HH06-14-REPROC

CSK-02A

GEOMAR_P2002

CSK-15A
CSK-01A

HH06-15

Bs
1Km

GEOMAR_P2002

CSK-02A: HH06-14-REPROC, CDP 150 (a and c); GEOMAR_P2002, CDP 1636 (b and d)Files to be uploaded to SSDB:
Location map: CSK-01A_location.pdf
SEGY-data: HH06-14-REPROC.sgy, GEOMAR_P2002.sgy
Navigation data: HH06-14-REPROC.txt, GEOMAR_P2002.txt
Bathymetry: CSK_Bathymetry.grd, CSK_Bathymetry.pdf

HH06-14Site Information:
Coordinates: 36.7438/25.7146
Water depth: 488 m
Penetration: 447 m

IODP Site Forms

932 - Add

Form 1 – General Site Information

Section A: Proposal Information

Proposal Title

Date Form Submitted

Volcanism and tectonics in an island-arc rift environment (VolTecArc): Christiana-Santorini-Kolumbo marine
volcanic field, Greece

2019-11-22 13:07:02

Site-Specific CSK-03A lies in the Anhydros Basin on the NW submarine flank of Kolumbo Volcano. The aim is to penetrate
Objectives with four seismically recognized volcanic eruption units from Kolumbo (K2, K3, K5 and the thin lateral continuationof K1), as well as many eruption units from Santorini. This will enable characterisation of the products of thePriority

Kolumbo eruptions, as well as construction of a coherent stratigraphy for Santorini and Kolumbo together.
(Must include general
The site is placed sufficiently away from Kolumbo vent in order to avoid possible coarse, bouldery facies ofobjectives in proposal)
the eruption units.

List Previous
Drilling in Area

DSDP hole 378 was drilled in 1975 in the Cretan basin 60 km SSW of Santorini

Section B: General Site Information

Site Name:

Area or Location: Anhydros Basin, Aegean Sea,

CSK-03A

GreeceIf site is a reoccupation of an
old DSDP/ODP Site, Please
include former Site#

Latitude:Deg:

Longitude:

Deg:

Distance to Land: 9(km)

25.4398

Coordinate System:
Priority of Site:

Jurisdiction: Greek territorial waters

36.5549

WGS 84
Primary:

Generated: 2020-01-29T22:52:20+00:00✓⃞

Alternate:⃞

Water Depth (m): 397

Section C: Operational Information

Proposed
Penetration (m):Sediments

Basement

566

0Total Sediment Thickness (m)566

Total Penetration (m):General Lithologies:
Coring Plan:(Specify or check)Muds, volcaniclastics, debris flows, turbidites
3 Holes APC/HLAPC to refusal, each followed by XCB to 566 mbsf; wireline logging in Hole C (Tripple Combo, FMS
Sonic, VSI)
APC

Wireline Logging
Plan:

566

✓

XCB

✓

RCB

Standard Measurements

Special Tools

✓
✓
✓
✓
✓
✓
✓
✓

Magnetic Susceptibility

WL
Porosity
DensityGamma Ray
Resistivity
Sonic (∆t)
Formation Image (Res)VSP (zero offset)

Borehole Temperature✓✓

Re-entry

PCS

Other
tools:

Formation Image(Acoustic)
VSP (walkaway)
LWD

Formation Temperature& Pressure
Other Measurements:

Estimated Days:

Drilling/Coring:

8.2

Logging:

1.3

Total On-site:

9.5

Observatory Plan:

Longterm Borehole Observation Plan/Re-entry Plan

Potential Hazards/
Weather:

Shallow Gas

Complicated Seabed
Condition

Hydrothermal Activity

Preferred weather window

Hydrocarbon

Soft SeabedLandslide and Turbidity
Current

Late autumn,
winter or early
springShallow Water Flow

Currents

Gas Hydrate

Abnormal Pressure

Fracture Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H2S

High Dip Angle

Ice Conditions(e.g., sea-floor cables,
dump sites)

CO2
Sensitive marine
habitat (e.g., reefs,

vents)

Other:

Generated: 2020-01-29T22:52:20+00:00

High winds, dense tourist shipping

IODP Site Forms

Proposal #:932 - Add

Form 2 - Site Survey Detail

Site #:

Data Type

CSK-03A

Date Form Submitted: 2019-11-22 13:07:02

In SSDB

Details of available data and data that are still to be collected

1a High resolution seismic reflection (primary)yes

Line: HH06-22-REPROC
Position: CDP 614

1b High resolution seismic seismic reflection (crossing)yes

Line: HH06-34-REPROC
Position: CDP 760

2a Deep penetration seismic reflection (primary)no2b Deep penetration seismic reflection (crossing)no

3 Seismic Velocityno4 Seismic Gridno5a Refraction (surface)no5b Refraction (bottom)

no6 3.5 kHzno

Data and info see Site CSK-01A

7 Swath bathymetrynoData and info see Site CSK-01A

8a Side looking sonar (surface)

Data and info see Site CSK-01A

Data and info see Site CSK-01A

8b Side looking sonar (bottom)
9 Photography or video

no10 Heat Flowno11a Magnetics

noData and info see Site CSK-01A

11b Gravity

noData and info see Site CSK-01A

yes

3 potential gravity cores nearby: POS513/57 1.6 km away showing 20 cm
of muddy surface sediments and stuck in >30 cm fine to coarse ash
volcaniclastics (63µ to 1 cm grain sizes); POS513/17 in 4 km distanceshowing 30 cm of muddy surface sediments and stuck in >50 cm finegrained volcaniclastics (<0.5 cm grain sizes); POS513/16 showing 20 cm
of muddy surface sediments and stuck in 80 cm fine-grained
volcaniclastics (<1mm grain size); Sedimentation rate ~9 cm/ka in muddy
sediments, and event sedimentation for volcaniclastics.

12 Sediment cores

13 Rock sampling
14a Water current datano14b Ice Conditions

no15 OBS microseismicity

no16 Navigationyes

17 Otherno

Generated: 2020-01-29T22:52:20+00:00

HH06-22-REPROC.txt, HH06-34-REPROC.txt

IODP Site Forms

Proposal #:Form 4 - Environmental Protection

932 - Add

Site #:

CSK-03A

Date Form Submitted: 2019-11-22 13:07:02

Pollution & Safety Hazard

Comment

1. Summary of operations at site

Tripple APC/HLAPC (Holes A, B, C) to refusal including 4 temperature measurements, eachfollowed by XCB to 566 mbsf, log as shown on form 1

2. All hydrocarbon occurrences based on
previous DSDP/ODP/IODP drillingnon

3. All commercial drilling in this area that
produced or yielded significant
hydrocarbon showsnon

4. Indications of gas hydrates at thislocationnon

5. Are there reasons to expecthydrocarbon accumulations at this site?

non

6. What "special" precautions will betaken during drilling?

non

7. What abandonment procedures need
to be followed?

non

8. Natural or manmade hazards which
may affect ship's operations

sailing traffic may be existent but minimized during autumn to early spring

9. Summary: What do you consider the
major risks in drilling at this site?

Target drill depth may be to deep for XCB only and fine to coarse volcaniclastic in the top 10
meters may be be difficult to penetrate

Generated: 2020-01-29T22:52:20+00:00

IODP Site Forms

Proposal #:Form 5 - Lithologies

932 - Add

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

Site #:

CSK-03A

Date Form Submitted: 2019-11-22 13:07:02

Age (My)

Assumedvelocity(km/s)

Lithology

Paleo-environment

Avg. accum.
rate (m/My)

Comments

0 - 20

Seismic unit K5: AD
1650 eruption of
Kolumbo

AD 1650

1.65

Volcaniclastics(pumiceous)filled submarine riftbasin>1,000,000

Interpretation of
Hubscher et al.
(2015)

20 - 118

Seismic unit SK4;
Volcaniclastics(including debris
flows) from
Santorini, andmarinesedimentation

Holocene/
Upper
Pleistocene

1.7

hemipelagic muds,
volcaniclastics,
turbidites, MTD´sfilled submarine riftbasin

130Interpretation of
Hubscher et al.
(2015)

118 - 129

Seismic unit K3:
eruption of Kolumbo

Pleistocene

1.75

volcaniclastics(probably
pumiceous)filled submarine riftbasin>1,000,000

Interpretation of
Hubscher et al.
(2015)

129 - 212

Seismic unit SK3:
Volcaniclastics from
Santorini (including
mass flows) andmarinesedimentation

Pleistocene

1.8

hemipelagic muds,
volcaniclastics,
turbidites, MTD´s?

filled submarine riftbasin

120Interpretation of
Hubscher et al.
(2015)

212 - 266

Seismic unit SK2:
Volcaniclastics from
Santorini (incuding
mass flows) andmarinesedimentation

Pleistocene

1.8

hemipelagic muds,
volcaniclastics,
turbidites, MTD´s?

filled submarine riftbasin

110Interpretation of
Hubscher et al.
(2015)

266 - 288

Seismic unit K2:
eruption of Kolumbo

Pleistocene

1.85

volcaniclastics(probably
pumiceous)filled submarine riftbasin>1,000,000

Interpretation of
Hubscher et al.
(2015)

288 - 311

Seismic unit SK1:
Volcaniclastics from
Santorini (including
mass flows) andmarinesedimentation

Pleistocene

1.9

hemipelagic muds,
volcaniclastics,
turbidites, MTD´s?

filled submarine riftbasin

100Interpretation of
Hubscher et al.
(2015)

311 - 320

Seismic unit K1:
eruption of Kolumbo(intercalated within
SK1)

Pleistocene

1.95

Volcaniclastics(probably
pumiceous)filled submarine riftbasin>1,000,000

Presence of unit K1
extrapolated onseismic profiles andassumed to be <10 mthick; interpretation of
Hubscher et al.
(2015)

320 - 566

Seismic unit pre-K1:
Volcaniclastics from
Santorini (including
mass flows) andmarinesedimentation

Pleistocene/
Pliocene?

1900

hemipelagic muds,
volcaniclastics,
turbidites, MTD´s?

filled submarine riftbasin

80

Interpretation of
Hubscher et al.
(2015)

Generated: 2020-01-29T22:52:20+00:00

CSK-03A
NW

SE

TWT(msec)NE

TWT(msec)

SW

1Km

SW
Sk4

HH06-34-REPROC

b)

NE

NW

K5
Sk3

TWT(msec)

Sk1

K2

Sk4 K3Sk2

Sk2

HH06-34-REPROC

1Km

SE

K3

K1

c)

HH06-22-REPROC

1Km

TWT(msec)

a)

1Km

K2
K1

Sk1

d)

K5
Sk3

HH06-22-REPROC

CSK-03A: HH06-34-REPROC, CDP 760 (a and c); HH06-22-REPROC, CDP 614 (b and d)
HH06-34

HH06-44
CSK-04A

CSK-03A

CSK-16A

HH06-45

CSK-21A
HH06-22

HH06-37

Files to be uploaded to SSDB:
Location map: CSK-03A_location.pdf
SEGY-data data: HH06-34-REPROC.sgy, HH06-22-REPROC.sgy
Navigation data: HH06-34-REPROC.txt, HH06-22-REPROC.txt
Bathymetry:CSK_Bathymetry.grd, CSK_Bathymetry.pdf
Backscatter: CSK_Backscatter.grd, CSK_Backscatter.pdf
Gravity-FreeAir: CSK_Gravity_FreeAir.grd, CSK_Gravity_FreeAir.pdf
Gravity-Bouguer: CSK_Gravity_Bouguer.grf,CSK_Gravity_Bouguer.pdf

Site information:
Coordinates: 36.5549/25.4398
Water depth: 397 m
Penetration: 566 m

Additional data available:
Magnetic: CSK_Magnetic.grd,CSK_Magnetic.pdf
3.5kHz: Sediment_Profiler.zip, contains 3.5kHz profiles, do not run along site survey profile.

IODP Site Forms

932 - Add

Form 1 – General Site Information

Section A: Proposal Information

Proposal Title

Date Form Submitted

Volcanism and tectonics in an island-arc rift environment (VolTecArc): Christiana-Santorini-Kolumbo marine
volcanic field, Greece

2019-11-22 13:07:02

Site-Specific CSK-04A lies in the Anhydros Basin on the NW submarine flank of Kolumbo Seamount Volcano. The aim is
Objectives with to penetrate seismically recognized volcanic eruption units from Kolumbo, as well as many units from
Santorini. This will enable characterisation of the products of the Kolumbo eruptions, as well as construction
Priorityof a coherent stratigraphy for Santorini and Kolumbo together. However this site only clearly transects one(Must include general
Kolumbo eruption unit (K5), and has been replaced by site CSK-21A, which is better placed for our
objectives in proposal)
objectives. We retain CSK-04A, as it may transect thin distal equivalents of K1-K5.

List Previous
Drilling in Area

DSDP hole 378 was drilled in 1975 in the Cretan basin 60 km SSW of Santorini

Section B: General Site Information

Site Name:

Area or Location: Anhydros Basin, Aegean Sea,

CSK-04A

GreeceIf site is a reoccupation of an
old DSDP/ODP Site, Please
include former Site#

Latitude:Deg:

Longitude:

Deg:

Distance to Land: 10(km)

25.4092

Coordinate System:
Priority of Site:

Jurisdiction: Greek territorial waters

36.5728

WGS 84
Primary:

Generated: 2020-01-29T22:52:20+00:00⃞

Alternate:✓⃞

Water Depth (m): 402

Section C: Operational Information

Proposed
Penetration (m):Sediments

Basement

545

0Total Sediment Thickness (m)545

Total Penetration (m):General Lithologies:
Coring Plan:(Specify or check)Muds, volcaniclastics, debris flows, turbidites
3 Holes APC/HLAPC to refusal, each followed by XCB to 545 mbsf including 10 meters into basement or until refusal;
wireline logging in Hole C (Tripple Combo, FMS Sonic, VSI)
APC

Wireline Logging
Plan:

545

✓

XCB

✓

RCB

Standard Measurements

Special Tools

✓
✓
✓
✓
✓
✓
✓
✓

Magnetic Susceptibility

WL
Porosity
DensityGamma Ray
Resistivity
Sonic (∆t)
Formation Image (Res)VSP (zero offset)

Borehole Temperature✓✓

Re-entry

PCS

Other
tools:

Formation Image(Acoustic)
VSP (walkaway)
LWD

Formation Temperature& Pressure
Other Measurements:

Estimated Days:

Drilling/Coring:

8.2

Logging:

1.3

Total On-site:

9.5

Observatory Plan:

Longterm Borehole Observation Plan/Re-entry Plan

Potential Hazards/
Weather:

Shallow Gas

Complicated Seabed
Condition

Hydrothermal Activity

Preferred weather window

Hydrocarbon

Soft SeabedLandslide and Turbidity
Current

Late autumn,
winter or early
springShallow Water Flow

Currents

Gas Hydrate

Abnormal Pressure

Fracture Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H2S

High Dip Angle

Ice Conditions(e.g., sea-floor cables,
dump sites)

CO2
Sensitive marine
habitat (e.g., reefs,

vents)

Other:

Generated: 2020-01-29T22:52:20+00:00

High winds, dense tourist shipping

IODP Site Forms

Proposal #:932 - Add

Form 2 - Site Survey Detail

Site #:

Data Type

CSK-04A

Date Form Submitted: 2019-11-22 13:07:02

In SSDB

Details of available data and data that are still to be collected

1a High resolution seismic reflection (primary)yes

Line: HH06-22-REPROC
Position: CDP 345

1b High resolution seismic seismic reflection (crossing)yes

Line: HH06-44-REPROC
Position: CDP 1626

2a Deep penetration seismic reflection (primary)no2b Deep penetration seismic reflection (crossing)no

3 Seismic Velocityno4 Seismic Gridno5a Refraction (surface)no5b Refraction (bottom)

no6 3.5 kHzno

Data and info see Site CSK-01A

7 Swath bathymetryyes

Data and info see Site CSK-01A

8a Side looking sonar (surface)noData and info see Site CSK-01A

8b Side looking sonar (bottom)no9 Photography or video

no10 Heat Flowno11a Magnetics

noData and info see Site CSK-01A

11b Gravity

noData and info see Site CSK-01A

12 Sediment coresyes~3.5m long gravity core and a box corer (POS513/19), 7 km from site
position showing hemipelagic muds with some 1 to 20 cm thickintercalated ash layers (max grain size= 2 mm); Sedimentation rate ~6
cm/ka .

13 Rock samplingno14a Water current datano14b Ice Conditions

no15 OBS microseismicity

no16 Navigationyes

17 Otherno

Generated: 2020-01-29T22:52:20+00:00

Data and info see Site CSK-01A

HH06-22-REPROC.txt, HH06.44-REPROC.txt

IODP Site Forms

Proposal #:Form 4 - Environmental Protection

932 - Add

Site #:

CSK-04A

Date Form Submitted: 2019-11-22 13:07:02

Pollution & Safety Hazard

Comment

1. Summary of operations at site

Tripple APC/HLAPC (Holes A, B, C) to refusal including 4 temperature measurements, eachfollowed by XCB to 545 mbsf; log as shown on form 1

2. All hydrocarbon occurrences based on
previous DSDP/ODP/IODP drillingnon

3. All commercial drilling in this area that
produced or yielded significant
hydrocarbon shows
4. Indications of gas hydrates at thislocationnon

5. Are there reasons to expecthydrocarbon accumulations at this site?

non

6. What "special" precautions will betaken during drilling?

non

7. What abandonment procedures need
to be followed?

non

8. Natural or manmade hazards which
may affect ship's operations

sailing traffic may be existent but minimized during autumn to early spring

9. Summary: What do you consider the
major risks in drilling at this site?

Target drill depth may be to deep for XCB only and fine to coarse volcaniclastic in the top 10
meters may be be difficult to penetrate

Generated: 2020-01-29T22:52:20+00:00

IODP Site Forms

Proposal #:Form 5 - Lithologies

932 - Add

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

Site #:

CSK-04A

Date Form Submitted: 2019-11-22 13:07:02

Age (My)

Assumedvelocity(km/s)

Lithology

Paleo-environment

Avg. accum.
rate (m/My)

Comments

0-8

Seismic unit K5: AD
1650 eruption of
Kolumbo0.0036

1.65

Volcaniclastics(pumiceous)filled submarine riftbasin>1,000,000

Interpretation of
Hubscher et al.
(2015)

8 - 56

Seismic unit SK4:
Volcaniclastics from
Santorini (including
mass flows) andmarinesedimentation

Holocene/
Upper
Pleistocene

1.7

hemipelagic muds,
volcaniclastics,
turbidites, MTD´s?

filled submarine riftbasin

130Interpretation of
Hubscher et al.
(2015)

56 - 184

Seismic unit SK3:
Volcaniclastics from
Santorini (including
mass flows) andmarinesedimentation

Pleistocene

1.8

hemipelagic muds,
volcaniclastics,
turbidites, MTD´s?

filled submarine riftbasin

120Interpretation of
Hubscher et al.
(2015)

184 - 254

Seismic unit SK2:
Volcaniclastics from
Santorini (including
mass flows) andmarinesedimentation

Pleistocene

1.8

hemipelagic muds,
volcaniclastics,
turbidites, MTD´s?

filled submarine riftbasin

110Interpretation of
Hubscher et al.
(2015)

254 - 545

Seismic unit SK1:
Volcaniclastics from
Santorini (including
mass flows) andmarinesedimentation

Pleistocene/
Pliocene?

1.9

hemipelagic
miuds,
volcaniclastics,
turbidites, MTDs

filled submarine riftbasin

100Interpretation of
Hubscher et al.
(2015)

Generated: 2020-01-29T22:52:20+00:00

CSK-04A
NW

SE

TWT(msec)NE

TWT(msec)

SW

a)

1Km

HH06-44-REPROC

b)

NE

NW

SW

HH06-22-REPROC

1Km

SE

Sk3

Sk2

Sk1

c)

HH06-44-REPROC

1Km

CSK-04A

CSK-03A

CSK-16A

HH06-45

CSK-21A
HH06-22

HH06-37

1Km

K2
K1

Sk1

d)

K5
Sk3

HH06-22-REPROC

CSK-04A: HH06-44-REPROC, CDP 1626 (a and c); HH06-22-REPROC, CDP 345 (b and d)

HH06-34

HH06-44

Sk4 K3Sk2

TWT(msec)

TWT(msec)

Sk4

Files to be uploaded to SSDB:
Location map: CSK-04A_location.pdf
SEGY-data data: HH06-44-REPROC.sgy, HH06-22-REPROC.sgy
Navigation data: HH06-44-REPROC.txt, HH06-22-REPROC.txt
Bathymetry: CSK_Bathymetry.grd, CSK_Bathymetry.pdf
Backscatter: CSK_Backscatter.grd, CSK_Backscatter.pdf
Gravity-FreeAir: CSK_Gravity_FreeAir.grd, CSK_Gravity_FreeAir.pdf
Gravity-Bouguer: CSK_Gravity_Bouguer.grf,CSK_Gravity_Bouguer.pdf

Site information:
Coordinates:36.5728/25.4092
Water depth: 402 m
Penetration: 545 m

Additional data available:
Magnetic: CSK_Magnetic.grd,CSK_Magnetic.pdf
3.5kHz: Sediment_Proﬁler.zip, contains 3.5kHz proﬁles, do not run along site survey proﬁleIODP Site Forms

932 - Add

Form 1 – General Site Information

Section A: Proposal Information

Proposal Title

Date Form Submitted

Volcanism and tectonics in an island-arc rift environment (VolTecArc): Christiana-Santorini-Kolumbo marine
volcanic field, Greece

2019-11-22 13:07:02

Site-Specific CSK-05B is sited in the northern basin of Santorini caldera. The aim is to penetrate intracaldera seismic units
Objectives with S1, S2, and S3 in order to characterise them and confirm (or not) published hypotheses, as well as topenetrate below unit S3 (probably intracaldera tuff of the LBA eruption). The hole is located north of a lowPriority

velocity seismic anomaly detected by the PROTEUS seismic tomography experiments and centered on the(Must include general
focus of caldera floor uplift during the unrest period of 2011-12. It replaces hole CSK-05A in FULL.
objectives in proposal)

List Previous
Drilling in Area

DSDP hole 378 was drilled in 1975 in the Cretan basin 60 km SSW of Santorini. Onland drilling on Kameni
islands to 200 m depth in 1987-88.

