bluuebunny/crossref_metadata_2025 huggingface dataset:
Seismograms for historic Canadian earthquakes: the 1 November 1935 Timiskaming earthquake
Authors: Bent A L
Published: November 2010

For those who are interested in studying historical earthquakes, collecting the data often proves to be the most difficult and most time consuming aspect of the project. For the 1935 (Ms 6.0) Timiskaming earthquake, records from 13 seismograph stations have been
assembled by past and present seismologists at the Geological Survey of Canada (GSC) in Ottawa. This paper catalogs the data set, and briefly describes the seismograms in the collection to assist those who may study this earthquake in the near or distant future. Many of the body waves have been
digitized for a waveform analysis study; these data files may be obtained from the GSC.
Geology, Amer Lake (66H), Deep Rose Lake (66G) and parts of Pelly Lake (66F)
Authors: Tella S
Published: November 2010

This open file consists of three 1:250 000 scale preliminary geological maps Amer Lake, 66H; Deep Rose Lake, 66G; Parts of Pelly Lake, 66F). Bedrock mapping was completed during the field seasons 1976 through to 1983. This compilation map incorporates additional
data from topical studies carried out by several previous workers.
Neoarchean granulite, garnet-biotite paragneiss, mafic schist and minor amphibolite appear to be the oldest rocks in the Amer Lake (66H) region. The oldest supracrustal rocks in the region are metamorphosed layered rocks, intermediate to mafic volcanic rocks, greywacke, chlorite schist, banded iron
formation, with subordinate chert, carbonate, and quartzite. Zircon fractions from a dacite porphyry yielded a U-Pb upper concordia intercept age of 2801 +/- 20 Ma. Although considerable controversy exists as to the age of quartzites in the the Amer Lake area (66H), recent studies confirm an Archean
age for these quartzites. Archean, spinifex textured, komatiitic rocks are associated with the above supracrustal rocks.
Deformed supracrustal rocks of uncertain age, in part consisting of stromatolite bearing units, occur in the Deep Rose Lake map area (66G). Other rock units that range in composition from diorite to granite occur throughout the region, and collectively they represent a basement complex to the
deformed and metamorphosed supracrustal rocks of the Paleoproterozoic Amer group. Zircon fractions from a granite from this basement complex yielded a U-Pb upper concordia intercept age of 2617 +/- 20 Ma. The Paleoproterozoic Amer group is dominately made up of two clastic sequences- a lower
conglomerate-orthoquartzite and an upper feldspathic sandstone-arkose-siltstone, carbonate, and mudstone-siltstone-sandstone rhythmite. Stratabound uranium mineralization occurs within the upper parts of the transitional sequence. The intensity of deformation within the rocks of the Amer group
increases from southwest to northeast with a corresponding increase in metamorphic grade from subgreenschist to lower amphibolite facies. Several north-northwesterly transported thrust sheets have been mapped within the lower Amer group strata. The Amer group was intruded by a younger suite of
granite-syenite plutons. Zircon fractions form a syenite intrusion yielded a U-Pb upper concordia intercept age of 1849 +/- 18 Ma. Paleohelikian clastic
rocks of the Thelon Formatio unconformably overlie the granitoid basement complex and the Amer group.
Northeast-trending ductile high-strain zones (e.g., Amer mylonite zone), and northwest-trending brittle faults affect both the basement and the cover rocks.
At least two periods of displacement occurred along the Amer mylonite zone, and that the latest movement (with a dextral sense of displacement) could be as young as ca. 1.7 Ga.
Investigation of the space-time distribution of earthquakes in the Charlevoix Seismic Zone, Quebec
Authors: Eneva M
Published: November 2010

A detailed analysis of earthquake activity in the Charlevoix Seismic Zone (CSZ) over the period October 1977 to July 1991 does not indicate any significant precursory changes in either the rate of seismic activity or in b-values. This contrasts with numerous
reports of changes in these parameters prior to moderate and large events in other seismically active areas. It must be recognized however that the largest Charlevoix earthquake during the study period was only of magnitude 5.0, and occurred too early (August 1979) for extensive monitoring to be
carried out beforehand. While spatially the activ1ty was mostly random during the time period studied, the largest departure from this behaviour took place in late 1988, near the date of the M6.5 Saguenay earthquake. This event, the largest in eastern North America since 1925, was located 85 km to
the northwest of the CSZ. The apparent connection between the Saguenay earthquake and reduced randomness, or greater clustering, in the CSZ suggest either stress changes in, the CSZ as a result of the earthquake, or the simultaneous response of both the CSZ and the source area of the Saguenay event
to a large­scale tectonic factor.
Generalized geological map of the world and linked databases
Authors:   Geological Survey of Canada
Published: November 2010