Section B: General Site Information

Site Name:

Area or Location: Santorini caldera (northern basin),

CSK-05B

Aegean Sea, Greece

If site is a reoccupation of an
old DSDP/ODP Site, Please
include former Site#

Latitude:Deg:

Longitude:

Deg:

Distance to Land: 2(km)

25.3806

Coordinate System:
Priority of Site:

Jurisdiction: Greek territorial waters

36.4356

WGS 84
Primary:

Generated: 2020-01-29T22:52:20+00:00✓⃞

Alternate:⃞

Water Depth (m): 385

Section C: Operational Information

Proposed
Penetration (m):Sediments

Basement

360

0

Total Sediment Thickness (m)360

Total Penetration (m):General Lithologies:
Coring Plan:(Specify or check)

Coarse intracaldera sediments, breccias,
landslides, lavas, muds
2 Holes APC/HLAPC/XCB to refusal; drill ahead in Hole C to 130 mbsf and RCB to 360 mbsf; wirleline logging in HoleC (Tripple Combo, FMS Sonic, VSI)
APC

Wireline Logging
Plan:

360

✓

XCB

✓

RCB

Standard Measurements

Special Tools

✓
✓
✓
✓
✓
✓
✓
✓

Magnetic Susceptibility

WL
Porosity
DensityGamma Ray
Resistivity
Sonic (∆t)
Formation Image (Res)VSP (zero offset)

Borehole Temperature✓✓✓

Re-entry

PCS

Other
tools:

Formation Image(Acoustic)
VSP (walkaway)
LWD

Formation Temperature& Pressure
Other Measurements:

Estimated Days:

Drilling/Coring:

4.3

Logging:

0.9

Total On-site:

5.2

Observatory Plan:

Longterm Borehole Observation Plan/Re-entry Plan

Potential Hazards/
Weather:

Shallow Gas

Complicated Seabed
Condition

Hydrothermal Activity

Preferred weather window

Hydrocarbon

Soft SeabedLandslide and Turbidity
Current

Late autumn,
winter or early
springShallow Water Flow

Currents

Gas Hydrate

Abnormal Pressure

Fracture Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H2S

High Dip Angle

Ice Conditions(e.g., sea-floor cables,
dump sites)

CO2
Sensitive marine
habitat (e.g., reefs,

vents)

Other:

Generated: 2020-01-29T22:52:20+00:00

High winds, dense tourist shipping. Multiple cruise liners in the summer months. No bright spots
indicative of gas to the 400 mbsf on available seismic profiles.

IODP Site Forms

Proposal #:932 - Add

Form 2 - Site Survey Detail

Site #:

Data Type

CSK-05B

Date Form Submitted: 2019-11-22 13:07:02

In SSDB

Details of available data and data that are still to be collected

1a High resolution seismic reflection (primary)yes

Line: GEOMAR_P1006
Position: CDP 20079

1b High resolution seismic seismic reflection (crossing)yes

Line: GEOMAR_P3004
Position: CDP 1259

2a Deep penetration seismic reflection (primary)no2b Deep penetration seismic reflection (crossing)no

3 Seismic Velocityno4 Seismic Gridno5a Refraction (surface)no5b Refraction (bottom)

no6 3.5 kHzno

Data and info see Site CSK-01A

7 Swath bathymetrynoData and info see Site CSK-01A

8a Side looking sonar (surface)noData and info see Site CSK-01A

8b Side looking sonar (bottom)no9 Photography or video

no10 Heat Flowno11a Magnetics

noData and info see Site CSK-01A

11b Gravity

noData and info see Site CSK-01A

12 Sediment cores

yes

Mostly Box corer from 2006 R/V Aegeao expedition of variable length up
to 1 m. Mixture of hemipelagic muds and volcaniclastics

13 Rock samplingno14a Water current datano14b Ice Conditions

no15 OBS microseismicity

no16 Navigationyes

17 Otherno

Generated: 2020-01-29T22:52:20+00:00

Data and info see Site CSK-01A

GEOMAR_P1006.txt, GEOMAR_P3004.txt

IODP Site Forms

Proposal #:Form 4 - Environmental Protection

932 - Add

Site #:

CSK-05B

Date Form Submitted: 2019-11-22 13:07:02

Pollution & Safety Hazard

Comment

1. Summary of operations at site

Two holes (A, B) APC/HLAPC/XCB to refusal including 4 temperature measurements, Hole C:
RCB drilling ahead until 130 mbsf, RCB to 360 mbsf; log as shown on form 1

2. All hydrocarbon occurrences based on
previous DSDP/ODP/IODP drillingnon

3. All commercial drilling in this area that
produced or yielded significant
hydrocarbon showsnon

4. Indications of gas hydrates at thislocationnon

5. Are there reasons to expecthydrocarbon accumulations at this site?

non

6. What "special" precautions will betaken during drilling?

non

7. What abandonment procedures need
to be followed?

non

8. Natural or manmade hazards which
may affect ship's operations

heavy ship traffic in the Caldera but minimized during autumn to early spring

9. Summary: What do you consider the
major risks in drilling at this site?

coarse clastics and lava blocks

Generated: 2020-01-29T22:52:20+00:00

IODP Site Forms

Proposal #:Form 5 - Lithologies

932 - Add

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

Site #:

CSK-05B

Date Form Submitted: 2019-11-22 13:07:02

Age (My)

Assumedvelocity(km/s)

Lithology

Paleo-environment

Avg. accum.
rate (m/My)

Comments

0 - 30

Seismic unit S1;subaerial eruptions
and mass wasting ofcaldera cliffs<0.0020

1.6

volcaniclastics,
turbidites, debris
flows, muds

Intra caldera fill

15,000Interpretation fromJohnston et al. (2015)30 - 88

Seismic unit S2;
mainly submarine
eruptions of Kameni
Volcano0.0036
to0.0020

1.8

volcaniclastics,
muds

Intra-caldera fill35,000Interpretation fromJohnston et al. (2015)

88 - 186

Seismic unit S3: endof LBA eruption;caldera flooding

0.0036

1.9

coarse gravels,
tuffs, debris
avalanches, debris
flows

Intra-caldera fill

>1,000,000

Interpretation fromJohnston et al. (2015)
and Nomikou et al.
(2016a)186 - 360

Pre-S3: Late Bronze
Age eruption (top of
intracaldera tuffs)

3600
years

2.0

Blocky unweldedtuffs, with possible
welded layers andlavas

Intra-caldera fill

>1,000,000

Interpretation ofJohnston et al. (2015)
and Nomikou et al.
(2016a)Generated: 2020-01-29T22:52:20+00:00

CSK-05B
NW

SE

SW

GEOMAR_P3004

NE

TWT(msec)

TWT(msec)

GEOMAR_P1006

a)
NW

b)

1Km

GEOMAR_P1006

SE

500m

SW

GEOMAR_P3004

NE

S1

S3

TWT(msec)

TWT(msec)

S1
S2

c)

1Km

S2
S3

d)

500m

CSK-05B: GEOMAR_P1006, CDP 20079 (a and c); GEOMAR_P3004, CDP 1259 (b and d)
GEOMAR_P1006

CSK-06B
GEOMAR_P3003 CSK-17A

GEOMAR_P3004

CSK-05B

Location map: CSK-05B_location.pdf
SEGY-data data: GEOMAR_P1006.sgy; GEOMAR_P3004.sgy
Navigation data: GEOMAR_P1006.txt, GEOMAR_P3004.txt
Bathymetry: CSK_Bathymetry.grd, CSK_Bathymetry.pdf
Backscatter: CSK_Backscatter.grd, CSK_Backscatter.pdf
Gravity-FreeAir: CSK_Gravity_FreeAir.grd, CSK_Gravity_FreeAir.pdf
Gravity-Bouguer: CSK_Gravity_Bouguer.grf,CSK_Gravity_Bouguer.pdf

Site Information:
Coordinates: 36.4356/25.3806
Water depth: 385 m
Penetration: 360 m

Additional data available:
Magnetic: CSK_Magnetic.grd,CSK_Magnetic.pdf
3.5kHz: Sediment_Proﬁler.zip, contains 3.5kHz proﬁles, do not run along site survey proﬁleIODP Site Forms

932 - Add

Form 1 – General Site Information

Section A: Proposal Information

Proposal Title

Date Form Submitted

Volcanism and tectonics in an island-arc rift environment (VolTecArc): Christiana-Santorini-Kolumbo marine
volcanic field, Greece

2019-11-22 13:07:02

Site-Specific CSK-06B is sited in the northern basin of Santorini caldera. The aim is to penetrate intracaldera seismic units
Objectives with S1, S2, and S3 in order to characterise them and confirm (or not) published hypotheses, as well as topenetrate below unit S3 (probably intracaldera tuff of the LBA eruption). It replaces site CSK-06A in FULL.
Priority(Must include generalobjectives in proposal)

List Previous
Drilling in Area

DSDP hole 378 was drilled in 1975 in the Cretan basin 60 km SSW of Santorini. Onland drilling on Kameni
islands to 200 m depth in 1987-88.

Section B: General Site Information

Site Name:

Area or Location: Santorini caldera (northern basin),

CSK-06B

Aegean Sea, Greece

If site is a reoccupation of an
old DSDP/ODP Site, Please
include former Site#

Latitude:Deg:

Longitude:

Deg:

Distance to Land: 2(km)

25.3752

Coordinate System:
Priority of Site:

Jurisdiction: Greek territorial waters

36.4423

WGS 84
Primary:

Generated: 2020-01-29T22:52:21+00:00⃞

Alternate:✓⃞

Water Depth (m): 383

Section C: Operational Information

Proposed
Penetration (m):Sediments

Basement

360

0

Total Sediment Thickness (m)360

Total Penetration (m):General Lithologies:
Coring Plan:(Specify or check)

Coarse intracaldera sediments, breccias,
landslides, lavas, muds
2 Holes APC/HLAPC/XCB to refusal; drill ahead in Hole C to 130 mbsf and RCB to 360 mbsf; wirleline logging in
Hole C (Tripple Combo, FMS Sonic, VSI)
APC

Wireline Logging
Plan:

360

✓

XCB

✓

RCB

Standard Measurements

Special Tools

✓
✓
✓
✓
✓
✓
✓
✓

Magnetic Susceptibility

WL
Porosity
DensityGamma Ray
Resistivity
Sonic (∆t)
Formation Image (Res)VSP (zero offset)

Borehole Temperature✓✓✓

Re-entry

PCS

Other
tools:

Formation Image(Acoustic)
VSP (walkaway)
LWD

Formation Temperature& Pressure
Other Measurements:

Estimated Days:

Drilling/Coring:

4.3

Logging:

0.9

Total On-site:

5.2

Observatory Plan:

Longterm Borehole Observation Plan/Re-entry Plan

Potential Hazards/
Weather:

Shallow Gas

Complicated Seabed
Condition

Hydrothermal Activity

Preferred weather window

Hydrocarbon

Soft SeabedLandslide and Turbidity
Current

Late autumn,
winter or early
springShallow Water Flow

Currents

Gas Hydrate

Abnormal Pressure

Fracture Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H2S

High Dip Angle

Ice Conditions(e.g., sea-floor cables,
dump sites)

CO2
Sensitive marine
habitat (e.g., reefs,

vents)

Other:

Generated: 2020-01-29T22:52:21+00:00

High winds, dense tourist shipping. Multiple cruise liners in the summer months. No bright spots
indicative of gas to the 400 mbsf on available seismic profiles

IODP Site Forms

Proposal #:932 - Add

Form 2 - Site Survey Detail

Site #:

Data Type

CSK-06B

Date Form Submitted: 2019-11-22 13:07:02

In SSDB

Details of available data and data that are still to be collected

1a High resolution seismic reflection (primary)yes

Line: GEOMAR_P1006
Position: CDP 20648

1b High resolution seismic seismic reflection (crossing)yes

Line: GEOMAR_P3003
Position: CDP 2159

2a Deep penetration seismic reflection (primary)no2b Deep penetration seismic reflection (crossing)no

3 Seismic Velocityno4 Seismic Gridno5a Refraction (surface)no5b Refraction (bottom)

no6 3.5 kHzno

Data and info see Site CSK-01A

7 Swath bathymetrynoData and info see Site CSK-01A

8a Side looking sonar (surface)noData and info see Site CSK-01A

8b Side looking sonar (bottom)no9 Photography or video

no10 Heat Flowno11a Magnetics

noData and info see Site CSK-01A

11b Gravity

noData and info see Site CSK-01A

12 Sediment cores

yes

Mostly Box corer from 2006 R/V Aegeao expedition of variable length up
to 1 m. Mixture of hemipelagic muds and volcaniclastics

13 Rock samplingno14a Water current datano14b Ice Conditions

no15 OBS microseismicity

no16 Navigationyes

17 Otherno

Generated: 2020-01-29T22:52:21+00:00

Data and info see Site CSK-01A

GEOMAR_P1006.txt, GEOMAR_P3003.txt

IODP Site Forms

Proposal #:Form 4 - Environmental Protection

932 - Add

Site #:

CSK-06B

Date Form Submitted: 2019-11-22 13:07:02

Pollution & Safety Hazard

Comment

1. Summary of operations at site

Two holes (A, B) APC/HLAPC/XCB to refusal including 4 temperature measurements, Hole C:
RCB drilling ahead until 130 mbsf, RCB to 360 mbsf; log as shown on form 1

2. All hydrocarbon occurrences based on
previous DSDP/ODP/IODP drillingnon

3. All commercial drilling in this area that
produced or yielded significant
hydrocarbon showsnon

4. Indications of gas hydrates at thislocationnon

5. Are there reasons to expecthydrocarbon accumulations at this site?

non

6. What "special" precautions will betaken during drilling?

non

7. What abandonment procedures need
to be followed?

non

8. Natural or manmade hazards which
may affect ship's operations

heavy ship traffic in the Caldera but but minimized during autumn to early spring

9. Summary: What do you consider the
major risks in drilling at this site?

coarse clastics and lava blocks

Generated: 2020-01-29T22:52:21+00:00

IODP Site Forms

Proposal #:Form 5 - Lithologies

932 - Add

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

Site #:

CSK-06B

Date Form Submitted: 2019-11-22 13:07:02

Age (My)

Assumedvelocity(km/s)

Lithology

Paleo-environment

Avg. accum.
rate (m/My)

Comments

0 - 14

Seismic unit S1:
Subaerial eruptions
and mass wasting
off the caldera cliffs<0.0020

1.6

volcaniclastics,
turbidites, debris
flows, muds

Intra caldera fill

7000

Interpretation fromJohnston et al. (2015)

14 - 76

Seismic unit S2:
mainly submarine
eruptions of Kameni
Volcano0.0036
to0.0020

1.8

volcaniclastics,
muds

Intra-caldera fill38,000Interpretation fromJohnston et al. (2015)76 - 104

Seismic unit S3: endof LBA eruption;caldera flooding

0.0036

1.9

Coarse gravels,
tuffs, debris
avalanches, debris
flows

Intra-caldera fill

>1,000,000

Interpretation fromJohnston et al. (2015)
and Nomikou et al.
(2016a)104 - 360

Pre-S3: Late Bronze
Age eruption (top of
intracaldera tuffs)

3600

2.0

Blocky unweldedtuffs, with possible
welded layers andlavas

Intra-caldera fill

>1,000,000

Interpretation ofJohnston et al. (2015)
and Nomikou et al.
(2016a)Generated: 2020-01-29T22:52:21+00:00

CSK-06B
NW

SE

TWT(msec)

GEOMAR_P3003

TWT(msec)

GEOMAR_P1006

a)
NW

1Km

GEOMAR_P1006

b)

b)

SE

500m

GEOMAR_P3003
S1

S3

S2

c)

S2

TWT(msec)

TWT(msec)

S1

1Km

d)

S3

d)

500m

CSK-06B: GEOMAR_P1006, CDP 20648 (a and c); GEOMAR_P3003, CDP 2159 (b and d)
GEOMAR_P1006

CSK-06B
GEOMAR_P3003 CSK-17A

GEOMAR_P3004

CSK-05B

Files to be uploaded to SSDB:
Location map: CSK-06B_location.pdf
SEGY-data data: GEOMAR_P1006.sgy; GEOMAR_P3003.sgy
Navigation data: GEOMAR_P1006.txt, GEOMAR_P3003.txt
Bathymetry: CSK_Bathymetry.grd, CSK_Bathymetry.pdf
Backscatter: CSK_Backscatter.grd, CSK_Backscatter.pdf
Gravity-FreeAir: CSK_Gravity_FreeAir.grd, CSK_Gravity_FreeAir.pdf
Gravity-Bouguer: CSK_Gravity_Bouguer.grf,CSK_Gravity_Bouguer.pdf

Site Information:
Coordinates: 36.4423/25.3752
Water depth: 383 m
Penetration: 360 m

Additional data available:
Magnetic: CSK_Magnetic.grd,CSK_Magnetic.pdf
3.5kHz: Sediment_Proﬁler.zip, contains 3.5kHz proﬁles, do not run along site survey proﬁleIODP Site Forms

932 - Add

Form 1 – General Site Information

Section A: Proposal Information

Proposal Title

Date Form Submitted

Volcanism and tectonics in an island-arc rift environment (VolTecArc): Christiana-Santorini-Kolumbo marine
volcanic field, Greece

2019-11-22 13:07:02

Site-Specific CSK-07B is sited in the southern basin of Santorini caldera. The aim is to penetrate intracaldera seismic units
Objectives with S1, S2, and S3 in order to characterise them, as well as to penetrate below unit S3 (probable intracaldera tuffof the LBA eruption). This site is complementary to sites CSK-05B/06B in the northern caldera basin, as
Priority

together they will provide a complete understanding of the caldera fill and collapse history. It replaces site
(Must include general
CSK-07A in FULL.
objectives in proposal)

List Previous
Drilling in Area

DSDP hole 378 was drilled in 1975 in the Cretan basin 60 km SSW of Santorini. Onland drilling on Kameni
islands to 200 m depth in 1987-88.

Section B: General Site Information

Site Name:

Area or Location: Santorini caldera (southern basin),

CSK-07B

Aegean Sea, Greece

If site is a reoccupation of an
old DSDP/ODP Site, Please
include former Site#

Latitude:Deg:

Longitude:

Deg:

Distance to Land: 1(km)

25.41713

Coordinate System:
Priority of Site:

Jurisdiction: Greek territorial waters

36.38895

WGS 84
Primary:

Generated: 2020-01-29T22:52:21+00:00✓⃞

Alternate:⃞

Water Depth (m): 292

Section C: Operational Information

Proposed
Penetration (m):Sediments

Basement

360

0

Total Sediment Thickness (m)360

Total Penetration (m):General Lithologies:
Coring Plan:(Specify or check)

Coarse intracaldera sediments, breccias,
landslides, lavas, muds
2 Holes APC/HLAPC/XCB to refusal, followed by drill ahead to 175 mbsf and RCB to 360 mbsf, wirleline logging in
RCB Hole C (Tripple Combo, FMS Sonic, VSI)
APC

Wireline Logging
Plan:

360

✓

XCB

✓

RCB

Standard Measurements

Special Tools

✓
✓
✓
✓
✓
✓
✓
✓

Magnetic Susceptibility

WL
Porosity
DensityGamma Ray
Resistivity
Sonic (∆t)
Formation Image (Res)VSP (zero offset)

Borehole Temperature✓✓✓

Re-entry

PCS

Other
tools:

Formation Image(Acoustic)
VSP (walkaway)
LWD

Formation Temperature& Pressure
Other Measurements:

Estimated Days:

Drilling/Coring:

4.4

Logging:1

Total On-site:

5.4

Observatory Plan:

Longterm Borehole Observation Plan/Re-entry Plan

Potential Hazards/
Weather:

Shallow Gas

Complicated Seabed
Condition

Hydrothermal Activity

Preferred weather window

Hydrocarbon

Soft SeabedLandslide and Turbidity
Current

Late autumn,
winter or early
springShallow Water Flow

Currents

Gas Hydrate

Abnormal Pressure

Fracture Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H2S

High Dip Angle

Ice Conditions(e.g., sea-floor cables,
dump sites)

CO2
Sensitive marine
habitat (e.g., reefs,

vents)

Other:

Generated: 2020-01-29T22:52:21+00:00

High winds, dense tourist shipping. Multiple cruise liners in the summer months. No bright spots
indicative of gas on seismic profiles.