The Generalized Geological Map of the World and Linked Databases CD-ROM contains three basic digital data sets. One provides the raw components of a generalized geological map of the world and the other two consist of copper and seafloor mineral deposit sites and
associated descriptive data to be envisaged against the geological backdrop. They are meant for the preparation of displays which visually communicate global geoscientific patterns at scales approximating the 1:35 million scale for which they were prepared. The three data sets, provided in
ARC/INFO, DXF, EOO, GENERATE, and DBF formats, are intended as input data for geographical information systems (GIS) software, which can be used to selectively customize a wide variety of visual displays focused on specific themes. The fourth component of the CD-ROM is a version of SurView, a
MicrosoftR-WindowsTM 3.1 graphical viewing utility, packaged with these three data sets in proprietary format.
Revised seismicity of the Grand Banks and offshore Newfoundland
Authors: Adams J , Wahlström R
Published: November 2010

A comprehensive review of the catalogued seismicity of the Grand Banks of Newfound­land (1922-1994) has revised or added earthquakes in four time periods: 1922-1970, the two largest earthquakes (M::::::5) relocated to Baffin Island (1922) and the northern
Labrador Sea (1962); 1977-1982, added four new earthquakes; 1969-1984, revised the locations and mag­nitudes for five earthquakes; 1984-1994, added 15 earthquakes. Many earthquakes appear to be spatially associated with Mesozoic extensional structures that trend northeastwards across the Grand
Banks. A cluster of six post-1970 earthquakes lies 40-80 km northwest of the Hibernia oilfield and represents the most seismically active region of the Grand Banks.
Quaternary geology digital map of the Pasfield Lake area (74I), Saskatchewan
Authors: Bélanger J R
Published: November 2010

This Open File contains a digital version of the polygon data (map units) of "Quaternary Geology of the Pasfield Lake Area (74 I) Saskatchewan", Saskatchewan Research Council, Open File Report 84-15 (B.T. Schreiner, 1984), previously released on paper at a scale
of 1:250,000. The information has been processed by the GIS Arc/Info and is released in E00 and DXF formats with permission from the author.
The files 74IDXF.EXE and 74IE00.EXE are self extracting by copying the files to a hard drive and typing 74IDXF or 74IE00. The uncompressed 74IDXF.EXE file includes two files: S74I.DXF (surficial geology) and H74I.DXF (Hydrography), the 74IE00.EXE file includes two files: S74I.E00 (surficial
geology) and H74I.E00 (hydrography) The hydrography was obtained from the Digital Chart of the World at 1:1 000 000, and is included to serve as general reference for the geology (digitized at 1:250 000).
For further information on the format of the data please call Andrew Moore, Geological Survey of Canada, Tel.: 613-943-0776.
Quaternary geology digital map of the Wollaston Lake area (64L), Saskatchewan
Authors: Bélanger J R
Published: November 2010

This Open File contains a digital version of the polygon data (map units) of "Quaternary Geology of the Wollaston Lake Area (64 L) Saskatchewan", Saskatchewan Research Council, Open File Report 84-14 (B.T. Schreiner, 1984), previously released on paper at a scale
of 1:250,000. The information has been processed by the GIS Arc/Info and is released in E00 and DXF formats with permission from the author.
The files 64LDXF.EXE and 64LE00.EXE are self extracting by copying the files to a hard drive and typing 64LDXF or 64LE00. The uncompressed 64LDXF.EXE file includes two files: S64L.DXF (surficial geology) and H64L.DXF (Hydrography), the 64LE00.EXE file includes two files: S64L.E00 (surficial geology)
and H64L.E00 (hydrography) The hydrography was obtained from the Digital Chart of the World at 1:1 000 000, and is included to serve as general reference for the geology (digitized at 1:250 000).
For further information on the format of the data please call Andrew Moore, Geological Survey of Canada, Tel.: 613-943-0776.
Structural geology of the San Antonio Mine, Bissett, Manitoba
Authors: Lau M H S , Brisbin W C
Published: November 2010

Gold veins of the San Antonio Mine occur in sets of spaced fractures within an otherwise undeformed synvolcanic gabbro sill which is part of the Rice Lake Group. The fracture sets include extensional fractures, stockworks, and brittle and ductile shear zones. Age
relationships and conventional paleostress analysis indicate that the fracture sets do not conform to a common stress field, and furthermore that fracturing took place over several increments of deformation, during which there was rotation of principal stress axes relative to the boundaries of the
sill. In contrast, the adjacent volcanic and sedimentary rocks of the Rice Lake Group have undergone penetrative ductile deformation leading to S-L tectonites. Analysis of strain in porphyritic dacite north of the mine indicates variable proportions of flattening and stretching in the matrix, and
flattening of the phenocrysts. The rheologic model that accounts best for the observed
deformation consists of a relatively brittle central layer (gabbro) in a ductile matrix (volcanic-sedimentary rocks). The model not only accounts for observed differences in rheologic behaviour, it also indicates alternative explanations for the changes in principal stress orientation relative to
the sill during the fracturing history: (a) a fixed stress field and rotation of the sill (rigid body rotation in a ductile matrix), and (b) a changing stress field resulting from stress refraction at layer boundaries.
Release of East Kootenay, British Columbia geophysical airborne survey data
Authors:   Geological Survey of Canada
Published: November 2010

On behalf of the Government of British Columbia, the Geological Survey of Canada is announcing the publication of airborne survey results. The survey was funded by the Government of British Columbia and co-ordinated by the GSC. The electromagnetic, magnetic,
radiometric geophysical survey covers the St. Mary River Valley West half, East half and Findlay Creek areas.

The electromagnetic, magnetic, and radiometric survey results are presented as contour and colour interval maps at 1:50 000 scale, as a set of 6 maps for each area. Each set consists of the following parameters:
1) Aeromagnetic Total Field Map (contour, with EM conductors)
2) Aeromagnetic Anomaly Map (residual total field, colour interval)
3) Map of Conductors and Apparent Conductivity (contour)
4) Ternary Radioelement Map (colour interval)
5) Equivalent Thorium/Potassium Map (colour interval)
6) Potassium Map (colour interval)
Index-level database for lode gold deposits of the world
Authors: Jenkins C L , Vincent R , Robert F , Poulsen K J , Garson D
F , Blondé J A
Published: November 2010

This index-level database for lode gold deposits of the world was compiled from publicly available data on gold deposits world-wide. It contains information on lode gold deposits of all types and ages, excluding modern place deposits. It iis restricted to
deposits containing three metric tonnes or more contained gold, and to deposits that have concentrations of gold in ppm that are equal to or exceed the percentage concentration of combined base metals (i.e., [ppm Au >= %Cu + %Zn + %Pb]) .
Lake Ainslie barite-fluorite veins, Cape Breton Island, Nova Scotia
Authors: Macdonald A S
Published: November 2010

Fault black inliers, on the east side of Lake Ainslie, Cape Breton Island, are hasts to a series of barite-fluorite vein occurrences. The blacks are comprised of an Ordovician-Silurian(?) basement of psarnmitic gneisses, diorite and granite, together with
nonconformable conglomerate, sandstone, basalt, and rhyolite assigned to the Fisset Brook Formation of Middle to Late Devonian age. Clastic and carbonate rocks, of the Mississippian Horton Group and Windsor Group respectively, surround and locally cap the fault blacks. Evidence of brittle faulting
is pervasive throughout the area and many fracture surfaces are slickensided and slip-lineated. The pattern and sense of movement of rninor faulting deduced from slip linear plots of these surfaces suggests that sirnilarly oriented map-scale faults , forrning the N-S array of rhombic fault blacks,
were formed within a dextral transpressive regime of post-Visean to Westphalian age. The barite-fluorite veins occupy zones with sirnilar orientations as the faults and are characterized by a wide variety of essentially brittle deformation structures and textures that indicate that rnineralization
was essentially syn-deformational. Fluid inclusion and stable isotope data from the veins show that they were formed from saline, relatively low temperature fluids typical of formation waters derived from sedimentary basins, and the data are similar to those from other Ba and related Zn-Pb
occurrences hosted by Mississippian rocks in Nova Scotia.
Surficial sediments and placer gold on the inner shelf and coast of northeast Newfoundland
Authors: Shaw J , Forbes D L , Edwardson K
A
Published: November 2010