IODP Site Forms

Proposal #:932 - Add

Form 2 - Site Survey Detail

Site #:

Data Type

CSK-07B

Date Form Submitted: 2019-11-22 13:07:02

In SSDB

Details of available data and data that are still to be collected

1a High resolution seismic reflection (primary)yes

Line: GEOMAR_P1006
Position: CDP 15234

1b High resolution seismic seismic reflection (crossing)yes

Line: SBL20060504_052810-REPROC
Position: CDP 234

2a Deep penetration seismic reflection (primary)no2b Deep penetration seismic reflection (crossing)no

3 Seismic Velocityno4 Seismic Gridno5a Refraction (surface)no5b Refraction (bottom)

no6 3.5 kHzno

Data and info see Site CSK-01A

7 Swath bathymetrynoData and info see Site CSK-01A

8a Side looking sonar (surface)noData and info see Site CSK-01A

8b Side looking sonar (bottom)no9 Photography or video

no10 Heat Flowno11a Magnetics

noData and info see Site CSK-01A

11b Gravity

noData and info see Site CSK-01A

12 Sediment cores

yes

Mostly Box corer from 2006 R/V Aegeao expedition of variable length up
to 1 m. Mixture of hemipelagic muds and volcaniclastics

13 Rock samplingno14a Water current datano14b Ice Conditions

no15 OBS microseismicity

no16 Navigationyes

17 Otherno

Generated: 2020-01-29T22:52:21+00:00

Data and info see Site CSK-01A

GEOMAR_P1006.txt, 20060504_052810-REPROCIODP Site Forms

Proposal #:Form 4 - Environmental Protection

932 - Add

Site #:

CSK-07B

Date Form Submitted: 2019-11-22 13:07:02

Pollution & Safety Hazard

Comment

1. Summary of operations at site

Two holes (A, B) APC/HLAPC to refusal including 4 temperature measurements, each followed by
XCB to refusal; Hole C: RCB drilling ahead until 175 mbsf, RCB to 360 mbsf, log as shown on form
1

2. All hydrocarbon occurrences based on
previous DSDP/ODP/IODP drillingnon

3. All commercial drilling in this area that
produced or yielded significant
hydrocarbon showsnon

4. Indications of gas hydrates at thislocationnon

5. Are there reasons to expecthydrocarbon accumulations at this site?

non

6. What "special" precautions will betaken during drilling?

non

7. What abandonment procedures need
to be followed?

non

8. Natural or manmade hazards which
may affect ship's operations

heavy ship traffic in the Caldera but minimized during autumn to early spring

9. Summary: What do you consider the
major risks in drilling at this site?

coarse clastics and lava blocks

Generated: 2020-01-29T22:52:21+00:00

IODP Site Forms

Proposal #:Form 5 - Lithologies

932 - Add

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

Site #:

CSK-07B

Date Form Submitted: 2019-11-22 13:07:02

Age (My)

Assumedvelocity(km/s)

Lithology

Paleo-environment

Avg. accum.
rate (m/My)

Comments

0 - 20

Seismic unit S1:subaerial eruptions
and mass wasting of
the caldera cliffs<0.0020

1.6

volcaniclastics,
turbidites, debris
flows, muds

intra caldera fill

10,000Interpretation fromJohnston et al. (2015)20 - 77

Seismic unit S2:
mainly submarine
eruptions of Kameni
Volcano0.0036
to0.0020

1.8

volcaniclastics,
muds

Intra-caldera fill36,000Interpretation fromJohnston et al. (2015)

77 - 218

Seismic unit S3: endof LBA eruption;caldera flooding

0.0036

1.9

Coarse gravels,
tuffs, debris
avalanches, debris
flows

Intra-caldera fill

>1,000,000

Interpretation fromJohnston et al. (2015)
and Nomikou et al.
(2016a)218 - 360

Sub-S3: Late
Bronze Age eruption(top of intracaldera
tuffs)

0.00362.0

Blocky unweldedtuffs, with possible
welded layers andlavas

Intra-caldera fill

>1,000,000

Interpretation ofJohnston et al. (2015)

Generated: 2020-01-29T22:52:21+00:00

CSK-07B
NE

SSW

20060504_052810REPROC

NNE

TWT(msec)SW

TWT(msec)

GEOMAR_P1006

a)
NE
NE

GEOMAR_P1006

500m

b)

SW

SSW

TWT(msec)

TWT(msec)

S1
S2
S3

c)

500m

500m

20060504_052810REPROC
S1
S2

NNE

S3

d)

500m

CSK-07B: GEOMAR_P1006, CDP 15324 (a and c); 20060504_052810-REPROC, CDP 234 (b and d)
20060504_052810
20060504_044615
20060429_134104
GEOMAR_P1006

CSK-07B

CSK-08B
CSK-18A

Files to be uploaded to SSDB:
Location map: CSK-07B_location.pdf
SEGY-data data: GEOMAR_P1006.sgy, 20060504_052810-REPROC.sgy
Navigation data: GEOMAR_P1006.txt, 20060504_052810-REPROC.txt
Bathymetry: CSK_Bathymetry.grd, CSK_Bathymetry.pdf
Backscatter: CSK_Backscatter.grd, CSK_Backscatter.pdf
Gravity-FreeAir: CSK_Gravity_FreeAir.grd, CSK_Gravity_FreeAir.pdf
Gravity-Bouguer: CSK_Gravity_Bouguer.grf,CSK_Gravity_Bouguer.pdf

Site Information:
Coordinates: 36.38895/
25.41713
Water depth: 292 m
Penetration: 360 m

Additional data available:
Magnetic: CSK_Magnetic.grd, CSK_Magnetic.pdf
3.5kHz: Sediment_Proﬁler.zip contains 3.5kHz proﬁles, do not run along site survey proﬁleIODP Site Forms

932 - Add

Form 1 – General Site Information

Section A: Proposal Information

Proposal Title

Date Form Submitted

Volcanism and tectonics in an island-arc rift environment (VolTecArc): Christiana-Santorini-Kolumbo marine
volcanic field, Greece

2019-11-22 13:07:02

Site-Specific CSK-08B is sited in the southern basin of Santorini caldera. The aim is to penetrate intracaldera seismic units
Objectives with S1, S2, and S3 in order to characterise them, as well as to penetrate below unit S3 (probable intracaldera tuffof the LBA eruption). This site is complementary to sites CSK-05B/06B in the northern caldera basin, as
Priority

together they will provide a complete understanding of the caldera fill and collapse history. Site CSK-08(Must include generalreplaces CSK-08A in FULL.
objectives in proposal)

List Previous
Drilling in Area

DSDP hole 378 was drilled in 1975 in the Cretan basin 60 km SSW of Santorini. Onland drilling on Kameni
islands to 200 m depth in 1987-88.

Section B: General Site Information

Site Name:

Area or Location: Santorini caldera (southern basin),

CSK-08B

Aegean Sea, Greece

If site is a reoccupation of an
old DSDP/ODP Site, Please
include former Site#

Latitude:Deg:

Longitude:

Deg:

Distance to Land: 1(km)

25.40606

Coordinate System:
Priority of Site:

Jurisdiction: Greek territorial waters

36.38161

WGS 84
Primary:

Generated: 2020-01-29T22:52:21+00:00⃞

Alternate:✓⃞

Water Depth (m): 293

Section C: Operational Information

Proposed
Penetration (m):Sediments

Basement

375

0Total Sediment Thickness (m)375

Total Penetration (m):General Lithologies:
Coring Plan:(Specify or check)

Coarse intracaldera sediments, breccias,
landslides, lavas, muds
2 Holes APC/HLAPC/XCB to refusal, followed by drill ahead to 175 mbsf and RCB to 375 mbsf, wirleline logging in
RCB Hole C (Tripple Combo, FMS Sonic, VSI)
APC

Wireline Logging
Plan:

375

✓

XCB

✓

RCB

Standard Measurements

Special Tools

✓
✓
✓
✓
✓
✓
✓
✓

Magnetic Susceptibility

WL
Porosity
DensityGamma Ray
Resistivity
Sonic (∆t)
Formation Image (Res)VSP (zero offset)

Borehole Temperature✓✓✓

Re-entry

PCS

Other
tools:

Formation Image(Acoustic)
VSP (walkaway)
LWD

Formation Temperature& Pressure
Other Measurements:

Estimated Days:

Drilling/Coring:

4.5

Logging:1

Total On-site:

5.5

Observatory Plan:

Longterm Borehole Observation Plan/Re-entry Plan

Potential Hazards/
Weather:

Shallow Gas

Complicated Seabed
Condition

Hydrothermal Activity

Preferred weather window

Hydrocarbon

Soft SeabedLandslide and Turbidity
Current

Late autumn,
winter or early
springShallow Water Flow

Currents

Gas Hydrate

Abnormal Pressure

Fracture Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H2S

High Dip Angle

Ice Conditions(e.g., sea-floor cables,
dump sites)

CO2
Sensitive marine
habitat (e.g., reefs,

vents)

Other:

Generated: 2020-01-29T22:52:21+00:00

High winds, dense tourist shipping. Multiple cruise liners in the summer months. No bright spots
indicative of gas on seismic profiles.

IODP Site Forms

Proposal #:932 - Add

Form 2 - Site Survey Detail

Site #:

Data Type

CSK-08B

Date Form Submitted: 2019-11-22 13:07:02

In SSDB

Details of available data and data that are still to be collected

1a High resolution seismic reflection (primary)yes

Line: GEOMAR_P1006
Position: CDP 14501

1b High resolution seismic seismic reflection (crossing)yes

Line: SBL20060504_044615-REPROC
Position: CDP 801

2a Deep penetration seismic reflection (primary)no2b Deep penetration seismic reflection (crossing)no

3 Seismic Velocityno4 Seismic Gridno5a Refraction (surface)no5b Refraction (bottom)

no6 3.5 kHzyes

Data and info see Site CSK-01A

7 Swath bathymetryyes

Data and info see Site CSK-01A

8a Side looking sonar (surface)noData and info see Site CSK-01A

8b Side looking sonar (bottom)no9 Photography or video

no10 Heat Flowno11a Magnetics

noData and info see Site CSK-01A

11b Gravity

noData and info see Site CSK-01A

12 Sediment cores

yes

Mostly Box corer from 2006 R/V Aegeao expedition of variable length up
to 1 m. Mixture of hemipelagic muds and volcaniclastics

13 Rock samplingno14a Water current datano14b Ice Conditions

no15 OBS microseismicity

no16 Navigationyes

17 Otherno

Generated: 2020-01-29T22:52:21+00:00

Data and info see Site CSK-01A

GEOMAR_P1006.txt, 20060504_044615-REPROC.txt

IODP Site Forms

Proposal #:Form 4 - Environmental Protection

932 - Add

Site #:

CSK-08B

Date Form Submitted: 2019-11-22 13:07:02

Pollution & Safety Hazard

Comment

1. Summary of operations at site

Two holes (A, B) APC/HLAPC to refusal including 4 temperature measurements, each followed by
XCB to refusal; Hole C: RCB drilling ahead until 175 mbsf, RCB to 375 mbsf, log as shown on form
1

2. All hydrocarbon occurrences based on
previous DSDP/ODP/IODP drillingnon

3. All commercial drilling in this area that
produced or yielded significant
hydrocarbon showsnon

4. Indications of gas hydrates at thislocationnon

5. Are there reasons to expecthydrocarbon accumulations at this site?

non

6. What "special" precautions will betaken during drilling?

non

7. What abandonment procedures need
to be followed?

non

8. Natural or manmade hazards which
may affect ship's operations

heavy ship traffic in the Caldera but minimized during autumn to early spring

9. Summary: What do you consider the
major risks in drilling at this site?

coarse clastics and lava blocks

Generated: 2020-01-29T22:52:21+00:00

IODP Site Forms

Proposal #:Form 5 - Lithologies

932 - Add

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

Site #:

CSK-08B

Date Form Submitted: 2019-11-22 13:07:02

Age (My)

Assumedvelocity(km/s)

Lithology

Paleo-environment

Avg. accum.
rate (m/My)

Comments

0 - 16

Seismic unit S1:subaerial eruptions
and mass wasting of
the caldera cliffs<0.0020

1.6

volcaniclastics,
turbidites, debris
flows, muds

intra caldera fill

8000

Interpretation fromJohnston et al. (2015)16 - 75

Sesimic unit S2:
mainly submarine
eruptions of Kameni
Volcano0.0036
to0.0020

1.8

volcaniclastics,
muds

Intra-caldera fill36,000Interpretation ofJohnston et al. (2015)

75 - 142

Seismic unit S3: End
of LBA eruption;caldera flooding

0.0036

1.9

Coarse gravels,
tuffs, debris
avalanches, debris
flows

Intra-caldera fill

>1,000,000

Interpretation fromJohnston et al. (2015)

142 - 375

Pre-S3: Late Bronze
Age eruption (top of
intracaldera tuff)

0.00362.0

Blocky unweldedtuffs, with possible
welded layers or
lavas

Intra-caldera fill

>1,000,000

Interpretation ofJohnston et al. (2015)
and Nomikou et al.
(2016a)Generated: 2020-01-29T22:52:21+00:00

CSK-08B
NE

SW

NW
SE
20060504_044615REPROC

TWT(msec)

TWT(msec)

GEOMAR_P1006

a)

b)

500m

NE
NE

GEOMAR_P1006

SW

TWT(msec)

TWT(msec)

S1
S2
S3

c)

500m

500m

NW
SE
20060504_044615REPROC
S1
S2
S3

d)

500m

CSK-08B: GEOMAR_P1006, CDP 14501 (a and c); 20060504_044615-REPROC, CDP 801 (b and d)
20060504_052810
20060504_044615
20060429_134104
GEOMAR_P1006

CSK-07B

CSK-08B
CSK-18A

Files to be uploaded to SSDB:
Location map: CSK-08B_location.pdf
SEGY-data data: GEOMAR_P1006.sgy, 20060504_044615-REPROC.sgy
Navigation data: GEOMAR_P1006.txt, 20060504_044615-REPROC.txt
Bathymetry: CSK_Bathymetry.grd, CSK_Bathymetry.pdf
Backscatter: CSK_Backscatter.grd, CSK_Backscatter.pdf
Gravity-FreeAir: CSK_Gravity_FreeAir.grd, CSK_Gravity_FreeAir.pdf
Gravity-Bouguer: CSK_Gravity_Bouguer.grf,CSK_Gravity_Bouguer.pdf

Site Information:
Coordinates: 36.38161/
25.40606
Water depth: 293 m
Penetration: 375 m

Additional data available:
Magnetic: CSK_Magnetic.grd, CSK_Magnetic.pdf
3.5kHz: Sediment_Proﬁler.zip, contains 3.5kHz proﬁles, do not run along site survey proﬁleIODP Site Forms

932 - Add

Form 1 – General Site Information

Section A: Proposal Information

Proposal Title

Date Form Submitted

Volcanism and tectonics in an island-arc rift environment (VolTecArc): Christiana-Santorini-Kolumbo marine
volcanic field, Greece

2019-11-22 13:07:02

Site-Specific CSK-09A is sited in the Anafi Basin. The aim is to penetrate the entire volcano-sedimentary fill of this basin
Objectives with as far as the Alpine basement. The basin potentially records the full volcanic history of Santorini (and any
older centres) since rift inception, but not of Kolumbo Volcano. The hole will reconstruct the subsidence andPriority

sedimentary history of this basin, to compare with that of the Anhydros Basin. It will transect all six seismic(Must include generalunits present in the basin (B1 to B6).
objectives in proposal)

List Previous
Drilling in Area

DSDP hole 378 was drilled in 1975 in the Cretan basin 60 km SSW of Santorini

Section B: General Site Information

Site Name:

Area or Location: Anafi Basin, Aegean Sea, Greece

CSK-09A

If site is a reoccupation of an
old DSDP/ODP Site, Please
include former Site#

Latitude:Deg:

Longitude:

Deg:

Distance to Land: 9(km)

25.7613

Coordinate System:
Priority of Site:

Jurisdiction: Greek territorial waters

36.5656

WGS 84
Primary:

Generated: 2020-01-29T22:52:21+00:00✓⃞

Alternate:⃞

Water Depth (m): 694

Section C: Operational Information

Proposed
Penetration (m):Sediments

Basement585

10

Total Sediment Thickness (m)585

Total Penetration (m):General Lithologies:
Coring Plan:(Specify or check)

Limestone, schist or granite

Muds, volcaniclastics, debris flows, turbidites

3 Holes APC/HLAPC to refusal, each followed by XCB to 595 mbsf including 10 meters into basement or until refusal,
wireline logging in Hole C (Tripple Combo, FMS Sonic, VSI)
APC

Wireline Logging
Plan:

595

✓

XCB

✓

RCB

Standard Measurements

Special Tools

✓
✓
✓
✓
✓
✓
✓
✓

Magnetic Susceptibility

WL
Porosity
DensityGamma Ray
Resistivity
Sonic (∆t)
Formation Image (Res)VSP (zero offset)

Borehole Temperature✓✓

Re-entry

PCS

Other
tools:

Formation Image(Acoustic)
VSP (walkaway)
LWD

Formation Temperature& Pressure
Other Measurements:

Estimated Days:

Drilling/Coring:

9.5

Logging:

1.3

Total On-site:

10.8

Observatory Plan:

Longterm Borehole Observation Plan/Re-entry Plan

Potential Hazards/
Weather:

Shallow Gas

Complicated Seabed
Condition

Hydrothermal Activity

Preferred weather window

Hydrocarbon

Soft SeabedLandslide and Turbidity
Current

Late autumn,
winter or early
springShallow Water Flow

Currents

Gas Hydrate

Abnormal Pressure

Fracture Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H2S

High Dip Angle

Ice Conditions(e.g., sea-floor cables,
dump sites)

CO2
Sensitive marine
habitat (e.g., reefs,

vents)

Other:

Generated: 2020-01-29T22:52:21+00:00

High winds, dense tourist shipping

IODP Site Forms

Proposal #:932 - Add

Form 2 - Site Survey Detail

Site #:

Data Type

CSK-09A

Date Form Submitted: 2019-11-22 13:07:02

In SSDB

Details of available data and data that are still to be collected

1a High resolution seismic reflection (primary)yes

Line: HH06-15-REPROC
Position: CDP 1067

1b High resolution seismic seismic reflection (crossing)yes

Line: HH06-09-REPROC
Position: CDP 3403

2a Deep penetration seismic reflection (primary)no2b Deep penetration seismic reflection (crossing)no

3 Seismic Velocityno4 Seismic Gridno5a Refraction (surface)no5b Refraction (bottom)

no6 3.5 kHzyes

Data and info see Site CSK-01A

7 Swath bathymetrynoData and info see Site CSK-01A

8a Side looking sonar (surface)noData and info see Site CSK-01A

8b Side looking sonar (bottom)no9 Photography or video

no10 Heat Flowno11a Magnetics

noData and info see Site CSK-01A

11b Gravity

noData and info see Site CSK-01A

12 Sediment coresyes~2m long gravity core (POS513/20), 9 km from site position showing soft
hemipelagic muds with carbonate clasts, some cm thick intercalated ash
layers and two dm-scaled tephra layers unto coarse ash and fine lapilli (upto 1 cm); Sedimentation rate ~9 cm/ka.

13 Rock samplingno14a Water current datano14b Ice Conditions

no15 OBS microseismicity

no16 Navigationyes

17 Otherno

Generated: 2020-01-29T22:52:21+00:00

Data and info see Site CSK-01A

HH06-15-REPROC.txt, HH06-09-REPROC.txt

IODP Site Forms

Proposal #:Form 4 - Environmental Protection

932 - Add

Site #:

CSK-09A

Date Form Submitted: 2019-11-22 13:07:02

Pollution & Safety Hazard

Comment

1. Summary of operations at site

Tripple APC/HLAPC (Holes A, B, C) to refusal including 4 temperature measurements, eachfollowed by XCB to 595 mbsf including 10 meters of basement or until refusal, log as shown on
form 1

2. All hydrocarbon occurrences based on
previous DSDP/ODP/IODP drillingno3. All commercial drilling in this area that
produced or yielded significant
hydrocarbon showsnon

4. Indications of gas hydrates at thislocationnon

5. Are there reasons to expecthydrocarbon accumulations at this site?

non

6. What "special" precautions will betaken during drilling?

non

7. What abandonment procedures need
to be followed?

non

8. Natural or manmade hazards which
may affect ship's operations

sailing traffic may be existent but minimized during autumn to early spring

9. Summary: What do you consider the
major risks in drilling at this site?

Target drill depth for XCB in Holes A and B may be to deep for XCB only but is covered by RCB in
Hole C

Generated: 2020-01-29T22:52:21+00:00

IODP Site Forms

Proposal #:Form 5 - Lithologies

932 - Add

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

Site #:

CSK-09A

Date Form Submitted: 2019-11-22 13:07:02

Age (My)

Assumedvelocity(km/s)

Lithology

Paleo-environment

Avg. accum.
rate (m/My)

Comments

Pleistocene/
Holocene

1.6

hemipelagic muds,
volcaniclastics,
turbidites

filled submarine riftbasin

140

lithology similar like ingravity core;interpretation after
Nomikou et al. (2018)130

chaotic layering
implicate kind of
mass transport
deposits and highsedimentation rate
due to tectonics?;
interpretation after
Nomikou et al. (2018)

120

More turbiditic
deposits andsubhorizontal
layering, tectonics?
Interpretation
Nomikou et al. (2018)

120

Chaotic layering
implicates masstransport deposits
and high
sedimentation rate
due to tectonics?
Interpretation
Nomikou et al. (2018)120

steep bedding
assumes tectonics
after initial fill.
Interpretation
Nomikou et al. (2018)
initial filling sequenceof the rift with mixed
volcaniclastic andcontinental material.
Interpretation
Nomikou et al. (2018)

0 - 34

Seismic unit B6:
horizontal dipping
beds andunconformity into B5

34 - 248

Seismic unit B5:
subhorizontal
dipping beds,
several stronger
reflectors distributed
within the unit;
chaotic layering in
the upper part?

248 - 346

Seismic unit B4 with
subhorizontal
dipping beds,
several stronger
reflectors distributed
within the unit

346 - 461

Seismic unit B3.
Subhorizontal
bedding, chaotic
layer, MTD?
Unconformity onto
steep layered unit
B2.

Early
Pleistocene/
Pliocene

461 - 507

Seismic unit B2

Pleistocene

Early?
Pleistocene

1.8

hemipelagic muds,
volcaniclastics,
turbidites, MTD´s?

2.0

hemipelagic muds,
volcaniclastics,
turbidites, MTD´s?

filled submarine riftbasin

filled submarine riftbasinhemipelagic muds,
volcaniclastics,
turbidites, MTD´s?

filled submarine riftbasin

earlyPleistocene?/ 2.4
Plioceneturbidites,
hemipelagics,
volcaniclastics,
MTD´sfilled submarine riftbasin

507 - 585

Seismic unit B1;
unconformity into
continental
basement

Pliocene

2.6

MTD´s, sands andgravel, turbidites,
hemipelagic muds,
volcaniclastics

submarine tocontinental; initial
filling of a rift basin

110585 - 595

continental
basement

Mesozoic

3.0

limestone, shists,
granites

continental
basement??

Generated: 2020-01-29T22:52:21+00:00

2.1

CSK-09A
NW

SE

WSW

ENE

HH06-09-REPROC

TWT(msec)

TWT(msec)

HH06-15-REPROC

a)

b)

1Km

NW

HH06-15-REPROC

SE

WSW

B5
B2

B4
B3

c)

BS

B1
1Km

ENE

HH06-09-REPROC

B5

TWT(msec)

TWT(msec)

B6

1Km

B6

B4
B3

d)

B1

B2

BS

1Km

CSK-09A: HH06-15-REPROC, CDP 1067 (a and c); HH06-09-REPROC, CDP 3403 (b and d)
GEOMAR_P5017

HH06-15

HH06-04
CSK-09A

HH06-09

CSK-19A
CSK-10A

Files to be uploaded to SSDB:
Location map: CSK-09A-10A_location.pdf
SEGY-data data: HH06-15-REPROC.sgy, HH06-09-REPROC.sgy
Navigation data: HH06-15-REPROC.txt, HH06-09-REPROC.txt
Bathymetry: CSK_Bathymetry.grd, CSK_Bathymetry.pdf
Backscatter: CSK_Backscatter.grd, CSK_Backscatter.pdf
Gravity-FreeAir: CSK_Gravity_FreeAir.grd, CSK_Gravity_FreeAir.pdf
Gravity-Bouguer: CSK_Gravity_Bouguer.grf,CSK_Gravity_Bouguer.pdf

Site Information:
Coordinates: 36.5656/25.7613
Water depth: 694 m
Penetration: 595 m

Additional data available:
Magnetic: CSK_Magnetic.grd,CSK_Magnetic.pdf
3.5kHz: Sediment_Proﬁler.zip, contains 3.5kHz proﬁles, do not run along site survey proﬁleIODP Site Forms

932 - Add

Form 1 – General Site Information

Section A: Proposal Information

Proposal Title

Date Form Submitted

Volcanism and tectonics in an island-arc rift environment (VolTecArc): Christiana-Santorini-Kolumbo marine
volcanic field, Greece

2019-11-22 13:07:02

Site-Specific CSK-10A is sited in the Anafi Basin. The aim is to penetrate the entire volcano-sedimentary fill of this basin
Objectives with as far as the Alpine basement. The basin potentially records the full volcanic history of Santorini (and any
older centres) since rift inception, but not of Kolumbo Volcano. The hole will reconstruct the subsidence andPriority

sedimentary history of this basin, to compare with that of the Anhydros Basin. It will transect the topmost five(Must include generalof the six seismic units present in the basin (B2 to B6).
objectives in proposal)

List Previous
Drilling in Area

DSDP hole 378 was drilled in 1975 in the Cretan basin 60 km SSW of Santorini

Section B: General Site Information

Site Name:

Area or Location: Anafi Basin, Aegean Sea, Greece

CSK-10A

If site is a reoccupation of an
old DSDP/ODP Site, Please
include former Site#

Latitude:Deg:

Longitude:

Deg:

Distance to Land: 10(km)

25.7714

Coordinate System:
Priority of Site:

Jurisdiction: Greek territorial waters

36.5494

WGS 84
Primary:

Generated: 2020-01-29T22:52:21+00:00⃞

Alternate:✓⃞

Water Depth (m): 672

Section C: Operational Information

Proposed
Penetration (m):Sediments

Basement367

10

Total Sediment Thickness (m)367

Total Penetration (m):General Lithologies:
Coring Plan:(Specify or check)

Limestone, schist or granite

Muds, volcaniclastics, debris flows, turbidites

3 Holes APC/HLAPC to refusal, each followed by XCB to 377 mbsf including 10 meters into basement or until refusal,
wireline logging in Hole C (Tripple Combo, FMS Sonic, VSI)
APC

Wireline Logging
Plan:

377

✓

XCB

✓

RCB

Standard Measurements

Special Tools

✓
✓
✓
✓
✓
✓
✓
✓

Magnetic Susceptibility

WL
Porosity
DensityGamma Ray
Resistivity
Sonic (∆t)
Formation Image (Res)VSP (zero offset)

Borehole Temperature✓✓

Re-entry

PCS

Other
tools:

Formation Image(Acoustic)
VSP (walkaway)
LWD

Formation Temperature& Pressure
Other Measurements:

Estimated Days:

Drilling/Coring:

6.4

Logging:1

Total On-site:

7.4

Observatory Plan:

Longterm Borehole Observation Plan/Re-entry Plan

Potential Hazards/
Weather:

Shallow Gas

Complicated Seabed
Condition

Hydrothermal Activity

Preferred weather window

Hydrocarbon

Soft SeabedLandslide and Turbidity
Current

Late autumn,
winter or early
springShallow Water Flow

Currents

Gas Hydrate

Abnormal Pressure

Fracture Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H2S

High Dip Angle

Ice Conditions(e.g., sea-floor cables,
dump sites)

CO2
Sensitive marine
habitat (e.g., reefs,

vents)

Other:

Generated: 2020-01-29T22:52:21+00:00

High winds, dense tourist shipping

IODP Site Forms

Proposal #:932 - Add

Form 2 - Site Survey Detail

Site #:

Data Type

CSK-10A

Date Form Submitted: 2019-11-22 13:07:02

In SSDB

Details of available data and data that are still to be collected

1a High resolution seismic reflection (primary)yes

Line: HH06-15-REPROC
Position: CDP 906

1b High resolution seismic seismic reflection (crossing)yes

Line: HH06-04-REPROC
Position: CDP 1755

2a Deep penetration seismic reflection (primary)no2b Deep penetration seismic reflection (crossing)no

3 Seismic Velocityno4 Seismic Gridno5a Refraction (surface)no5b Refraction (bottom)

no6 3.5 kHzno

Data and info see Site CSK-01A

7 Swath bathymetrynoData and info see Site CSK-01A

8a Side looking sonar (surface)noData and info see Site CSK-01A

Data and info see Site CSK-01A

8b Side looking sonar (bottom)
9 Photography or video

no10 Heat Flowno11a Magnetics

noData and info see Site CSK-01A

11b Gravity

noData and info see Site CSK-01A

12 Sediment coresyes~2m long gravity core (POS513/20), 8 km from site position showing soft
hemipelagic muds with carbonate clasts, some cm thick intercalated ash
layers and two dm-scaled tephra layers unto coarse ash and fine lapilli (upto 1 cm); Sedimentation rate ~9 cm/ka.

13 Rock samplingno14a Water current datano14b Ice Conditions

no15 OBS microseismicity

no16 Navigationyes

17 Otherno

Generated: 2020-01-29T22:52:21+00:00

HH06-15-REPROC.txt, HH06-04-REPROC.txt

IODP Site Forms

Proposal #:Form 4 - Environmental Protection

932 - Add

Site #:

CSK-10A

Date Form Submitted: 2019-11-22 13:07:02

Pollution & Safety Hazard

Comment

1. Summary of operations at site

Tripple APC/HLAPC (Holes A, B, C) to refusal including 4 temperature measurements, eachfollowed by XCB to 377 mbsf including 10 meters of basement or until refusal, log as shown on
form 1

2. All hydrocarbon occurrences based on
previous DSDP/ODP/IODP drillingnon

3. All commercial drilling in this area that
produced or yielded significant
hydrocarbon showsnon

4. Indications of gas hydrates at thislocationnon

5. Are there reasons to expecthydrocarbon accumulations at this site?

non

6. What "special" precautions will betaken during drilling?

non

7. What abandonment procedures need
to be followed?

non

8. Natural or manmade hazards which
may affect ship's operations

sailing traffic may be existent but minimized during autumn to early spring

9. Summary: What do you consider the
major risks in drilling at this site?

Target drill depth for XCB in Holes A and B may be to deep for XCB only but is covered by RCB in
Hole C

Generated: 2020-01-29T22:52:21+00:00

IODP Site Forms

Proposal #:Form 5 - Lithologies

932 - Add

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

Site #:

CSK-10A

Date Form Submitted: 2019-11-22 13:07:02

Age (My)

Assumedvelocity(km/s)

Lithology

Paleo-environment

Avg. accum.
rate (m/My)

Comments

0 - 19

Seismic unit B6:
horizontal dipping
beds andunconformity into B5

Pleistocene/
Holocene

1.6

hemipelagic muds,
volcaniclastics,
turbidites

filled submarine riftbasin

110lithology similar like ingravity core;interpretation
Nomikou et al. (2018)19 - 217

Seismic unit B5:
subhorizontal
dipping beds,
several stronger
reflectors distributed
within the unit;
chaotic layering in
the upper part?

Pleistocene

1.8

hemipelagic muds,
volcaniclastics,
turbidites, MTD´s?

filled submarine riftbasin

100Interpretation
Nomikou et al. (2018)

217 - 255

Seismic unit B4:
subhorizontal
dipping beds,
several stronger
reflectors distributed
within the unit

Early?
Pleistocene

2.0

hemipelagic muds,
volcaniclastics,
turbidites, MTD´s?

filled submarine riftbasin

90

Interpretation
Nomikou et al. (2018)

255 - 308

Seismic unit B3:
subhorizontal
bedding, chaotic
layer, MTD?,
unconformity into
steep layered B2

Early
Pleistocene/
Pliocene

2.1

hemipelagic muds,
volcaniclastics,
turbidites, MTD´s?

filled submarine riftbasin

80

Interpretation
Nomikou et al. (2018)308 - 367

Seismic unit B2;
unconformity withbasement (unit B1
absent)early
Pleistocene?/ 2.4
Plioceneturbidites,
hemipelagics,
volcaniclastics,
MTD´sfilled submarine riftbasin

70

Interpretation
Nomikou et al. (2018)367 - 377

continental
basement

Mesozoic

limestone, shists,
granites

continental
basement??

Interpretation
Nomikou et al. (2018)

Generated: 2020-01-29T22:52:21+00:00

3.0

CSK-10A
NW

WNW

HH06-04-REPROC

ESE

TWT(msec)SE

TWT(msec)

HH06-15-REPROC

a)

b)

1Km

NW

HH06-15-REPROC

SE

WNW

TWT(msec)

TWT(msec)

HH06-04-REPROC

B5
B2

B4
B3

BS

B1
1Km

ESE

B6

B5

B6

c)

1Km

B4
B3
B2

d)

B1
BS
1Km

CSK-10A: HH06-15-REPROC, CDP 906 (a and c); HH06-04-REPROC, CDP 1755 (b and d)
HH06-15

GEOMAR_P5017

HH06-04
CSK-09A

HH06-09

CSK-19A
CSK-10A

Files to be uploaded to SSDB:
Location map: CSK-09A-10A_location.pdf
SEGY-data data: HH06-15-REPROC.sgy, HH06-04-REPROC.sgy
Navigation data: HH06-15-REPROC.txt, HH06-04-REPROC.txt
Bathymetry: CSK_Bathymetry.grd, CSK_Bathymetry.pdf
Backscatter: CSK_Backscatter.grd, CSK_Backscatter.pdf
Gravity-FreeAir: CSK_Gravity_FreeAir.grd, CSK_Gravity_FreeAir.pdf
Gravity-Bouguer: CSK_Gravity_Bouguer.grf,CSK_Gravity_Bouguer.pdf

Site Information:
Coordinates: 36.5494/25.7714
Water depth: 672 m
Penetration: 377 m

Additional data available:
Magnetic: CSK_Magnetic.grd,CSK_Magnetic.pdf
3.5kHz: Sediment_Proﬁler.zip, contains 3.5kHz proﬁles, do not run along site survey proﬁleIODP Site Forms

932 - Add

Form 1 – General Site Information

Section A: Proposal Information

Proposal Title

Date Form Submitted

Volcanism and tectonics in an island-arc rift environment (VolTecArc): Christiana-Santorini-Kolumbo marine
volcanic field, Greece

2019-11-22 13:07:02

Site-Specific CSK-13A is sited in the Christiana Basin. This basin is deeper than the Anhydros and Anafi Basins, and is
Objectives with located SW of Santorini. Its volcano-sedimentary fill potentially records the earlier volcanic history of the CSK
volcanic field (including the products of Christiana and early Santorini), as well as younger Santorini andPriority

possibly Milos Volcano. The hole will pass through alternating volcanic units, including volcaniclastics from
(Must include general
Santorini (marine unitsTh1-3, with three possible pyroclastic flow deposits Pf1-3), and volcaniclastics fromobjectives in proposal)
Christiana (Ch1, 2), to the pre-volcanic basement.

List Previous
Drilling in Area

DSDP hole 378 was drilled in 1975 in the Cretan basin 60 km SSW of Santorini

Section B: General Site Information

Site Name:

Area or Location: Christiana Basin, Aegean Sea,

CSK-13A

GreeceIf site is a reoccupation of an
old DSDP/ODP Site, Please
include former Site#

Latitude:Deg:

Longitude:

Deg:

Distance to Land: 10(km)

25.1826

Coordinate System:
Priority of Site:

Jurisdiction: Greek territorial waters

36.3243

WGS 84
Primary:

Generated: 2020-01-29T22:52:21+00:00✓⃞

Alternate:⃞

Water Depth (m): 489

Section C: Operational Information

Proposed
Penetration (m):Sediments

Basement

847

10

Total Sediment Thickness (m)847

Total Penetration (m):General Lithologies:
Coring Plan:(Specify or check)Muds, volcaniclastics, debris flows, turbidites
2 Holes APC/HLAPC to refusal, each followed by XCB to 675 mbsf; drill ahead in Hole C to 575 mbsf with the option of one or two cored RCB
intervals of 50 meters in between and afterwards RCB to 857 mbsf including 10 m of pre volcanic basement; wireline logging in Hole C(Tripple Combo, FMS Sonic, VSI)

APC

Wireline Logging
Plan:

857

✓

XCB

✓

RCB

Standard Measurements

Special Tools

✓
✓
✓
✓
✓
✓
✓
✓

Magnetic Susceptibility

WL
Porosity
DensityGamma Ray
Resistivity
Sonic (∆t)
Formation Image (Res)VSP (zero offset)

Borehole Temperature✓✓✓

Re-entry

PCS

Other
tools:

Formation Image(Acoustic)
VSP (walkaway)
LWD

Formation Temperature& Pressure
Other Measurements:

Estimated Days:

Drilling/Coring:

10.3

Logging:

1.8

Total On-site:

12.1

Observatory Plan:

Longterm Borehole Observation Plan/Re-entry Plan

Potential Hazards/
Weather:

Shallow Gas

Complicated Seabed
Condition

Hydrothermal Activity

Preferred weather window

Hydrocarbon

Soft SeabedLandslide and Turbidity
Current

Late autumn,
winter or early
springShallow Water Flow

Currents

Gas Hydrate

Abnormal Pressure

Fracture Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H2S

High Dip Angle

Ice Conditions(e.g., sea-floor cables,
dump sites)

CO2
Sensitive marine
habitat (e.g., reefs,

vents)

Other:

Generated: 2020-01-29T22:52:21+00:00

High winds, dense tourist shipping

IODP Site Forms

Proposal #:932 - Add

Form 2 - Site Survey Detail

Site #:

Data Type

CSK-13A

Date Form Submitted: 2019-11-22 13:07:02

In SSDB

Details of available data and data that are still to be collected

1a High resolution seismic reflection (primary)yes

Line: GEOMAR_P5009
Position: CDP 5042

1b High resolution seismic seismic reflection (crossing)yes

Line: GEOMAR_P5006
Position: CDP 4431
Not availble yet

2a Deep penetration seismic reflection (primary)no2b Deep penetration seismic reflection (crossing)no

3 Seismic Velocityno4 Seismic Gridno5a Refraction (surface)no5b Refraction (bottom)

no6 3.5 kHzno

Data and info see Site CSK-01A

7 Swath bathymetrynoData and info see Site CSK-01A

8a Side looking sonar (surface)noData and info see Site CSK-01A

8b Side looking sonar (bottom)no9 Photography or video

no10 Heat Flowno11a Magnetics

noData and info see Site CSK-01A

11b Gravity

noData and info see Site CSK-01A

12 Sediment coresno~1m and ~3.5m long gravity cores (POS513/60 and 9), 5 km and 7.8 km
from site position showing a) coarse or hardened volcaniclastics after 1
meter of soft hemipelagic muds (Minoan eruption deposits) and b)
homogenous hemipelagic muds with some 1 to 20 cm thick intercalated
ash layers (max grain size= 2 mm) ; Sedimentation rate ~6 cm/ka in core
POS513/9.

13 Rock samplingno14a Water current datano14b Ice Conditions

no15 OBS microseismicity

no16 Navigationyes

17 Otherno

Generated: 2020-01-29T22:52:21+00:00

Data and info see Site CSK-01A

GEOMAR_P5009.txt, GEOMAR_P5006.txt

IODP Site Forms

Proposal #:Form 4 - Environmental Protection

932 - Add

Site #:

CSK-13A

Date Form Submitted: 2019-11-22 13:07:02

Pollution & Safety Hazard

Comment

1. Summary of operations at site

Two holes (A, B) APC/HLAPC to refusal including 4 temperature measurements, each followed by
XCB to 675 mbsf; Hole C: RCB drilling ahead until 575 mbsf with the option of one or two coredintervals of 50 meters in between, RCB to 857 mbsf, including 10 m of pre volcanic basement, log
as shown on form 1

2. All hydrocarbon occurrences based on
previous DSDP/ODP/IODP drillingnon

3. All commercial drilling in this area that
produced or yielded significant
hydrocarbon showsnon

4. Indications of gas hydrates at thislocationnon

5. Are there reasons to expecthydrocarbon accumulations at this site?

non

6. What "special" precautions will betaken during drilling?

non

7. What abandonment procedures need
to be followed?

non

8. Natural or manmade hazards which
may affect ship's operations

sailing traffic may be existent but minimized during autumn to early spring

9. Summary: What do you consider the
major risks in drilling at this site?

coarser volcaniclastics from major eruptions

Generated: 2020-01-29T22:52:21+00:00

IODP Site Forms

Proposal #:Form 5 - Lithologies

932 - Add

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

Site #:

Age (My)

CSK-13A

Assumedvelocity(km/s)

Lithology

1.6

hemipelagic muds,
volcaniclastics,
turbidites

1.65

Pumiceous tuffs,
debris flows andthin overlying
surface muds

1.7

hemipelagic muds,
volcaniclastics,
turbidites

1.8

Pumiceous tuffs,
debris flows

Date Form Submitted: 2019-11-22 13:07:02

Avg. accum.
rate (m/My)

Comments

3600

Based oninterpretation of
TsampourakiKraounaki et al.
(2018)>1,000,000

Based oninterpretation of
TsampourakiKraounaki et al.
(2018)

130

Based oninterpretation of
TsampourakiKraounaki et al.
(2018).