The inner Northeast Newfoundland Shelf and coast were mapped to determine the potential of the region to host marine placer minerals, particularly gold. Five units were mapped: unit 1, bedrock; unit 2, glacial diamicton; unit 3, glaciomarine mud; unit 4,
postglacial mud; and unit 5, postglacial sand and gravel. These units occur in five zones defined by depth, as follows: 1) deep, offshore basins contain thick deposits of glaciomarine, gravelly, sandy mud overlain by postglacial mud; 2) in shallower water, these units have been winnowed by currents;
3) above a depth of about 200 m, the seabed has been furrowed and pitted by grounded icebergs; 4) above a depth of 70 m the seabed is highly mobile; 5) the intertidal/supratidal zone is narrow and rocky, except along The Straight Shore. Relative sea level has been falling throughout postglacial time
in the west, but in the east it dropped to -20 m about 8.7 ka before rising again. Fiords contain thick deposits of glaciomarine mud, capped by thin, postglacial mud. Shallow, outer-fiord areas are heavily imprinted by iceberg furrows and pits. In zone 4, which has the highest potential to host
marine placers, extensive gravel and sand deposits occur on the wide, shallow, inner shelf between Cape Freels and Hamilton Sound, but no gold has been found in samples, likely because of a lack of gold mineralization onshore. Some gold was found at Deer Cove in Baie Verte, although the volume is
small and the grades low.
Why the Slave Province, Northwest Territories, got a little bigger
Authors: Bleeker W , Stern R , Sircombe K
Published: November 2010

We present evidence for extension of the Central Slave Cover Group into the realm of the northwestern Slave Province, thus uniting all Meso- and Paleoarchean basement of the Slave into a single cratonic nucleus formed by 2.85 Ga. The diagnostic cover sequence
overlies ca. 2.9 Ga basement in the Grenville Lake area, and from there can be mapped on both limbs of the Emile River greenstone belt, around the Scotstoun Anticline, and further west into the immediate hanging wall of the Acasta Gneiss Complex. In the Acasta area, and around the Exmouth Anticline,
quartzites, banded iron-formation, and overlying mafic volcanic rocks have been previously misidentified as Paleoproterozoic Epworth Group. Detrital-zircon data from two quartzite samples are presented to support our new interpretation that the quartzite and banded iron-formation sequence overlying
Acasta basement correlates with the Central Slave Cover Group, and that much of central Wopmay is in fact Archean.
Quartzite sequences and their relationships, Woodburn Lake group, western Churchill Province, Nunavut
Authors: Zaleski E , Pehrsson S , Duke N , Davis W J , L'Heureux R , Greiner E , Kerswill J A
Published: November 2010

Archean orthoquartzite units of the Woodburn Lake group are part of a diverse volcanic and volcanogenic sedimentary package, in contrast to the cratonic sedimentary rocks of the Paleoproterozoic Amer group. Woodburn Lake quartzite is interbedded with pyritic
quartz-pebble conglomerate, chloritoid-kyanite slate, and iron-formation, none of which have been described from the Amer group. Pyritic conglomerate presents a potential for paleoplacer and modified placer gold, which could have had a local source in underlying mineralized volcanic and sedimentary
rocks. The presence of pyritic conglomerate is consistent with deposition in the reducing atmosphere characteristic of Archean time and may prove to be a diagnostic tool for discriminating Archean from Paleoproterozoic quartzite successions in the region. Archean ultramafic rocks and gossanous
iron-formation can be traced discontinuously south of the Amer belt, considerably extending the strike-length of the suite, which is known to host gold occurrences.
Preliminary surficial geology studies and mineral exploration considerations in the Yellowknife area, Northwest Territories
Authors: Kerr D E , Wilson P
Published: November 2010