>1,000,000

Based oninterpretation of
TsampourakiKraounaki et al.
(2018).

filled marine basin

100

Based oninterpretation of
TsampourakiKraounaki et al.
(2018).

Paleo-environment

0 - 13

Holocene
backgroundsedimentation withsome
volcanoclastics

13 - 28

Late Bronze Age
eruption, submarine
pyroclastic flow
deposit (Pf3)

28 - 79

Marinesedimentation (Th3)
between pyroclastic
flows Pf2 and Pf3

Pleistocene

79 - 168

Seismic unit Pf2,
probable pyroclastic
flow deposit from
Santorini

Pleistocene;possibly
0.42 My168 - 209

Marinesedimentation Th2
between seismic
units Pf2 and PF1,
with volcaniclastics
from Christiana,
Santorini

Pleistocene/
Pliocene?

1.85

hemipelagic muds,
volcaniclastics,
turbidites

209 - 260

Possible pyroclastic
flow deposit (Pf1)

Pleistocene/
Pliocene

1.9

Pumiceous tuffs,
debris flows?

filled marine basin>1,000,000

260 - 321

Inter-fingeringmarinesedimentation andpyroclastic flow fromChristiana (Ch2)and Pf1

Pliocene

1.95

hemipelagic muds,
volcaniclastics,
turbidites

filled marine basin

80

321 - 478

marinesedimentation andpyroclastic flow fromChristiana (Ch2)

Pliocene

1.95

hemipelagic muds,
volcaniclastics,
turbidites

filled marine basin

80478 - 847

Marinesedimentation (Th1)
passing down into
possible
volcaniclastics fromChristiana (Ch1)

Pliocene

2.0

hemipelagic muds,
volcaniclastics,
turbidites

filled marine basin

80847 - 857

pre-volcanic
basement

Mesozoic

3.0

limestone, schists,
granites?

continental
basement?

?

<0.00360.0036

Generated: 2020-01-29T22:52:21+00:00

filled marine basin

filled marine basin

filled marine basin

filled marine basin

CSK-13A
E

a)b)

CSK-13A: GEOMAR_P5009, CDP 5042 (a and c);
GEOMAR_P5006, CDP 4431 (b and d)

1Km

WSW

GEOMAR_P5009

c)

500m

d)

Pf2
Th3

NNW GEOMAR_P5006

ENE

Pf2

Pf2
Pf2

Pf1

Th2

Th3
Pf1

Th2
Ch2

Ch2

Th1

Th1
Ch1

Ch1

1Km

pre-volcanic basement

WSW

SSE

GEOMAR_P5009
HH06-50

ENE

pre-volcanic basement

NNW GEOMAR_P5006

500m

SSE

Files to be uploaded to SSDB:
Location map: CSK-13A_location.pdf
SEGY-data data: GEOMAR_P5009.sgy,
GEOMAR_P5006.sgy
Navigation data: GEOMAR_P5009.txt,
GEOMAR_P5006.txt
Bathymetry: CSK_Bathymetry.grd,0.5Km
CSK_Bathymetry.pdf
Backscatter: CSK_Backscatter.grd,
CSK_Backscatter.pdf
Gravity-FreeAir: CSK_Gravity_FreeAir.grd,
CSK_Gravity_FreeAir.pdf
Gravity-Bouguer:
CSK_Gravity_Bouguer.grf,CSK_Gravity_Bouguer.pdf
Site Information:
Coordinates: 36.3243/25.1826
Water depth: 489 m
Penetration: 857 m

0.5Km

Additional data available:
Magnetic: CSK_Magnetic.grd,CSK_Magnetic.pdf
3.5kHz: Sediment_Profiler.zip, contains 3.5kHz profiles, do not run along site
survey profile.
GEOMAR_P5009

CSK-13A
CSK-20A
CSK-14A

GEOMAR_P5006

GEOMAR_P5008

20060506_214929

IODP Site Forms

932 - Add

Form 1 – General Site Information

Section A: Proposal Information

Proposal Title

Date Form Submitted

Volcanism and tectonics in an island-arc rift environment (VolTecArc): Christiana-Santorini-Kolumbo marine
volcanic field, Greece

2019-11-22 13:07:02

Site-Specific CSK-14A is sited in the Christiana Basin. This basin is deeper than the Anhydros and Anafi Basins, and is
Objectives with located SW of Santorini. Its volcano-sedimentary fill potentially records the earlier volcanic history of the CSK
volcanic field (including the products of Christiana and early Santorini), as well as younger Santorini andPriority

possibly Milos Volcano. The hole will pass through alternating volcanic units, including volcaniclastics from
(Must include general
Santorini (marine unitsTh1-3, with three possible pyroclastic flow deposits Pf1-3), and volcaniclastics fromobjectives in proposal)
Christiana (Ch1, 2), to the pre-volcanic basement.

List Previous
Drilling in Area

DSDP hole 378 was drilled in 1975 in the Cretan basin 60 km SSW of Santorini

Section B: General Site Information

Site Name:

Area or Location: Christiana Basin, Aegean Sea,

CSK-14A

GreeceIf site is a reoccupation of an
old DSDP/ODP Site, Please
include former Site#

Latitude:Deg:

Longitude:

Deg:

Distance to Land: 10(km)

25.1286

Coordinate System:
Priority of Site:

Jurisdiction: Greek territorial waters36.3049

WGS 84
Primary:

Generated: 2020-01-29T22:52:21+00:00⃞

Alternate:✓⃞

Water Depth (m): 523

Section C: Operational Information

Proposed
Penetration (m):Sediments

Basement

746

10

Total Sediment Thickness (m)746

Total Penetration (m):General Lithologies:
Coring Plan:(Specify or check)Muds, volcaniclastics, debris flows, turbidites
2 Holes APC/HLAPC to refusal, each followed by XCB to 675 mbsf; drill ahead in Hole C to 575 mbsf with the option of one or two cored RCB
intervals of 50 meters in between and afterwards RCB to 756 mbsf, including 10 m pre volcanic basement; wireline logging in Hole C(Tripple Combo, FMS Sonic, VSI)

APC

Wireline Logging
Plan:

756

✓

XCB

✓

RCB

Standard Measurements

Special Tools

✓
✓
✓
✓
✓
✓
✓
✓

Magnetic Susceptibility

WL
Porosity
DensityGamma Ray
Resistivity
Sonic (∆t)
Formation Image (Res)VSP (zero offset)

Borehole Temperature✓✓✓

Re-entry

PCS

Other
tools:

Formation Image(Acoustic)
VSP (walkaway)
LWD

Formation Temperature& Pressure
Other Measurements:

Estimated Days:

Drilling/Coring:

9.8

Logging:

1.6

Total On-site:

11.4

Observatory Plan:

Longterm Borehole Observation Plan/Re-entry Plan

Potential Hazards/
Weather:

Shallow Gas

Complicated Seabed
Condition

Hydrothermal Activity

Preferred weather window

Hydrocarbon

Soft SeabedLandslide and Turbidity
Current

Late autumn,
winter or early
springShallow Water Flow

Currents

Gas Hydrate

Abnormal Pressure

Fracture Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H2S

High Dip Angle

Ice Conditions(e.g., sea-floor cables,
dump sites)

CO2
Sensitive marine
habitat (e.g., reefs,

vents)

Other:

Generated: 2020-01-29T22:52:21+00:00

High winds, dense tourist shipping

IODP Site Forms

Proposal #:932 - Add

Form 2 - Site Survey Detail

Site #:

Data Type

CSK-14A

Date Form Submitted: 2019-11-22 13:07:02

In SSDB

Details of available data and data that are still to be collected

1a High resolution seismic reflection (primary)yes

Line: GEOMAR_P5009
Position: CDP 1644

1b High resolution seismic seismic reflection (crossing)yes

Line: SBL20060506_214929-REPROC
Position: CDP 886

2a Deep penetration seismic reflection (primary)no2b Deep penetration seismic reflection (crossing)no

3 Seismic Velocityno4 Seismic Gridno5a Refraction (surface)no5b Refraction (bottom)

no6 3.5 kHzno

Data and info see Site CSK-01A

7 Swath bathymetrynoData and info see Site CSK-01A

8a Side looking sonar (surface)noData and info see Site CSK-01A

8b Side looking sonar (bottom)no9 Photography or video

no10 Heat Flowno11a Magnetics

noData and info see Site CSK-01A

11b Gravity

noData and info see Site CSK-01A

12 Sediment coresyes~1m and ~3.5m long gravity cores (POS513/60 and 9), 6 km from site
position showing a) coarse or hardened volcaniclastics after 1 meter ofsoft hemipelagic muds (Minoan eruption deposits) and b) homogenous
hemipelagic muds with some 1 to 20 cm thick intercalated ash layers(max grain size= 2 mm) ; Sedimentation rate ~6 cm/ka in core POS513/9.

13 Rock samplingno14a Water current datano14b Ice Conditions

no15 OBS microseismicity

no16 Navigationyes

17 Otherno

Generated: 2020-01-29T22:52:21+00:00

Data and info see Site CSK-01A

GEOMAR_P5009.txt, 20060506_214929-REPROC.txt

IODP Site Forms

Proposal #:Form 4 - Environmental Protection

932 - Add

Site #:

CSK-14A

Date Form Submitted: 2019-11-22 13:07:02

Pollution & Safety Hazard

Comment

1. Summary of operations at site

Two holes (A, B) APC/HLAPC to refusal including 4 temperature measurements, each followed by
XCB to 675 mbsf; Hole C: RCB drilling ahead until 575 mbsf with the option of one or two coredintervals of 50 meters in between, RCB to 756 mbsf including 10 m of pre volcanic basement, log
as shown on form 1

2. All hydrocarbon occurrences based on
previous DSDP/ODP/IODP drillingnon

3. All commercial drilling in this area that
produced or yielded significant
hydrocarbon showsnon

4. Indications of gas hydrates at thislocationnon

5. Are there reasons to expecthydrocarbon accumulations at this site?

non

6. What "special" precautions will betaken during drilling?

non

7. What abandonment procedures need
to be followed?

non

8. Natural or manmade hazards which
may affect ship's operations

sailing traffic may be existent but minimized during autumn to early spring

9. Summary: What do you consider the
major risks in drilling at this site?

coarser volcaniclastics from major eruptions

Generated: 2020-01-29T22:52:21+00:00

IODP Site Forms

Proposal #:Form 5 - Lithologies

932 - Add

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

Site #:

Age (My)

CSK-14A

Assumedvelocity(km/s)

Lithology

1.6

hemipelagic muds,
volcaniclastics,
turbidites

1.6

Pumiceous tuff,
debris flows andthin overlying
surface muds

1.7

hemipelagic muds,
volcaniclastics,
turbidites

1.8

Pumiceous tuffs,
debris flows

Date Form Submitted: 2019-11-22 13:07:02

Avg. accum.
rate (m/My)

Comments

3600

Based oninterpretation of
TsampourakiKraounaki et al.
(2018)>1,000,000

Based oninterpretation of
TsampourakiKraounaki et al.
(2018).

130

Based oninterpretation of
TsampourakiKraounaki et al.
(2018).

>1,000,000

Based oninterpretation of
TsampourakiKraounaki et al.
(2018).

filled marine basin

100

Based oninterpretation of
TsampourakiKraounaki et al.
(2018).

Paleo-environment

0-7

Holocene
backgroundsedimentation withsome
volcanoclastics

7 - 19Late Bronze Age
eruption, submarine
pyroclastic flow
deposit (Pf3)

19 - 70

Marinesedimentation (Th3)
between pyroclastic
flows Pf2 and Pf3

Pleistocene

70 - 161

Seismic unit Pf2,
probable pyroclastic
flow deposit from
Santorini

Pleistocene;possibly
0.42 My161 - 239

Marinesedimentation Th2
between seismic
units Pf2 and Pf1,
with volcaniclastics
from Christiana,
Santorini

Pleistocene/
Pliocene?

1.85

hemipelagic muds,
volcaniclastics,
turbidites

239 - 252

Possible pyroclastic
flow deposit (Pf1)

Pleistocene/
Pliocene

1.9

Pumiceous tuffs,
debris flows?

filled marine basin>1,000,000

252 - 338

Inter-fingeringmarinesedimentation andpyroclastic flow fromChristiana (Ch2)and Pf1

Pliocene

1.95

hemipelagic muds,
volcaniclastics,
turbidites

rifted marine basin

80

338 - 516

marinesedimentation andpyroclastic flow fromChristiana (Ch2)

Pliocene

1.95

hemipelagic muds,
volcaniclastics,
turbidites

filled marine basin

80516 - 746

Marinesedimentation (Th1)
passing down into
possible
volcaniclastics fromChristiana (Ch1)

Pliocene

2.0

hemipelagic muds,
volcaniclastics,
turbidites

filled marine basin

80746 - 756

pre-volcanic
basement

Mesozoic

3.0

limestone, schists,
granites?

continental
basement?

?

<0.00360.0036

Generated: 2020-01-29T22:52:21+00:00

filled marine basin

filled marine basin

filled marine basin

filled marine basin

CSK-14A
E

a)b)

CSK-14A: GEOMAR_P5009, CDP 1644 (a and c);
20060506_214929-REPROC, CDP 886 (b and d)

1Km

WSW

GEOMAR_P5009

c)

2Km

ENE

20060506_214929REPROC

d)

Pf3
Th3

S

Pf2

Pf3
Th3

Pf2
Pf1

Pf1

Th2
Ch2

Th1

Th1

Th2
Ch2

Ch1

Ch1

pre-volcanic basement

1Km

pre-volcanic basement

WSW

N

GEOMAR_P5009
HH06-50

ENE

S

2Km

20060506_214929REPROC

N

Files to be uploaded to SSDB:
Location map: CSK-14A_location.pdf
SEGY-data data: GEOMAR_P5009.sgy,
20060506_214929-REPROC.sgy
Navigation data: GEOMAR_P5009.txt,
20060506_214929-REPROC.txt
Bathymetry: CSK_Bathymetry.grd, 0.5Km
CSK_Bathymetry.pdf
Backscatter: CSK_Backscatter.grd,
CSK_Backscatter.pdf
Gravity-FreeAir: CSK_Gravity_FreeAir.grd,
CSK_Gravity_FreeAir.pdf
Gravity-Bouguer:
CSK_Gravity_Bouguer.grf,CSK_Gravity_Bouguer.pdf
Site Information:
Coordinates: 36.3049/25.1286
Water depth: 523 m
Penetration: 756 m

0.5Km

Additional data available:
Magnetic: CSK_Magnetic.grd,CSK_Magnetic.pdf
3.5kHz: Sediment_Profiler.zip, contains 3.5kHz profiles, do not run along site
survey profile.
GEOMAR_P5009

CSK-13A
CSK-20A
CSK-14A

GEOMAR_P5006

GEOMAR_P5008

20060506_214929

IODP Site Forms

932 - Add

Form 1 – General Site Information

Section A: Proposal Information

Proposal Title

Date Form Submitted

Volcanism and tectonics in an island-arc rift environment (VolTecArc): Christiana-Santorini-Kolumbo marine
volcanic field, Greece

2019-11-22 13:07:02

Site-Specific CSK-15A targets the plio-quaternay volcano-sedimentary fill of the Anhydros Basin, to the depth of the Alpine
Objectives with basement. The site lies near the basin axis in a position downstream of Santorini and Kolumbo Volcanoes.
The aim is to use the core (and seismic profiles) to reconstruct the volcanic, sedimentary and tectonic
Priority

histories of the basin, and to access a near-continuous time series of volcanism in the area since rift
(Must include general
inception. The hole will transect and characterize all six seismic packages of the Anhydros rift basin (B1 toobjectives in proposal)
B6).

List Previous
Drilling in Area

DSDP hole 378 was drilled in 1975 in the Cretan basin 60 km SSW of Santorini

Section B: General Site Information

Site Name:

Area or Location: Anhydros Basin, Aegean Sea,

CSK-15A

GreeceIf site is a reoccupation of an
old DSDP/ODP Site, Please
include former Site#

Latitude:Deg:

Longitude:

Deg:

Distance to Land: 10(km)

25.6463

Coordinate System:
Priority of Site:

Jurisdiction: Greek territorial waters

36.7320

WGS 84
Primary:

Generated: 2020-01-29T22:52:21+00:00⃞

Alternate:✓⃞

Water Depth (m): 490

Section C: Operational Information

Proposed
Penetration (m):Sediments

Basement

790

10

Total Sediment Thickness (m)790

Total Penetration (m):General Lithologies:
Coring Plan:(Specify or check)

Limestone, schist or granite

Muds, volcaniclastics, debris flows, turbidites

2 Holes APC/HLAPC to refusal, each followed by XCB to 610 mbsf; drill ahead in Hole C to 575 mbsf with the option of one or two coredintervals of 50 meters in between and afterwards RCB to 800 mbsf, including 10m of basement or until refusal; wireline logging in Hole C(Tripple Combo, FMS Sonic, VSI)

APC

Wireline Logging
Plan:

800

✓

XCB

✓

RCB

Standard Measurements

Special Tools

✓
✓
✓
✓
✓
✓
✓
✓

Magnetic Susceptibility

WL
Porosity
DensityGamma Ray
Resistivity
Sonic (∆t)
Formation Image (Res)VSP (zero offset)

Borehole Temperature✓✓✓

Re-entry

PCS

Other
tools:

Formation Image(Acoustic)
VSP (walkaway)
LWD

Formation Temperature& Pressure
Other Measurements:

Estimated Days:

Drilling/Coring:

10.8

Logging:

1.7

Total On-site:

12.5

Observatory Plan:

Longterm Borehole Observation Plan/Re-entry Plan

Potential Hazards/
Weather:

Shallow Gas

Complicated Seabed
Condition

Hydrothermal Activity

Preferred weather window

Hydrocarbon

Soft SeabedLandslide and Turbidity
Current

Late autumn,
winter or early
springShallow Water Flow

Currents

Gas Hydrate

Abnormal Pressure

Fracture Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H2S

High Dip Angle

Ice Conditions(e.g., sea-floor cables,
dump sites)

CO2
Sensitive marine
habitat (e.g., reefs,

vents)

Other:

Generated: 2020-01-29T22:52:21+00:00

High winds, dense tourist shipping

IODP Site Forms

Proposal #:932 - Add

Form 2 - Site Survey Detail

Site #:

Data Type

CSK-15A

Date Form Submitted: 2019-11-22 13:07:02

In SSDB

Details of available data and data that are still to be collected

1a High resolution seismic reflection (primary)yes

Line: HH06-15-REPROC
Position: CDP 2770

1b High resolution seismic seismic reflection (crossing)noNo cross line

2a Deep penetration seismic reflection (primary)no2b Deep penetration seismic reflection (crossing)no

3 Seismic Velocity

yes

4 Seismic Gridno5a Refraction (surface)no5b Refraction (bottom)

no6 3.5 kHzyes

The 3.5 kHz profiles do not run along the site survey profiles, but image
the shallow strata on a regional scale.

7 Swath bathymetryyes

CSK-bathy.grd, CSK-bathy.pdf

8a Side looking sonar (surface)yes

8b Side looking sonar (bottom)

no

See Velocity_Table.pdf

9 Photography or video
10 Heat Flow
11a Magnetics

yes

CSK-Mag.grd, CSL-Mag.pdf
These grids cover entire study area on a regional scale, covering all sites.
There are no site specific grids or maps.

11b Gravity

yes

CSK-Gravity-FreeAir.grd, CSK-Gravity-FreeAir.pdf
CSK-Bouguer.grd, CSK-Gravity-FreeAir.pdf
These grids cover entire study area on a regional scale, covering all sites.
There are no site specific grids or maps.

12 Sediment coresyes~5m long gravity core and a box corer (POS513/15 and 21), 7.1 km fromsite position showing soft hemipelagic muds with some 1 to 5 cm thickintercalated ash layers; Sedimentation rate ~9 cm/ka.