Surficial geology mapping and soil sampling in the Yellowknife area provide regional baseline data for geochemical exploration techniques and integrated environmental assessment planning. Till veneers are the most widespread surficial sediment, and have been
modified by meltwater and glaciolacustrine processes, resulting in variable textures. Glaciolacustrine sediments are common in depressions and between bedrock ridges below 280 m a.s.l. Textural similarities between glaciolacustrine sediments and till hinder the recognition of these sediments as
distinct map units. Consequently, geochemical signatures should be interpreted with caution. Eskers and glaciofluvial outwash can serve as potential aggregate resources. Dominant glacial flow directions correspond to the last southwestward ice movement. Minor variations indicate local late-glacial
flow ranging from west-northwestward to south-southwestward. Glacial dispersal patterns of pebbles in till are not immediately apparent because of bedrock constraints. However, distributions strongly reflect predominant southwestward flow, predominance of metasedimentary clasts in till, and maximum
transport distances of 150 km.
Ancient Pacific Margin NATMAP Project, year one
Authors: Thompson R I , Nelson J L , Paradis S , Roots C F , Murphy D C , Gordey S P , Jackson L E
Published: November 2010

The Ancient Pacific Margin NATMAP Project, developed in response to demand from the mineral industry, is a comprehensive analysis of the Cordillera-long belt of complexly deformed and metamorphosed rocks of pericratonic character known primarily as the
Yukon-Tanana and Kootenay terranes.
During the project's first operational year, geological mapping began in the Wolf Lake-Jennings River area on the British Columbia-Yukon Territory border and continued in the Vernon area of southern British Columbia. Detailed metallogenic studies were undertaken in both the Kootenay and Yukon Tanana
terranes. Bedrock and surficial geology reconnaissance studies in the Stewart River area provide the basis for future work.
The various components of the project will address the following: correlation between terranes; paleogeographic settings with emphasis on mineral-deposit modelling; timing and nature of tectonic events; terrane mobility relative to the North American craton; the nature of tectonic
boundaries.
Late Cenozoic geology, Ancient Pacific Margin NATMAP Project, report 2: survey of placer-gravel lithology and exploration of glacial limits along the Yukon and Stewart rivers, Yukon Territory
Authors: Jackson L E , Huscroft C A
Published: November 2010

The lithology of placer gravels and indicators of glaciation were investigated in drainage basins near Mount Stewart, Thistle Mountain, and Selwyn Dome, west-central Yukon Territory. The composition of placer gravel indicates that mafic and felsic volcanic and
subvolcanic rocks, unrecognized on existing bedrock geology maps, outcrop or suboutcrop in the area. Similar rocks host precious and base-metal deposits in the nearby Dawson Range. Ultramafic rocks are more extensive in the study area than previously thought. The presence of large erratic boulders
suggests that the area may have been glaciated during the early Pleistocene.
Revision mapping of the Yukon-Tanana and equivalent terranes in northern British Columbia and southern Yukon Territory between 131° and 132°W
Authors: Roots C F , de Keijzer M , Nelson J L , Mihalynuk M G
Published: November 2010

The northern half of the Jennings River (104-O) and southern half of the Wolf Lake (105 B) map areas include multiply deformed and metamorphosed rocks of the eastern Big Salmon Complex (Yukon Tanana Terrane) and a succession of mostly Paleozoic rock assemblages
whose terrane affinity is in question.
Hazel Ridge, on the west side of the area, reveals folded mafic metavolcanic rock, piedmontite chert, and marble in a series of overturned isoclinal folds. This consistent stratigraphic succession is overlain by metagreywacke on a possible unconformity.
In the northeast, siliceous gritty and mafic metavolcanic rocks of the Dorsey assemblage are intruded by orthogneiss. These are overlain on a probable detachment fault by thin mafic volcanic rock and limestone ((?)Klinkit assemblage) and by dark phyllitic rocks and quartzite (Swift River
assemblage).
Both Hazel Ridge and the Dorsey assemblage contain several quartz±feldspar-phyric siliceous layers that suggest volcanogenic massive-sulphide potential.
Intertidal molluscs from high-stand deposits on northwest Graham Island, British Columbia
Authors: Hetherington R
Published: November 2010