13 Rock sampling
14a Water current datano14b Ice Conditions

no15 OBS microseismicity

no16 Navigationyes

17 Otherno

Generated: 2020-01-29T22:52:21+00:00

HH06-15-REPROC.txt

IODP Site Forms

Proposal #:Form 4 - Environmental Protection

932 - Add

Site #:

CSK-15A

Date Form Submitted: 2019-11-22 13:07:02

Pollution & Safety Hazard

Comment

1. Summary of operations at site

Two holes (A, B) APC/HLAPC to refusal including 4 temperature measurements, each followed by
XCB to 610 mbsf; Hole C: RCB drilling ahead until 575 mbsf with the option of one or two coredintervals of 50 meters in between, RCB to 800 mbsf including 10 m of basement, log as shown on
form 1

2. All hydrocarbon occurrences based on
previous DSDP/ODP/IODP drillingnon

3. All commercial drilling in this area that
produced or yielded significant
hydrocarbon showsnon

4. Indications of gas hydrates at thislocationno5. Are there reasons to expecthydrocarbon accumulations at this site?

no6. What "special" precautions will betaken during drilling?

non

7. What abandonment procedures need
to be followed?

Non

8. Natural or manmade hazards which
may affect ship's operations

sailing traffic may be existent but minimized during autumn to early spring

9. Summary: What do you consider the
major risks in drilling at this site?

Target drill depth for XCB in Holes A and B may be to deep for XCB only but is covered by RCB in
Hole C

Generated: 2020-01-29T22:52:21+00:00

IODP Site Forms

Proposal #:932 - Add

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

0 - 43Form 5 - Lithologies

Seismic unit B6:
horizontal dipping
beds, one stronger
reflector at ~20 m

43 - 95

Seismic unit B5:
horizontal dippingbeds

95 - 239

Seismic unit B4:
horizontal dipping
beds, several
stronger reflectors
distributed within theunit

239 - 349

Seismic unit B3:
subhorizontal
dipping beds,
several stronger
reflectors distributed
within the unit

349 - 488

Seismic unit B2:
subhorizontal
dipping beds,
several stronger
reflectors distributed
within the unit;
chaotic layering in
the lower part?

Site #:

Age (My)

Pleistocene/
Holocene

Pleistocene

Early?
Pleistocene

Early
Pleistocene/
Pliocene

CSK-15A

Date Form Submitted: 2019-11-22 13:07:02

Assumedvelocity(km/s)

Lithology

Paleo-environment

1.6

hemipelagic muds,
volcaniclastics,
turbidites

filled submarine riftbasin

1.8

2.0

2.1

hemipelagic muds,
volcaniclastics,
turbidites

hemipelagic muds,
volcaniclastics,
turbidites

hemipelagic muds,
volcaniclastics,
turbidites

filled submarine riftbasin

filled submarine riftbasin

filled submarine riftbasin

Avg. accum.
rate (m/My)

Comments

180

lithology similar like ingravity core;interpretation
Nomikou et al.
(2016b; 2018)170

lithology andstructures are thesame like in firstseismic units but
stronger compacted;
Interpretation after
Nomikou et al.
(2016b; 2018)

160

More turbiditic
deposits but at drillsite still horizontal
layering;
interpretation after
Nomikou et al.
(2016b; 2018)

150

Inclination in bedding
indicate either initial
fill off the rifted basin
or tectonic activity;interpretation after
Nomikou et al.
(2016b; 2018)

120

Inclination in bedding
indicate either initial
fill off the rifted basin
or tectonic activity;
chaotic layer may
indicate slumping andmass flows;interpretation after
Nomikou et al.
(2016b; 2018)

early
Pleistocene?/ 2.4
Pliocenehemipelagic muds,
volcaniclastics,
turbidites, MTD´s?

488 - 790

Seismic unit B1:
subhorizontal
dipping beds on
basement
unconformity

Pliocene

2.6

MTD´s, sands andgravel, turbidites,
hemipelagic muds,
volcaniclastics

submarine tocontinental; initial
filling of a rift basin

110

initial filling sequenceof the rift with mixed
volcaniclastic andcontinental material;
interpretation after
Nomikou et al.
(2016b; 2018)

790 - 800

continental
basement

Mesozoic

3.0

limestone, schists,
granites

continental
basement??

Interpretation after
Nomikou et al.
(2016b; 2018)

Generated: 2020-01-29T22:52:21+00:00

filled submarine rift

CSK-15A

HH06-15-REPROC

SE

a)

1Km

CSK-02A

GEOMAR_P2002

CSK-15A
CSK-01A

HH06-15

HH06-14

HH06-15-REPROC

NW

SE

B6
B5
B4
B3
B2

TWT(msec)

TWT(msec)

NW

B1

b)

Bs

CSK-15A: HH06-15-REPROC, CDP 2770 (a and b)
Files to be uploaded to SSDB:
Location map: CSK-01A_location.pdf
SEGY-data: HH06-15-REPROC.sgy
Navigation data: HH06-15-REPROC.txt
Bathymetry: CSK_Bathymetry.grd, CSK_Bathymetry.pdf

1Km

Site Information:
Coordinates: 36.7320/25.6463
Water depth: 490 m
Penetration: 800 m

IODP Site Forms

932 - Add

Form 1 – General Site Information

Section A: Proposal Information

Proposal Title

Date Form Submitted

Volcanism and tectonics in an island-arc rift environment (VolTecArc): Christiana-Santorini-Kolumbo marine
volcanic field, Greece

2019-11-22 13:07:02

Site-Specific CSK-16A lies in the Anhydros Basin on the NW submarine flank of Kolumbo Volcano. The aim is to penetrate
Objectives with four seismically recognized volcanic eruption units from Kolumbo (K2, K3, K5 and the thin lateral continuationof K1), as well as many eruption units from Santorini. This will enable characterisation of the products of thePriority(Must include generalobjectives in proposal)

List Previous
Drilling in Area

Kolumbo eruptions, as well as construction of a coherent stratigraphy for Santorini and Kolumbo together.

DSDP hole 378 was drilled in 1975 in the Cretan basin 60 km SSW of Santorini

Section B: General Site Information

Site Name:

Area or Location: Anhydros Basin, Aegean Sea,

CSK-16A

GreeceIf site is a reoccupation of an
old DSDP/ODP Site, Please
include former Site#

Latitude:Deg:

Longitude:

Deg:

Distance to Land: 9(km)

25.4517

Coordinate System:
Priority of Site:

Jurisdiction: Greek territorial waters

36.5480

WGS 84
Primary:

Generated: 2020-01-29T22:52:21+00:00⃞

Alternate:✓⃞

Water Depth (m): 372

Section C: Operational Information

Proposed
Penetration (m):Sediments

Basement

565

0Total Sediment Thickness (m)565

Total Penetration (m):General Lithologies:
Coring Plan:(Specify or check)Muds, volcaniclastics, debris flows, turbidites
3 Holes APC/HLAPC to refusal, each followed by XCB to 565 mbsf; wireline logging in Hole C (Tripple Combo, FMS
Sonic, VSI)
APC

Wireline Logging
Plan:

565

✓

XCB

✓

RCB

Standard Measurements

Special Tools

✓
✓
✓
✓
✓
✓
✓
✓

Magnetic Susceptibility

WL
Porosity
DensityGamma Ray
Resistivity
Sonic (∆t)
Formation Image (Res)VSP (zero offset)

Borehole Temperature✓✓

Re-entry

PCS

Other
tools:

Formation Image(Acoustic)
VSP (walkaway)
LWD

Formation Temperature& Pressure
Other Measurements:

Estimated Days:

Drilling/Coring:

8.2

Logging:

1.3

Total On-site:

9.5

Observatory Plan:

Longterm Borehole Observation Plan/Re-entry Plan

Potential Hazards/
Weather:

Shallow Gas

Complicated Seabed
Condition

Hydrothermal Activity

Preferred weather window

Hydrocarbon

Soft SeabedLandslide and Turbidity
Current

Late autumn,
winter or early
springShallow Water Flow

Currents

Gas Hydrate

Abnormal Pressure

Fracture Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H2S

High Dip Angle

Ice Conditions(e.g., sea-floor cables,
dump sites)

CO2
Sensitive marine
habitat (e.g., reefs,

vents)

Other:

Generated: 2020-01-29T22:52:21+00:00

High winds, dense tourist shipping

IODP Site Forms

Proposal #:932 - Add

Form 2 - Site Survey Detail

Site #:

Data Type

CSK-16A

Date Form Submitted: 2019-11-22 13:07:02

In SSDB

Details of available data and data that are still to be collected

1a High resolution seismic reflection (primary)yes

Line: HH06-22-REPROC
Position: CDP 722

1b High resolution seismic seismic reflection (crossing)no2a Deep penetration seismic reflection (primary)no2b Deep penetration seismic reflection (crossing)no

3 Seismic Velocityno4 Seismic Gridno5a Refraction (surface)no5b Refraction (bottom)

no6 3.5 kHzno

Data and info see Site CSK-01A

7 Swath bathymetrynoData and info see Site CSK-01A

8a Side looking sonar (surface)

Data and info see Site CSK-01A

Data and info see Site CSK-01A

8b Side looking sonar (bottom)
9 Photography or video

no10 Heat Flowno11a Magnetics

noData and info see Site CSK-01A

11b Gravity

noData and info see Site CSK-01A

yes

3 potential gravity cores nearby: POS513/57 3.5 km away showing 20 cm
of muddy surface sediments and stuck in >30 cm fine to coarse ash
volcaniclastics (63µ to 1 cm grain sizes); POS513/17 in 7.5 km distanceshowing 30 cm of muddy surface sediments and stuck in >50 cm finegrained volcaniclastics (<0.5 cm grain sizes); POS513/16 showing 20 cm
of muddy surface sediments and stuck in 80 cm fine-grained
volcaniclastics (<1mm grain size); Sedimentation rate ~9 cm/ka in muddy
sediments, and event sedimentation for volcaniclastics.

12 Sediment cores

13 Rock sampling
14a Water current datano14b Ice Conditions

no15 OBS microseismicity

no16 Navigationyes

17 Otherno

Generated: 2020-01-29T22:52:21+00:00

HH06-22-REPROC.txt,

IODP Site Forms

Proposal #:Form 4 - Environmental Protection

932 - Add

Site #:

CSK-16A

Date Form Submitted: 2019-11-22 13:07:02

Pollution & Safety Hazard

Comment

1. Summary of operations at site

Tripple APC/HLAPC (Holes A, B, C) to refusal including 4 temperature measurements, eachfollowed by XCB to 565 mbsf or until refusal, log as shown on form 1

2. All hydrocarbon occurrences based on
previous DSDP/ODP/IODP drillingnon

3. All commercial drilling in this area that
produced or yielded significant
hydrocarbon showsnon

4. Indications of gas hydrates at thislocationnon

5. Are there reasons to expecthydrocarbon accumulations at this site?

non

6. What "special" precautions will betaken during drilling?

non

7. What abandonment procedures need
to be followed?

non

8. Natural or manmade hazards which
may affect ship's operations

sailing traffic may be existent but minimized during autumn to early spring

9. Summary: What do you consider the
major risks in drilling at this site?

Target drill depth may be to deep for XCB only and fine to coarse volcaniclastic in the top 10
meters may be be difficult to penetrate

Generated: 2020-01-29T22:52:21+00:00

IODP Site Forms

Proposal #:Form 5 - Lithologies

932 - Add

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

Site #:

CSK-16A

Date Form Submitted: 2019-11-22 13:07:02

Age (My)

Assumedvelocity(km/s)

Lithology

Paleo-environment

Avg. accum.
rate (m/My)

Comments

0 - 20

Seismic unit K5: AD
1650 eruption of
Kolumbo

AD 1650

1.65

Volcaniclastics(pumiceous)filled submarine riftbasin>1,000,000

Interpretation of
Hubscher et al.
(2015)

20 - 118

Seismic unit SK4;
Volcaniclastics(including debris
flows) from
Santorini, andmarinesedimentation

Holocene/
Upper
Pleistocene

1.7

hemipelagic muds,
volcaniclastics,
turbidites, MTD´sfilled submarine riftbasin

130Interpretation of
Hubscher et al.
(2015)

118 - 129

Seismic unit K3:
eruption of Kolumbo

Pleistocene

1.75

volcaniclastics(probably
pumiceous)filled submarine riftbasin>1,000,000

Interpretation of
Hubscher et al.
(2015)

129 - 212

Seismic unit SK3:
Volcaniclastics from
Santorini (including
mass flows) andmarinesedimentation

Pleistocene

1.8

hemipelagic muds,
volcaniclastics,
turbidites, MTD´s?

filled submarine riftbasin

120Interpretation of
Hubscher et al.
(2015)

212 - 266

Seismic unit SK2:
Volcaniclastics from
Santorini (incuding
mass flows) andmarinesedimentation

Pleistocene

1.8

hemipelagic muds,
volcaniclastics,
turbidites, MTD´s?

filled submarine riftbasin

110Interpretation of
Hubscher et al.
(2015)

266 - 288

Seismic unit K2:
eruption of Kolumbo

Pleistocene

1.85

volcaniclastics(probably
pumiceous)filled submarine riftbasin>1,000,000

Interpretation of
Hubscher et al.
(2015)

288 - 311

Seismic unit SK1:
Volcaniclastics from
Santorini (including
mass flows) andmarinesedimentation

Pleistocene

1.9

hemipelagic muds,
volcaniclastics,
turbidites, MTD´s?

filled submarine riftbasin

100Interpretation of
Hubscher et al.
(2015)

311 - 320

Seismic unit K1:
eruption of Kolumbo(intercalated within
SK1)

Pleistocene

1.95

Volcaniclastics(probably
pumiceous)filled submarine riftbasin>1,000,000

Presence of unit K1
extrapolated onseismic profiles andassumed to be <10 mthick; interpretation of
Hubscher et al.
(2015)

320 - 565

Seismic unit pre-K1:
Volcaniclastics from
Santorini (including
mass flows) andmarinesedimentation

Pleistocene/
Pliocene?

1900

hemipelagic muds,
volcaniclastics,
turbidites, MTD´s?

filled submarine riftbasin

80

Interpretation of
Hubscher et al.
(2015)

Generated: 2020-01-29T22:52:21+00:00

CSK-16A

HH06-22-REPROC

SE

NW

HH06-22-REPROC

TWT(msec)

TWT(msec)

NW

a)

1Km

CSK-04A

CSK-03A

CSK-16A

HH06-45

CSK-21A
HH06-22

HH06-37Sk1

b)

CSK-16A: HH06-22-REPROC, CDP 722 (a and b);

HH06-34

HH06-44

Sk4 K3
Sk2

SE
K5
Sk3

K2
K1

1Km

Site information:
Coordinates:36.5480/25.4517
Water depth: 372 m
Penetration: 565 m

Files to be uploaded to SSDB:
Location map: CSK-04A_location.pdf
SEGY-data data: HH06-22-REPROC.sgy
Navigation data: HH06-22-REPROC.txt
Bathymetry: CSK_Bathymetry.grd, CSK_Bathymetry.pdf
Backscatter: CSK_Backscatter.grd, CSK_Backscatter.pdf
Gravity-FreeAir: CSK_Gravity_FreeAir.grd, CSK_Gravity_FreeAir.pdf
Gravity-Bouguer: CSK_Gravity_Bouguer.grf,CSK_Gravity_Bouguer.pdf

Additional data available:
Magnetic: CSK_Magnetic.grd,CSK_Magnetic.pdf
3.5kHz: Sediment_Proﬁler.zip, contains 3.5kHz proﬁles, do not run along site survey proﬁleIODP Site Forms

932 - Add

Form 1 – General Site Information

Section A: Proposal Information

Proposal Title

Date Form Submitted

Volcanism and tectonics in an island-arc rift environment (VolTecArc): Christiana-Santorini-Kolumbo marine
volcanic field, Greece

2019-11-22 13:07:02

Site-Specific CSK-17A is sited in the northern basin of Santorini caldera. The aim is to penetrate intracaldera seismic units
Objectives with S1, S2, and S3 in order to characterise them and confirm (or not) published hypotheses, as well as topenetrate below unit S3 (probably intracaldera tuff of the LBA eruption). The hole is located north of a lowPriority

velocity seismic anomaly detected by the PROTEUS seismic tomography experiments and centered on the(Must include general
focus of caldera floor uplift during the unrest period of 2011-12.
objectives in proposal)

List Previous
Drilling in Area

DSDP hole 378 was drilled in 1975 in the Cretan basin 60 km SSW of Santorini. Onland drilling on Kameni
islands to 200 m depth in 1987-88.

Section B: General Site Information

Site Name:

Area or Location: Santorini caldera (northern basin),

CSK-17A

Aegean Sea, Greece

If site is a reoccupation of an
old DSDP/ODP Site, Please
include former Site#

Latitude:Deg:

Longitude:

Deg:

Distance to Land: 2(km)

25.3819

Coordinate System:
Priority of Site:

Jurisdiction: Greek territorial waters

36.4339

WGS 84
Primary:

Generated: 2020-01-29T22:52:21+00:00⃞

Alternate:✓⃞

Water Depth (m): 386

Section C: Operational Information

Proposed
Penetration (m):Sediments

Basement

420

0Total Sediment Thickness (m)420

Total Penetration (m):General Lithologies:
Coring Plan:(Specify or check)

Coarse intracaldera sediments, breccias,
landslides, lavas, muds
2 Holes APC/HLAPC/XCB to refusal, drill ahead in Hole C to 150 mbsf and RCB to 420 mbsf; wirleline logging in
Hole D (Tripple Combo, FMS Sonic, VSI)
APC

Wireline Logging
Plan:

420

✓

XCB

✓

RCB

Standard Measurements

Special Tools

✓
✓
✓
✓
✓
✓
✓
✓

Magnetic Susceptibility

WL
Porosity
DensityGamma Ray
Resistivity
Sonic (∆t)
Formation Image (Res)VSP (zero offset)

Borehole Temperature✓✓✓

Re-entry

PCS

Other
tools:

Formation Image(Acoustic)
VSP (walkaway)
LWD

Formation Temperature& Pressure
Other Measurements:

Estimated Days:

Drilling/Coring:

4.8

Logging:1

Total On-site:

5.8

Observatory Plan:

Longterm Borehole Observation Plan/Re-entry Plan

Potential Hazards/
Weather:

Shallow Gas

Complicated Seabed
Condition

Hydrothermal Activity

Preferred weather window

Hydrocarbon

Soft SeabedLandslide and Turbidity
Current

Late autumn,
winter or early
springShallow Water Flow

Currents

Gas Hydrate

Abnormal Pressure

Fracture Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H2S

High Dip Angle

Ice Conditions(e.g., sea-floor cables,
dump sites)

CO2
Sensitive marine
habitat (e.g., reefs,

vents)

Other:

Generated: 2020-01-29T22:52:21+00:00

High winds, dense tourist shipping. Multiple cruise liners in the summer months. No bright spots
indicative of gas to the 400 mbsf on available seismic profiles.

IODP Site Forms

Proposal #:932 - Add

Form 2 - Site Survey Detail

Site #:

Data Type

CSK-17A

Date Form Submitted: 2019-11-22 13:07:02

In SSDB

Details of available data and data that are still to be collected

1a High resolution seismic reflection (primary)yes

Line: GEOMAR_P1006
Position: CDP 19938

1b High resolution seismic seismic reflection (crossing)no2a Deep penetration seismic reflection (primary)no2b Deep penetration seismic reflection (crossing)no

3 Seismic Velocityno4 Seismic Gridno5a Refraction (surface)no5b Refraction (bottom)

no6 3.5 kHzno

Data and info see Site CSK-01A

7 Swath bathymetrynoData and info see Site CSK-01A

8a Side looking sonar (surface)noData and info see Site CSK-01A

8b Side looking sonar (bottom)no9 Photography or video

no10 Heat Flowno11a Magnetics

noData and info see Site CSK-01A

11b Gravity

noData and info see Site CSK-01A

12 Sediment cores

yes

Mostly Box corer from 2006 R/V Aegeao expedition of variable length up
to 1 m. Mixture of hemipelagic muds and volcaniclastics

13 Rock samplingno14a Water current datano14b Ice Conditions

no15 OBS microseismicity

no16 Navigationyes

17 Otherno

Generated: 2020-01-29T22:52:21+00:00

Data and info see Site CSK-01A

GEOMAR_P1006.txt

IODP Site Forms

Proposal #:Form 4 - Environmental Protection

932 - Add

Site #:

CSK-17A

Date Form Submitted: 2019-11-22 13:07:02

Pollution & Safety Hazard

Comment

1. Summary of operations at site

Two holes (A, B) APC/HLAPC to refusal including 4 temperature measurements, each followed by
XCB to refusal; Hole C: RCB drilling ahead until 150 mbsf, RCB to 420 mbsf, log as shown on form
1

2. All hydrocarbon occurrences based on
previous DSDP/ODP/IODP drillingnon

3. All commercial drilling in this area that
produced or yielded significant
hydrocarbon showsnon

4. Indications of gas hydrates at thislocationnon

5. Are there reasons to expecthydrocarbon accumulations at this site?

non

6. What "special" precautions will betaken during drilling?

non

7. What abandonment procedures need
to be followed?

non

8. Natural or manmade hazards which
may affect ship's operations

heavy ship traffic in the Caldera but minimized during autumn to early spring

9. Summary: What do you consider the
major risks in drilling at this site?

coarse clastics and lava blocks

Generated: 2020-01-29T22:52:21+00:00

IODP Site Forms

Proposal #:Form 5 - Lithologies

932 - Add

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

Site #:

CSK-17A

Date Form Submitted: 2019-11-22 13:07:02

Age (My)

Assumedvelocity(km/s)

Lithology

Paleo-environment

Avg. accum.
rate (m/My)

Comments

0 - 30

Seismic unit S1;subaerial eruptions
and mass wasting ofcaldera cliffs<0.0020

1.6

volcaniclastics,
turbidites, debris
flows, muds

Intra caldera fill

15,000Interpretation fromJohnston et al. (2015)30 - 88

Seismic unit S2;
mainly submarine
eruptions of Kameni
Volcano0.0036
to0.0020

1.8

volcaniclastics,
muds

Intra-caldera fill35,000Interpretation fromJohnston et al. (2015)

88 - 186

Seismic unit S3: endof LBA eruption;caldera flooding

0.0036

1.9

coarse gravels,
tuffs, debris
avalanches, debris
flows

Intra-caldera fill

>1,000,000

Interpretation fromJohnston et al. (2015)
and Nomikou et al.
(2016a)186 - 420

Pre-S3: Late Bronze
Age eruption (top of
intracaldera tuffs)

3600
years

2.0

Blocky unweldedtuffs, with possible
welded layers andlavas

Intra-caldera fill

>1,000,000

Interpretation ofJohnston et al. (2015)
and Nomikou et al.
(2016a)Generated: 2020-01-29T22:52:21+00:00

CSK-17A
GEOMAR_P1006

GEOMAR_P1006

TWT(msec)

TWT(msec)

S1

a)

1Km

S2
S3

b)

1Km

CSK-17A: GEOMAR_P1006, CDP 19938 (a and b)
GEOMAR_P1006

CSK-06B
GEOMAR_P3003 CSK-17A

GEOMAR_P3004

CSK-05B

Location map: CSK-05B_location.pdf
SEGY-data data: GEOMAR_P1006.sgy
Navigation data: GEOMAR_P1006.txt
Bathymetry: CSK_Bathymetry.grd, CSK_Bathymetry.pdf
Backscatter: CSK_Backscatter.grd, CSK_Backscatter.pdf
Gravity-FreeAir: CSK_Gravity_FreeAir.grd, CSK_Gravity_FreeAir.pdf
Gravity-Bouguer: CSK_Gravity_Bouguer.grf,CSK_Gravity_Bouguer.pdf

Site Information:
Coordinates: 36.4339/25.3819
Water depth: 386 m
Penetration: 420 m

Additional data available:
Magnetic: CSK_Magnetic.grd,CSK_Magnetic.pdf
3.5kHz: Sediment_Proﬁler.zip, contains 3.5kHz proﬁles, do not run along site survey proﬁleIODP Site Forms

932 - Add

Form 1 – General Site Information

Section A: Proposal Information

Proposal Title

Date Form Submitted

Volcanism and tectonics in an island-arc rift environment (VolTecArc): Christiana-Santorini-Kolumbo marine
volcanic field, Greece

2019-11-22 13:07:02

Site-Specific CSK-18A is sited in the southern basin of Santorini caldera. The aim is to penetrate intracaldera seismic units
Objectives with S1, S2, and S3 in order to characterise them, as well as to penetrate below unit S3 (probable intracaldera tuffof the LBA eruption). This site is complementary to sites in the northern caldera basin, as together they will
Priority(Must include generalobjectives in proposal)

List Previous
Drilling in Area

provide a complete understanding of the caldera fill and collapse history.

DSDP hole 378 was drilled in 1975 in the Cretan basin 60 km SSW of Santorini. Onland drilling on Kameni
islands to 200 m depth in 1987-88.

Section B: General Site Information

Site Name:

Area or Location: Santorini caldera (southern basin),

CSK-18A

Aegean Sea, Greece

If site is a reoccupation of an
old DSDP/ODP Site, Please
include former Site#

Latitude:Deg:

Longitude:

Deg:

Distance to Land: 1(km)

25.3942

Coordinate System:
Priority of Site:

Jurisdiction: Greek territorial waters

36.3755

WGS 84
Primary:

Generated: 2020-01-29T22:52:21+00:00⃞

Alternate:✓⃞

Water Depth (m): 291

Section C: Operational Information

Proposed
Penetration (m):Sediments

Basement

380

0Total Sediment Thickness (m)380Total Penetration (m):General Lithologies:
Coring Plan:(Specify or check)

Coarse intracaldera sediments, breccias,
landslides, lavas, muds
2 Holes APC/HLAPC/XCB to refusal; drill ahead to 175 mbsf and RCB to 380 mbsf; wirleline logging in Hole C(Tripple Combo, FMS Sonic, VSI)
APC

Wireline Logging
Plan:

380

✓

XCB

✓

RCB

Standard Measurements

Special Tools

✓
✓
✓
✓
✓
✓
✓
✓

Magnetic Susceptibility

WL
Porosity
DensityGamma Ray
Resistivity
Sonic (∆t)
Formation Image (Res)VSP (zero offset)

Borehole Temperature✓✓✓

Re-entry

PCS

Other
tools:

Formation Image(Acoustic)
VSP (walkaway)
LWD

Formation Temperature& Pressure
Other Measurements:

Estimated Days:

Drilling/Coring:

4.5

Logging:1

Total On-site:

5.5

Observatory Plan:

Longterm Borehole Observation Plan/Re-entry Plan

Potential Hazards/
Weather:

Shallow Gas

Complicated Seabed
Condition

Hydrothermal Activity

Preferred weather window

Hydrocarbon

Soft SeabedLandslide and Turbidity
Current

Late autumn,
winter or early
springShallow Water Flow

Currents

Gas Hydrate

Abnormal Pressure

Fracture Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H2S

High Dip Angle

Ice Conditions(e.g., sea-floor cables,
dump sites)

CO2
Sensitive marine
habitat (e.g., reefs,

vents)

Other:

Generated: 2020-01-29T22:52:21+00:00

High winds, dense tourist shipping. Multiple cruise liners in the summer months. No bright spots
indicative of gas on seismic profiles.

IODP Site Forms

Proposal #:932 - Add

Form 2 - Site Survey Detail

Site #:

Data Type

CSK-18A

Date Form Submitted: 2019-11-22 13:07:02

In SSDB

Details of available data and data that are still to be collected

1a High resolution seismic reflection (primary)yes

Line: GEOMAR_P1006
Position: CDP 13690

1b High resolution seismic seismic reflection (crossing)yes

Line: SBL20060429_134104-REPROC
Position: CDP 1845

2a Deep penetration seismic reflection (primary)no2b Deep penetration seismic reflection (crossing)no

3 Seismic Velocityno4 Seismic Gridno5a Refraction (surface)no5b Refraction (bottom)

no6 3.5 kHzno

Data and info see Site CSK-01A

7 Swath bathymetrynoData and info see Site CSK-01A

8a Side looking sonar (surface)noData and info see Site CSK-01A

8b Side looking sonar (bottom)no9 Photography or video

no10 Heat Flowno11a Magnetics

noData and info see Site CSK-01A

11b Gravity

noData and info see Site CSK-01A

12 Sediment cores

yes

Mostly Box corer from 2006 R/V Aegeao expedition of variable length up
to 1 m. Mixture of hemipelagic muds and volcaniclastics

13 Rock samplingno14a Water current datano14b Ice Conditions

no15 OBS microseismicity

no16 Navigationyes

17 Otherno

Generated: 2020-01-29T22:52:21+00:00

Data and info see Site CSK-01A

GEOMAR_P1006.txt, 20060429_134104-REPROC.txt

IODP Site Forms

Proposal #:Form 4 - Environmental Protection

932 - Add

Site #:

CSK-18A

Date Form Submitted: 2019-11-22 13:07:02

Pollution & Safety Hazard

Comment

1. Summary of operations at site

Two holes (A, B) APC/HLAPC to refusal including 4 temperature measurements, each followed by
XCB to refusal; Hole C: RCB drilling ahead until 175 mbsf, RCB to 380 mbsf, log as shown on form
1

2. All hydrocarbon occurrences based on
previous DSDP/ODP/IODP drillingnon

3. All commercial drilling in this area that
produced or yielded significant
hydrocarbon showsnon

4. Indications of gas hydrates at thislocationnon

5. Are there reasons to expecthydrocarbon accumulations at this site?

non

6. What "special" precautions will betaken during drilling?

non

7. What abandonment procedures need
to be followed?

non

8. Natural or manmade hazards which
may affect ship's operations

heavy ship traffic in the Caldera but minimized during autumn to early spring

9. Summary: What do you consider the
major risks in drilling at this site?

coarse clastics and lava blocks

Generated: 2020-01-29T22:52:21+00:00

IODP Site Forms

Proposal #:Form 5 - Lithologies

932 - Add

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

Site #:

CSK-18A

Date Form Submitted: 2019-11-22 13:07:02

Age (My)

Assumedvelocity(km/s)

Lithology

Paleo-environment

Avg. accum.
rate (m/My)

Comments

0 - 20

Seismic unit S1:subaerial eruptions
and mass wasting of
the caldera cliffs<0.0020

1.6

volcaniclastics,
turbidites, debris
flows, muds

intra caldera fill

10,000Interpretation fromJohnston et al. (2015)20 - 77

Seismic unit S2:
mainly submarine
eruptions of Kameni
Volcano0.0036
to0.0020

1.8

volcaniclastics,
muds

Intra-caldera fill36,000Interpretation fromJohnston et al. (2015)

77 - 218

Seismic unit S3: endof LBA eruption;caldera flooding

0.0036

1.9

Coarse gravels,
tuffs, debris
avalanches, debris
flows

Intra-caldera fill

>1,000,000

Interpretation fromJohnston et al. (2015)
and Nomikou et al.
(2016a)218 - 380

Sub-S3: Late
Bronze Age eruption(top of intracaldera
tuffs)

0.00362.0

Blocky unweldedtuffs, with possible
welded layers andlavas

Intra-caldera fill

>1,000,000

Interpretation ofJohnston et al. (2015)

Generated: 2020-01-29T22:52:21+00:00

CSK-18A
NE

SW

NW

500m

b)

SW

NW

20060429_134104- SE
REPROC

TWT(msec)

GEOMAR_P1006

a)
NE

GEOMAR_P1006

500m

20060429_134104- SE
REPROC

TWT(msec)

S1

S1
S2

S2

S3
S3

c)

500m

d)

500m

CSK-18A: GEOMAR_P1006, CDP 13690 (a and c); 20060429_134104-REPROC, CDP 1845 (b and d)
20060504_052810

20060504_044615

20060429_134104

GEOMAR_P1006

CSK-07B

CSK-08B
CSK-18A

Files to be uploaded to SSDB:
Location map: CSK-08B_location.pdf
SEGY-data data: GEOMAR_P1006.sgy, 20060429_134104-REPROC.sgy Site Information:
Navigation data: GEOMAR_P1006.txt, 20060429_134104-REPROC.txt
Coordinates: 36.3755/25.3942
Bathymetry: CSK_Bathymetry.grd, CSK_Bathymetry.pdf
Water depth: 291 m
Backscatter: CSK_Backscatter.grd, CSK_Backscatter.pdf
Penetration: 380 m
Gravity-FreeAir: CSK_Gravity_FreeAir.grd, CSK_Gravity_FreeAir.pdf
Gravity-Bouguer: CSK_Gravity_Bouguer.grf,CSK_Gravity_Bouguer.pdf
Additional data available:
Magnetic: CSK_Magnetic.grd, CSK_Magnetic.pdf
3.5kHz: Sediment_Proﬁler.zip, contains 3.5kHz proﬁles, do not run along site survey proﬁleIODP Site Forms

932 - Add

Form 1 – General Site Information

Section A: Proposal Information

Proposal Title

Date Form Submitted

Volcanism and tectonics in an island-arc rift environment (VolTecArc): Christiana-Santorini-Kolumbo marine
volcanic field, Greece

2019-11-22 13:07:02

Site-Specific CSK-19A is sited in the Anafi Basin. The aim is to penetrate the entire volcano-sedimentary fill of this basin
Objectives with as far as the Alpine basement. The basin potentially records the full volcanic history of Santorini (and any
older centres) since rift inception, but not of Kolumbo Volcano. The hole will reconstruct the subsidence andPriority

sedimentary history of this basin, to compare with that of the Anhydros Basin. It will transect all six seismic(Must include generalunits present in the basin (B1 to B6).
objectives in proposal)

List Previous
Drilling in Area

DSDP hole 378 was drilled in 1975 in the Cretan basin 60 km SSW of Santorini

Section B: General Site Information

Site Name:

Area or Location: Anafi Basin, Aegean Sea, Greece

CSK-19A

If site is a reoccupation of an
old DSDP/ODP Site, Please
include former Site#

Latitude:Deg:

Longitude:

Deg:

Distance to Land: 9(km)

25.7503

Coordinate System:
Priority of Site:

Jurisdiction: Greek territorial waters

36.5563

WGS 84
Primary:

Generated: 2020-01-29T22:52:21+00:00⃞

Alternate:✓⃞

Water Depth (m): 688

Section C: Operational Information

Proposed
Penetration (m):Sediments

Basement

730

10

Total Sediment Thickness (m)730

Total Penetration (m):General Lithologies:
Coring Plan:(Specify or check)

Limestone, schist or granite

Muds, volcaniclastics, debris flows, turbidites

2 Holes APC/HLAPC to refusal, each followed by XCB to 610 mbsf; drill ahead in Hole C to 575 mbsf with the option of one or two coredintervals of 50 meters in between and afterwards RCB to 740 mbsf, including 10 m basement or until refusal; wireline logging in Hole C(Tripple Combo, FMS Sonic, VSI)

APC

Wireline Logging
Plan:

740

✓

XCB

✓

RCB

Standard Measurements

Special Tools

✓
✓
✓
✓
✓
✓
✓
✓

Magnetic Susceptibility

WL
Porosity
DensityGamma Ray
Resistivity
Sonic (∆t)
Formation Image (Res)VSP (zero offset)

Borehole Temperature✓✓

Re-entry

PCS

Other
tools:

Formation Image(Acoustic)
VSP (walkaway)
LWD

Formation Temperature& Pressure
Other Measurements:

Estimated Days:

Drilling/Coring:

9.8

Logging:

1.6

Total On-site:

11.4

Observatory Plan:

Longterm Borehole Observation Plan/Re-entry Plan

Potential Hazards/
Weather:

Shallow Gas

Complicated Seabed
Condition

Hydrothermal Activity

Preferred weather window

Hydrocarbon

Soft SeabedLandslide and Turbidity
Current

Late autumn,
winter or early
springShallow Water Flow

Currents

Gas Hydrate

Abnormal Pressure

Fracture Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H2S

High Dip Angle

Ice Conditions(e.g., sea-floor cables,
dump sites)

CO2
Sensitive marine
habitat (e.g., reefs,

vents)

Other:

Generated: 2020-01-29T22:52:21+00:00

High winds, dense tourist shipping

IODP Site Forms

Proposal #:932 - Add

Form 2 - Site Survey Detail

Site #:

Data Type

CSK-19A

Date Form Submitted: 2019-11-22 13:07:02

In SSDB

Details of available data and data that are still to be collected

1a High resolution seismic reflection (primary)yes

Line: HH06-04-REPROC
Position: CDP 1919

1b High resolution seismic seismic reflection (crossing)yes

Line: GEOMAR_P5017
Position: CDP 1298

2a Deep penetration seismic reflection (primary)no2b Deep penetration seismic reflection (crossing)no

3 Seismic Velocityno4 Seismic Gridno5a Refraction (surface)no5b Refraction (bottom)

no6 3.5 kHzyes

Data and info see Site CSK-01A

7 Swath bathymetrynoData and info see Site CSK-01A

8a Side looking sonar (surface)noData and info see Site CSK-01A

8b Side looking sonar (bottom)no9 Photography or video

no10 Heat Flowno11a Magnetics

noData and info see Site CSK-01A

11b Gravity

noData and info see Site CSK-01A

12 Sediment coresyes~2m long gravity core (POS513/20), 7.8 km from site position showing
soft hemipelagic muds with carbonate clasts, some cm thick intercalated
ash layers and two dm-scaled tephra layers unto coarse ash and finelapilli (up to 1 cm); Sedimentation rate ~9 cm/ka.

13 Rock samplingno14a Water current datano14b Ice Conditions

no15 OBS microseismicity

no16 Navigationyes

17 Otherno

Generated: 2020-01-29T22:52:21+00:00

Data and info see Site CSK-01A

HH06-15-REPROC.txt, GEOMAR_P5017.txt

IODP Site Forms

Proposal #:Form 4 - Environmental Protection

932 - Add

Site #:

CSK-19A

Date Form Submitted: 2019-11-22 13:07:02

Pollution & Safety Hazard

Comment

1. Summary of operations at site

Two holes (A, B) APC/HLAPC to refusal including 4 temperature measurements, each followed by
XCB to 610 mbsf; Hole C: RCB drilling ahead until 575 mbsf with the option of one or two coredintervals of 50 meters in between, RCB to 740 mbsf including 10 m of basement, log as shown on
form 1

2. All hydrocarbon occurrences based on
previous DSDP/ODP/IODP drillingno3. All commercial drilling in this area that
produced or yielded significant
hydrocarbon showsnon

4. Indications of gas hydrates at thislocationnon

5. Are there reasons to expecthydrocarbon accumulations at this site?

non

6. What "special" precautions will betaken during drilling?

non

7. What abandonment procedures need
to be followed?

non

8. Natural or manmade hazards which
may affect ship's operations

sailing traffic may be existent but minimized during autumn to early spring

9. Summary: What do you consider the
major risks in drilling at this site?

Target drill depth for XCB in Holes A and B may be to deep for XCB only but is covered by RCB in
Hole C

Generated: 2020-01-29T22:52:21+00:00

IODP Site Forms

Proposal #:Form 5 - Lithologies

932 - Add

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

Site #:

CSK-19A

Date Form Submitted: 2019-11-22 13:07:02

Age (My)

Assumedvelocity(km/s)

Lithology

Paleo-environment

Avg. accum.
rate (m/My)

Comments

Pleistocene/
Holocene

1.6

hemipelagic muds,
volcaniclastics,
turbidites

filled submarine riftbasin

140

lithology similar like ingravity core;interpretation after
Nomikou et al. (2018)130

chaotic layering
implicate kind of
mass transport
deposits and highsedimentation rate
due to tectonics?;
interpretation after
Nomikou et al. (2018)

120

More turbiditic
deposits andsubhorizontal
layering, tectonics?
Interpretation
Nomikou et al. (2018)

120

Chaotic layering
implicates masstransport deposits
and high
sedimentation rate
due to tectonics?
Interpretation
Nomikou et al. (2018)120

steep bedding
assumes tectonics
after initial fill.
Interpretation
Nomikou et al. (2018)
initial filling sequenceof the rift with mixed
volcaniclastic andcontinental material.
Interpretation
Nomikou et al. (2018)

0 - 37

Seismic unit B6:
horizontal dipping
beds andunconformity into B5

37 - 260

Seismic unit B5:
subhorizontal
dipping beds,
several stronger
reflectors distributed
within the unit;
chaotic layering in
the upper part?

260 - 323

Seismic unit B4 with
subhorizontal
dipping beds,
several stronger
reflectors distributed
within the unit

323 - 381

Seismic unit B3.
Subhorizontal
bedding, chaotic
layer, MTD?
Unconformity onto
steep layered unit
B2.

Early
Pleistocene/
Pliocene

381 - 512

Seismic unit B2

Pleistocene

Early?
Pleistocene

1.8

hemipelagic muds,
volcaniclastics,
turbidites, MTD´s?

2.0

hemipelagic muds,
volcaniclastics,
turbidites, MTD´s?

filled submarine riftbasin

filled submarine riftbasinhemipelagic muds,
volcaniclastics,
turbidites, MTD´s?

filled submarine riftbasin

earlyPleistocene?/ 2.4
Plioceneturbidites,
hemipelagics,
volcaniclastics,
MTD´sfilled submarine riftbasin

512 - 730

Seismic unit B1;
unconformity into
continental
basement

Pliocene

2.6

MTD´s, sands andgravel, turbidites,
hemipelagic muds,
volcaniclastics

submarine tocontinental; initial
filling of a rift basin

110

730 - 740

continental
basement

Mesozoic

3.0

limestone, shists,
granites

continental
basement??