Fieldwork during June 1999 on the northwest corner of Graham Island, British Columbia involved locating, sampling, and assessing previously studied high-stand deposits to gain insights into environmental and sea-level change. Shell material was obtained from
three separate high-stand localities. Dating of these samples will provide a more complete record of high-stand elevations across the Queen Charlotte Islands thereby providing a more comprehensive data set with which to model isostatic sea-level response between 15 000 and 8500 14C years BP on the
British Columbia continental margin. Significant evidence was obtained from intertidal shell material at the Haines Creek site to suggest abundant edible molluscs at this location at approximately 8500 14C years BP during sea-level high stand. Assuming this site fits into Queen Charlotte Island
high-stand deposits, it can be inferred that edible molluscan biomass was available for a migrating people at this time.
Stratigraphy and structures within the Lower to Middle Jurassic Hazelton Group, Takysie Lake and Marilla map areas, central British Columbia
Authors: Pint C D , Anderson R G , Mahoney J B
Published: November 2010

Deformed Hazelton Group rocks in southern Takysie Lake (NTS 93 F/13) and northern Marilla (NTS 93 F/12) map areas consist of maroon to reddish-brown polymictic cobble conglomerate; red, pebbly mudstone; and feldspathic lithic wacke. The strata form the upper
plate of a northwest-trending, southwest-dipping reverse fault. The rocks commonly dip moderately to the north, are locally folded about a northwest-trending fold axis, and are penetratively deformed. A closely spaced S1 cleavage dipping moderately southeast and a less well developed S2 cleavage
dipping steeply west represent the oldest recognized structures in the region.
The lower plate consists of Jurassic Bowser Lake or Cretaceous Skeena groups chert-rich greywacke and polymictic chert- and felsic volcanic-rich conglomerate exhibiting an east-trending, moderately dipping cleavage.
Hanging wall and footwall rocks are intruded by the undeformed (?)Late Cretaceous Skins Lake pluton, constraining the timing of deformation to post-Jurassic and pre-(?)Late Cretaceous.
Stratigraphic linkage of carbonate-rich units across east-central Vernon map area, British Columbia: are Kingfisher (Colby) and Big Ledge zinc-lead occurrences part of the same regional marker succession?
Authors: Thompson R I , Daughtry K L
Published: November 2010

A calcareous quartzite and calc-silicate marker succession can be mapped across east-central Vernon map area (82 L/7). Both the lithologies present and the trend of the succession suggest it correlates with host strata to the Kingfisher (Colby) and Big Ledge
base-metal occurrences. This model expands potential exploration targets by defining a large region of potential host rocks that appear to extend from the eastern shores of Upper Arrow Lake west to the town of Chase, a distance of more than 100 km.
Preliminary field, petrographic, and geochemical analysis of possible subglacial, dacitic volcanism at the Watts Point volcanic centre, southwestern British Columbia
Authors: Bye A , Edwards B R , Hickson C J
Published: November 2010

The Watts Point volcanic centre, located 40 km north of Vancouver, British Columbia, along the north shore of Howe Sound, is the southernmost volcanic centre in the Garibaldi segment of the Cascades volcanic arc. The Watts Point volcanic centre comprises
approximately 0.02 km3 of sparsely porphyritic, highly jointed hornblende and pyroxene dacite lava and lava breccia. Lavas from the centre overlie the mid-Cretaceous Coast plutonic complex and are overlain locally by sediments and glacial till. The rocks are characterized by columnar joints, ranging
in diameter from 5 cm to 40 cm and exhibiting locally radiating patterns. The distinctive, radial columnar joint patterns, the glassy to fine-grained groundmass, the stratigraphic relationships to overlying glacial till, as well as previously published geochronometric constraints support the
formation of the Watts Point volcanic centre in a subglacial to englacial environment.
Implications of a preliminary fluid-inclusion study of giant quartz veins of the southern Great Bear magmatic zone, Northwest Territories
Authors: Gandhi S S , Carrière J J , Prasad N
Published: November 2010

Giant quartz veins occur along brittle faults in the ca. 1865 Ma Great Bear magmatic zone. They comprise two or more generations of subparallel veins and stockworks in zones as much as 100 m wide and 10 km long. They contain local concentrations of
hematite/specularite, pyrite, copper sulphides, and pitchblende.
Fluid inclusions in the veins at two uranium showings, Crowfoot and Ted, were examined. The homogenization temperatures (Th) range from 96 to 217°C for Type I (2-phase liquid-rich) inclusions at Crowfoot, and from 122 to 169°C for Types I and III (3-phase liquid-rich) inclusions at Ted.
Type II (2-phase vapour-rich) inclusions yield grossly different Th (228 445°C range), which do not represent true Th, but do suggest fluid mixing, as does the wide salinity range from 0.18 to 31.6 weight per cent NaCl equivalent. These data are consistent with the formation of the veins in a
tensional epizonal environment.
The nature of the Wathaman Batholith and its relationship to the Archean Peter Lake Domain along the Reindeer Lake transect, Saskatchewan
Authors: Corrigan D , MacHattie T G , Chakungal J
Published: November 2010