Generated: 2020-01-29T22:52:21+00:00

2.1

CSK-19A
WNW

ESE

NW

GEOMAR_P5017

SE

TWT(msec)

TWT(msec)

HH06-04-REPROC

a)

b)

1Km

WNW

HH06-04-REPROC

ESE

NW

B4
B3

c)

GEOMAR_P5017

SEd) BS CSK-19A 300 m to the N

500 m

B6
B5

TWT(msec)

TWT(msec)

B6
B5

500 m

B2

BS

B1
1Km

B4
B3
B2
B1

CSK-19A: HH06-04-REPROC, CDP 1919 (a and c); GEOMAR_P5017, CDP 1298 (b and d)
GEOMAR_P5017

HH06-15

HH06-04
CSK-09A

HH06-09

CSK-19A
CSK-10A

Files to be uploaded to SSDB:
Location map: CSK-09A-10A_location.pdf
SEGY-data data: HH06-15-REPROC.sgy, GEOMAR_P5017.sgy
Navigation data: HH06-15-REPROC.txt, GEOMAR_P5017.txt
Bathymetry: CSK_Bathymetry.grd, CSK_Bathymetry.pdf
Backscatter: CSK_Backscatter.grd, CSK_Backscatter.pdf
Gravity-FreeAir: CSK_Gravity_FreeAir.grd, CSK_Gravity_FreeAir.pdf
Gravity-Bouguer: CSK_Gravity_Bouguer.grf,CSK_Gravity_Bouguer.pdf

Site Information:
Coordinates: 36.5563/25.7503
Water depth: 688 m
Penetration: 740 m

Additional data available:
Magnetic: CSK_Magnetic.grd,CSK_Magnetic.pdf
3.5kHz: Sediment_Proﬁler.zip, contains 3.5kHz proﬁles, do not run along site survey proﬁleIODP Site Forms

932 - Add

Form 1 – General Site Information

Section A: Proposal Information

Proposal Title

Date Form Submitted

Volcanism and tectonics in an island-arc rift environment (VolTecArc): Christiana-Santorini-Kolumbo marine
volcanic field, Greece

2019-11-22 13:07:02

Site-Specific CSK-20A is sited in the Christiana Basin. This basin is deeper than the Anhydros and Anafi Basins, and is
Objectives with located SW of Santorini. Its volcano-sedimentary fill potentially records the earlier volcanic history of the CSK
volcanic field (including the products of Christiana and early Santorini), as well as younger Santorini andPriority

possibly Milos Volcano. The hole will pass through alternating volcanic units, including volcaniclastics from
(Must include general
Santorini (marine units Th1-3, with three possible pyroclastic flow deposits Pf1-3), and volcaniclastics fromobjectives in proposal)
Christiana (Ch1, 2), to the pre-volcanic basement.

List Previous
Drilling in Area

DSDP hole 378 was drilled in 1975 in the Cretan basin 60 km SSW of Santorini

Section B: General Site Information

Site Name:

Area or Location: Christiana Basin, Aegean Sea,

CSK-20A

GreeceIf site is a reoccupation of an
old DSDP/ODP Site, Please
include former Site#

Latitude:Deg:

Longitude:

Deg:

Distance to Land: 10(km)

25.1501

Coordinate System:
Priority of Site:

Jurisdiction: Greek territorial waters

36.3127

WGS 84
Primary:

Generated: 2020-01-29T22:52:21+00:00⃞

Alternate:✓⃞

Water Depth (m): 515

Section C: Operational Information

Proposed
Penetration (m):Sediments

Basement899

10

Total Sediment Thickness (m)899

Total Penetration (m):General Lithologies:
Coring Plan:(Specify or check)Muds, volcaniclastics, debris flows, turbidites
2 Holes APC/HLAPC to refusal, each followed by XCB to 675 mbsf; drill ahead in Hole C to 575 mbsf with the option of one or two cored RCB
intervals of 50 meters in between and afterwards RCB to 909 mbsf, including 10 m of pre volcanic basement; wireline logging in Hole C(Tripple Combo, FMS Sonic, VSI)

APC

Wireline Logging
Plan:

909

✓

XCB

✓

RCB

Standard Measurements

Special Tools

✓
✓
✓
✓
✓
✓
✓
✓

Magnetic Susceptibility

WL
Porosity
DensityGamma Ray
Resistivity
Sonic (∆t)
Formation Image (Res)VSP (zero offset)

Borehole Temperature✓✓✓

Re-entry

PCS

Other
tools:

Formation Image(Acoustic)
VSP (walkaway)
LWD

Formation Temperature& Pressure
Other Measurements:

Estimated Days:

Drilling/Coring:

10.5

Logging:

1.9

Total On-site:

12.4

Observatory Plan:

Longterm Borehole Observation Plan/Re-entry Plan

Potential Hazards/
Weather:

Shallow Gas

Complicated Seabed
Condition

Hydrothermal Activity

Preferred weather window

Hydrocarbon

Soft SeabedLandslide and Turbidity
Current

Late autumn,
winter or early
springShallow Water Flow

Currents

Gas Hydrate

Abnormal Pressure

Fracture Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H2S

High Dip Angle

Ice Conditions(e.g., sea-floor cables,
dump sites)

CO2
Sensitive marine
habitat (e.g., reefs,

vents)

Other:

Generated: 2020-01-29T22:52:21+00:00

High winds, dense tourist shipping

IODP Site Forms

Proposal #:932 - Add

Form 2 - Site Survey Detail

Site #:

Data Type

CSK-20A

Date Form Submitted: 2019-11-22 13:07:02

In SSDB

Details of available data and data that are still to be collected

1a High resolution seismic reflection (primary)yes

Line: GEOMAR_P5009
Position: CDP 3013

1b High resolution seismic seismic reflection (crossing)yes

Line: GEOMAR_P5008
Position: CDP 4521
Not available yet

2a Deep penetration seismic reflection (primary)no2b Deep penetration seismic reflection (crossing)no

3 Seismic Velocityno4 Seismic Gridno5a Refraction (surface)no5b Refraction (bottom)

no6 3.5 kHzno

Data and info see Site CSK-01A

7 Swath bathymetrynoData and info see Site CSK-01A

8a Side looking sonar (surface)noData and info see Site CSK-01A

8b Side looking sonar (bottom)no9 Photography or video

no10 Heat Flowno11a Magnetics

noData and info see Site CSK-01A

11b Gravity

noData and info see Site CSK-01A

12 Sediment coresno~1m and ~3.5m long gravity cores (POS513/60 and 9), 3.8 km and 8 km
from site position showing a) coarse or hardened volcaniclastics after 1
meter of soft hemipelagic muds (Minoan eruption deposits) and b)
homogenous hemipelagic muds with some 1 to 20 cm thick intercalated
ash layers (max grain size= 2 mm) ; Sedimentation rate ~6 cm/ka in core
POS513/9.

13 Rock samplingno14a Water current datano14b Ice Conditions

no15 OBS microseismicity

no16 Navigationyes

17 Otherno

Generated: 2020-01-29T22:52:22+00:00

Data and info see Site CSK-01A

GEOMAR_P5009.txt, GEOMAR_P5008.txt

IODP Site Forms

Proposal #:Form 4 - Environmental Protection

932 - Add

Site #:

CSK-20A

Date Form Submitted: 2019-11-22 13:07:02

Pollution & Safety Hazard

Comment

1. Summary of operations at site

Two holes (A, B) APC/HLAPC to refusal including 4 temperature measurements, each followed by
XCB to 675 mbsf; Hole C: RCB drilling ahead until 575 mbsf with the option of one or two coredintervals of 50 meters in between, RCB to 909 mbsf including 10 m of basement, log as shown on
form 1

2. All hydrocarbon occurrences based on
previous DSDP/ODP/IODP drillingnon

3. All commercial drilling in this area that
produced or yielded significant
hydrocarbon showsnon

4. Indications of gas hydrates at thislocationnon

5. Are there reasons to expecthydrocarbon accumulations at this site?

non

6. What "special" precautions will betaken during drilling?

non

7. What abandonment procedures need
to be followed?

non

8. Natural or manmade hazards which
may affect ship's operations

sailing traffic may be existent but minimized during autumn to early spring

9. Summary: What do you consider the
major risks in drilling at this site?

coarser volcaniclastics from major eruptions

Generated: 2020-01-29T22:52:22+00:00

IODP Site Forms

Proposal #:Form 5 - Lithologies

932 - Add

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

Site #:

Age (My)

CSK-20A

Assumedvelocity(km/s)

Lithology

1.6

hemipelagic muds,
volcaniclastics,
turbidites

1.65

Pumiceous tuffs,
debris flows andthin overlying
surface muds

1.7

hemipelagic muds,
volcaniclastics,
turbidites

1.8

Pumiceous tuffs,
debris flows

Date Form Submitted: 2019-11-22 13:07:02

Avg. accum.
rate (m/My)

Comments

3600

Based oninterpretation of
TsampourakiKraounaki et al.
(2018).

>1,000,000

Based oninterpretation of
TsampourakiKraounaki et al.
(2018)

130

Based oninterpretation of
TsampourakiKraounaki et al.
(2018).

>1,000,000

Based oninterpretation of
TsampourakiKraounaki et al.
(2018).

filled marine basin

100

Based oninterpretation of
TsampourakiKraounaki et al.
(2018).

Paleo-environment

0-7

Holocene
backgroundsedimentation withsome
volcanoclastics

7 - 19Late Bronze Age
eruption, submarine
pyroclastic flow
deposit (PF 3)

19 - 80

Marinesedimentation (Th3)
between pyroclastic
flows Pf2 and Pf3

Pleistocene

80 - 170

Seismic unit Pf2,
probable pyroclastic
flow deposit from
Santorini

Pleistocene;possibly
0.42 My170 - 237

Marinesedimentation Th2
between seismic
units Pf2 and PF1,
with volcaniclastics
from Christiana,
Santorini

Pleistocene/
Pliocene?

1.85

hemipelagic muds,
volcaniclastics,
turbidites

237 - 258

Possible pyroclastic
flow deposit (Pf1)

Pleistocene/
Pliocene

1.9

Pumiceous tuffs,
debris flows?

filled marine basin>1,000,000

258 - 350

Inter-fingeringmarinesedimentation andpyroclastic flow fromChristiana (Ch2)and Pf1

Pliocene

1.95

hemipelagic muds,
volcaniclastics,
turbidites

filled marine basin

80

350 - 548

marinesedimentation andpyroclastic flow fromChristiana (Ch2)

Pliocene

1.95

hemipelagic muds,
volcaniclastics,
turbidites

filled marine basin

80548 - 899

Marinesedimentation (Th1)
passing down into
possible
volcaniclastics fromChristiana (Ch1)

Pliocene

2.0

hemipelagic muds,
volcaniclastics,
turbidites

filled marine basin

80899 - 909

pre-volcanic
basement

Mesozoic

3.0

limestone, schists,
granites?

continental
basement?

?

<0.00360.0036

Generated: 2020-01-29T22:52:22+00:00

filled marine basin

filled marine basin

filled marine basin

filled marine basin

CSK-20A
E

a)b)

CSK-20A: GEOMAR_P5009, CDP 3013 (a and c);
GEOMAR_P5008, CDP 4521 (b and d)

500m

1Km

WSW

GEOMAR_P5009

c)

ENE

d)

Pf3
Th3

Pf2
Pf1

Th2
Ch2

500m

Pf3
Th3

Pf2
Pf1

Th2

Ch2

Th1

Th2
Th1

Ch1

Ch1

1Km

pre-volcanic basement

WSW

GEOMAR_P5008
NNW
SSE

GEOMAR_P5009
HH06-50

ENE

pre-volcanic basement

500m

GEOMAR_P5008
NNW
SSE

500m

Files to be uploaded to SSDB:
Location map: CSK-20A_location.pdf
SEGY-data data: GEOMAR_P5009.sgy,
GEOMAR_P5008.sgy
Navigation data: GEOMAR_P5009.txt,
GEOMAR_P5008.txt
Bathymetry: CSK_Bathymetry.grd, 0.5Km
CSK_Bathymetry.pdf
Backscatter: CSK_Backscatter.grd,
CSK_Backscatter.pdf
Gravity-FreeAir: CSK_Gravity_FreeAir.grd,
CSK_Gravity_FreeAir.pdf
Gravity-Bouguer:
CSK_Gravity_Bouguer.grf,CSK_Gravity_Bouguer.pdf
Site Information:
Coordinates: 36.3127/25.1501
Water depth: 515 m
Penetration: 909 m

Additional data available:
Magnetic: CSK_Magnetic.grd,CSK_Magnetic.pdf
3.5kHz: Sediment_Profiler.zip, contains 3.5kHz profiles, do not run along site
survey profile.
GEOMAR_P5009

CSK-13A
CSK-20A
CSK-14A

GEOMAR_P5006

GEOMAR_P5008

20060506_214929

IODP Site Forms

932 - Add

Form 1 – General Site Information

Section A: Proposal Information

Proposal Title

Date Form Submitted

Volcanism and tectonics in an island-arc rift environment (VolTecArc): Christiana-Santorini-Kolumbo marine
volcanic field, Greece

2019-11-22 13:07:02

Site-Specific CSK-21A lies in the Anhydros Basin on the SE submarine flank of Kolumbo Seamount Volcano. The aim is to
Objectives with penetrate seismically recognized volcanic eruption units from Kolumbo (K1, K3, K5), as well as many units
from Santorini. This will enable characterisation of the products of the Kolumbo eruptions, as well as
Priority(Must include generalobjectives in proposal)

List Previous
Drilling in Area

construction of a coherent stratigraphy for Santorini and Kolumbo together.

DSDP hole 378 was drilled in 1975 in the Cretan basin 60 km SSW of Santorini.

Section B: General Site Information

Site Name:

Area or Location: Anhydros Basin, Aegean Sea,

CSK-21A

GreeceIf site is a reoccupation of an
old DSDP/ODP Site, Please
include former Site#

Latitude:Deg:

Longitude:

Deg:

Distance to Land: 8(km)

25.5053

Coordinate System:
Priority of Site:

Jurisdiction: Greek territorial water

36.5068

WGS 84
Primary:

Generated: 2020-01-29T22:52:22+00:00⃞

Alternate:✓⃞

Water Depth (m): 309

Section C: Operational Information

Proposed
Penetration (m):Sediments

Basement

730

0

Total Sediment Thickness (m)730

Total Penetration (m):General Lithologies:
Coring Plan:(Specify or check)Muds, volcaniclastics, debris flows, turbidites
2 Holes APC/HLAPC to refusal, each followed by XCB to 610 mbsf; drill ahead in Hole C to 575 mbsf with the option of one or two cored
RCB intervals of 50 meters in between and afterwards RCB to 730 mbsf; wireline logging in Hole C (Tripple Combo, FMS Sonic, VSI)

APC

Wireline Logging
Plan:

730

✓

XCB

✓

RCB

Standard Measurements

Special Tools

✓
✓
✓
✓
✓
✓
✓
✓

Magnetic Susceptibility

WL
Porosity
DensityGamma Ray
Resistivity
Sonic (∆t)
Formation Image (Res)VSP (zero offset)

Borehole Temperature✓✓✓

Re-entry

PCS

Other
tools:

Formation Image(Acoustic)
VSP (walkaway)
LWD

Formation Temperature& Pressure
Other Measurements:

Estimated Days:

Drilling/Coring:

10.4

Logging:

1.5

Total On-site:

11.9

Observatory Plan:

Longterm Borehole Observation Plan/Re-entry Plan

Potential Hazards/
Weather:

Shallow Gas

Complicated Seabed
Condition

Hydrothermal Activity

Preferred weather window

Hydrocarbon

Soft SeabedLandslide and Turbidity
Current

Late autumn,
winter or early
springShallow Water Flow

Currents

Gas Hydrate

Abnormal Pressure

Fracture Zone

Diapir and Mud Volcano

Man-made Objects

Fault

High Temperature

H2S

High Dip Angle

Ice Conditions(e.g., sea-floor cables,
dump sites)

CO2
Sensitive marine
habitat (e.g., reefs,

vents)

Other:

Generated: 2020-01-29T22:52:22+00:00

High winds, dense tourist shipping

IODP Site Forms

Proposal #:932 - Add

Form 2 - Site Survey Detail

Site #:

Data Type

CSK-21A

Date Form Submitted: 2019-11-22 13:07:02

In SSDB

Details of available data and data that are still to be collected

1a High resolution seismic reflection (primary)yes

Line: HH06-37-REPROC
Position: CDP 1009

1b High resolution seismic seismic reflection (crossing)yes

Line: HH06-45-REPROC
Position: CDP 5727

2a Deep penetration seismic reflection (primary)no2b Deep penetration seismic reflection (crossing)no

3 Seismic Velocityno4 Seismic Gridno5a Refraction (surface)no5b Refraction (bottom)

no6 3.5 kHzno

Data and info see Site CSK-01A

7 Swath bathymetrynoData and info see Site CSK-01A

8a Side looking sonar (surface)no8b Side looking sonar (bottom)no9 Photography or video

no10 Heat Flowno11a Magnetics

noData and info see Site CSK-01A

11b Gravity

noData and info see Site CSK-01A

12 Sediment coresno~1m long gravity core (POS513/19), 9 km from site position showing
hemipelagic muds and > 50 cm thick ash and pumice layer (max grain
size= 40 mm); Sedimentation rate ~5 cm/ka .

13 Rock samplingno14a Water current datano14b Ice Conditions

no15 OBS microseismicity

no16 Navigationyes

17 Otherno

Generated: 2020-01-29T22:52:22+00:00

Data and info see Site CSK-01A

HH06-37-REPROC.txt, HH06-45-REPROC.txt

IODP Site Forms

Proposal #:Form 4 - Environmental Protection

932 - Add

Site #:

CSK-21A

Date Form Submitted: 2019-11-22 13:07:02

Pollution & Safety Hazard

Comment

1. Summary of operations at site

Two holes (A, B) APC/HLAPC to refusal including 4 temperature measurements, each followed by
XCB to 610 mbsf; Hole C: RCB drilling ahead until 575 mbsf with the option of one or two coredintervals of 50 meters in between, RCB to 730 mbsf, log as shown on form 1

2. All hydrocarbon occurrences based on
previous DSDP/ODP/IODP drillingnon

3. All commercial drilling in this area that
produced or yielded significant
hydrocarbon showsnon

4. Indications of gas hydrates at thislocationnon

5. Are there reasons to expecthydrocarbon accumulations at this site?

non

6. What "special" precautions will betaken during drilling?

non

7. What abandonment procedures need
to be followed?

non

8. Natural or manmade hazards which
may affect ship's operations

sailing traffic may be existent but minimized during autumn to early spring

9. Summary: What do you consider the
major risks in drilling at this site?

fine to coarse volcaniclastic in the top 10 meters may be be difficult to penetrate

Generated: 2020-01-29T22:52:22+00:00

IODP Site Forms

Proposal #:Form 5 - Lithologies

932 - Add

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

Site #:

CSK-21A

Date Form Submitted: 2019-11-22 13:07:02

Age (My)

Assumedvelocity(km/s)

Lithology

Paleo-environment

Avg. accum.
rate (m/My)

Comments

0 - 43

Seismic unit K5: AD
1650 eruption of
Kolumbo

AD 1650

1.65

Volcaniclastics(pumiceous)filled submarine riftbasin>1,000,000

Interpretation of
Hubscher et al.
(2015)

43 - 190

Seismic unit K3

Pleistocene

1.75

Volcaniclastics(probably
pumiceous)filled submarine riftbasin>1,000,000

Interpretation of
Hubscher et al.
(2015)

190 - 318

Seismic unit SK3:
Volcaniclastics from
Santorini (including
mass flows) andmarinesedimentation

Pleistocene

1.8

hemipelagic muds,
volcaniclastics,
turbidites, MTDs

filled submarine riftbasin

120Interpretation of
Hubscher et al.
(2015)

318 - 405

Seismic unit K1:
eruption of Kolumbo

Pleistocene

1.95

Volcaniclastics(probably
pumiceous)filled submarine riftbasin>1,000,000

Interpretation of
Hubscher et al.
(2015)

405 - 730

Pre-K1 levels ofbasin sediment fill:
Volcaniclastics from
Santorini (including
mass flows) andmarinesedimentation

Pleistocene/
Pliocene

1.9

hemipelagic muds,
volcaniclastics,
turbidites, MTDs

filled submarine riftbasin

80

Interpretation of
Hubscher et al.
(2015)

Generated: 2020-01-29T22:52:22+00:00

CSK-21A
NNW

SSE

SE

HH06-45-REPROC

NW

HH06-45-REPROC

NW

TWT(msec)

TWT(msec)

HH06-37-REPROC

a)

b)

1Km

NNW

SSE

3Km

SE

K2

K5
K4

Sk3

K1

c)

Sk3

d)

1Km

CSK-04A

CSK-16A

HH06-45

CSK-21A
HH06-22

HH06-37

K3

K4
K1

3Km

CSK-21A: HH06-37-REPROC, CDP 1009 (a and c); HH06-45-REPROC, CDP 5727 (b and d)

HH06-34

HH06-44

CSK-03A

Sk4

K3

Sk4
TWT(msec)

TWT(msec)

K5
HH06-37-REPROC

Files to be uploaded to SSDB:
Location map: CSK-21A_location.pdf
SEGY-data data: HH06-37-REPROC.sgy, HH06-45-REPROC.sgy
Navigation data: HH06-37-REPROC.txt, HH06-45-REPROC.txt
Bathymetry: CSK_Bathymetry.grd, CSK_Bathymetry.pdf
Backscatter: CSK_Backscatter.grd, CSK_Backscatter.pdf
Gravity-FreeAir: CSK_Gravity_FreeAir.grd, CSK_Gravity_FreeAir.pdf
Gravity-Bouguer: CSK_Gravity_Bouguer.grf,CSK_Gravity_Bouguer.pdf

Site Information:
Coordinates:36.5068/25.5053
Water depth: 309 m
Penetration: 730 m

Additional data available:
Magnetic: CSK_Magnetic.grd,CSK_Magnetic.pdf
3.5kHz: Sediment_Proﬁler.zip, contains 3.5kHz proﬁles, do not run along site survey proﬁle