The Wathaman Batholith in Saskatchewan is a stitching pluton emplaced at the boundary between accreted volcano-sedimentary rocks of the La Ronge Domain and the Archean Hearne Province margin. Along the northern shore of Reindeer Lake, megacrystic granitoid rocks
of the Wathaman suite intrude and host xenoliths of Archean gneiss of the Peter Lake Domain. The Swan River complex, which intrudes Archean gneiss of Peter Lake Domain, contains mafic-ultramafic sills including layered olivine gabbro and diorite. It locally mingles with megacrystic monzodiorite of
the Wathaman Batholith, suggesting a co-genetic relationship. Along its southern margin, the batholith intrudes metasedimentary rocks of the Park Island assemblage, interpreted as the remnant of a foreland basin. The Swan River complex, as well as voluminous granitic to granodioritic plutons
occurring in the La Ronge Domain, greatly increase the amount and compositional diversity of plutonic rocks believed to form part of the Wathaman suite.
Tectonostratigraphy, structure, and geochemistry of the Mesoarchean Wallace Lake greenstone belt, southeastern Manitoba
Authors: Sasseville C , Tomlinson K Y
Published: November 2010

In the Wallace Lake greenstone belt, the Conley and Overload Bay formations make up the Wallace Lake assemblage (<3.0 Ga, >2.92 Ga), and comprise a platformal sedimentary sequence and an associated mafic-ultramafic volcanic sequence with
iron-formation. The Big Island composite assemblage contains three superposed tectonic slivers comprising mafic-ultramafic rocks, gabbro, and pillow lavas. The Siderock Lake assemblage comprises volcanogenic polymictic conglomerates. Geochemically, mafic-ultramafic rocks low in the stratigraphy
appear to be contaminated, whereas upper units do not. The Wallace Lake, Big Island composite, and Siderock Lake assemblages are separated by layer-parallel D1 high-strain zones which are folded by northwest- and west-trending close and reclined D2 folds. Dextral shearing and east-northeast-trending
folds represent a D3 event, and D4 produced S-shaped kink bands within older high-strain zones.
Granite-greenstone relationships at the southeastern Sturgeon belt margin in the Brightsand forest area, Ontario
Authors: Brown J L , Percival J A , White D , Tomlinson K Y , McNicoll V
Published: November 2010

At the southeastern margin of the Sturgeon Lake-Savant Lake greenstone belt, screens of amphibolite-facies supracrustal rocks, separated by plutonic and gneiss units, mark the interface between volcanic rocks of the western Wabigoon and granitoid rocks-gneiss of
the central Wabigoon Subprovince. Complex tonalite gneiss records D1 and D2 events not present in supracrustal and other plutonic units which sustained regional D3 and D4 deformation. The complex gneiss may represent depositional basement to supracrustal rocks correlative with the continental margin
sequence of the Sturgeon-Savant belt. Alternatively, the fold geometry of this unit can be explained by large-scale fold interference. The steeply north-dipping Hilltop Creek and Robert Lake faults, which appear on LITHOPROBE seismic line 1d as steep truncations, separate the region into
metamorphically and lithologically distinct structural panels. The faults are spatially and probably mechanically related to the sinistral Wapikamaiski Lake and Brightsand River shear zones.
Samuels Lake intrusion: a Late Archean Cu-Ni-PGE-bearing mafic-ultramafic complex in the western Quetico Subprovince, northwestern Ontario
Authors: Pettigrew N T , Hattori K H , Percival J A
Published: November 2010

The Samuels Lake intrusion, located in the central western Quetico Subprovince, is similar to an array of mafic-ultramafic intrusions along the northern boundary of the subprovince. These intrusions are referred to in the literature as the Quetico intrusions, and
are accompanied by Cu-Ni-PGE mineralization and characteristically contain clinopyroxenite and minor pegmatitic phases. The Samuels Lake intrusion is elliptical in form and displays concentric zoning with a wehrlite core surrounded by a hornblendite zone and pyroxenite exterior. The PGE
mineralization is associated with the occurrence of sulphides, especially chalcopyrite, in altered pyroxenite and wehrlite. High values of PGE appear related to high-temperature, late-magmatic, hydrothermal alteration.
Surficial geology, Contwoyto Lake, Northwest Territories-Nunavut
Authors: Kerr D E , Ward B C , Dredge L A
Published: November 2010

Ongoing geological exploration and related infrastructure development in central and northern Slave Geological Province have resulted in the need for a wide range of baseline information. In response, Terrain Sciences Division initiated regional surficial
geology mapping through the Slave Province National Mapping Program (NATMAP) to provide fundamental regional data on surficial materials and till geochemistry. In 1994, Terrain Sciences Division undertook mapping of the south half of the Contwoyto Lake map area (NTS 76E). As an extension to Slave
NATMAP, surficial geology mapping continued in 1996 in the north half of the Contwoyto Lake map area, east and north of recently mapped 1:250 000 sheet (Kerr et al., 1995, 1997a). The project involved helicopter-assisted ground work including terrain mapping, till sampling, pebble provenance
studies, measurement of ice flow indicators, and recording permafrost features. Field traverses and airphoto interpretation provided information on the nature and distribution of surficial materials shown on the map. Till samples (1 Kg) were collected from hand-dug pits at 219 sites for textural
analysis and trace element geochemistry; 52 bulk till samples (10 Kg) were collected for regional kimberlite indicator mineral analysis and gold grain analysis; pebbles (2 to 6 cm diameter) were collected from the till sample pits to assess glacial transport distances and ice flow patterns.
Surficial geology was plotted on 1:60 000 scale airphotos and recompiled at 1:125 000 on a topographic base. This map supersedes previous surficial geology maps of this area (Hart et al., 1989; Ward et al., 1995; Kerr et al., 1997b). Ward et al. (1996a, b), Kerr et al. (1998, 1999) present the
results of regional till geochemistry and kimberlite indicator mineral analyses. The regional glacial geology was first presented by Blake (1963). Subsequent bedrock mapping projects included brief comments regarding glacial geology (Bostock, 1966, 1980; Tremblay, 1966, 1967, 1976), and associated
reconnaissance till geochemistry in the Lupin area is summarized in Coker et al. (1992).
Sand dykes in late Pleistocene deltaic sediments, Fraser Lowland, British Columbia
Authors: Tribe S , Grimm K
Published: November 2010

Sand dykes and deformation structures occur in late Pleistocene deltaic sediments of the Fort Langley Formation near Maple Ridge, British Columbia. One 5 m wide, vertical-sided sand dyke intruded stratified sands and gravels and an overlying 4 m thick layer of
fossiliferous clay. The source of the injected material is a sand stratum located at 8 m depth. A smaller, 35 cm wide sand dyke intruded 70 cm of horizontally stratified sands to vent onto a subaqueous depositional surface on a sandy delta front. Normal faulting and tilting and folding in strata 20
m away from the dykes suggest that lateral spreading may have accompanied dyke emplacement. Possible causes for liquefaction at the study site are nonseismic landslides or an earthquake that occurred 12 500-11 500 14C years ago.
Thicknesses of adsorbed water layers on sediments from the JAPEX/JNOC/GSC Mallik 2L-38 gas hydrate research well, Northwest Territories
Authors: Katsube T J , Scromeda N , Connell S
Published: November 2010

Thicknesses and number of water molecular layers adsorbed on pore surfaces have been determined for 11 sedimentary rocks from 850-950 m depths in the Mackenzie Delta (Northwest Territories), using vacuum drying at temperatures of 4-100°C. The purpose was to
determine adsorbed water characteristics of unconsolidated to moderately consolidated sediments, as part of a fluid expulsion and entrapment study of compacting sediments. Whereas free water is evacuated under vacuum, about five adsorbed water layers are known to exist on clay surfaces that can not
be evacuated under those conditions at less than 25°C.
These results indicate that there are generally 0-3 adsorbed water layers for naturally and vacuum dried samples at 25°C; and larger numbers, 7-270 and 1-70, for samples naturally dried at 4°C and vacuum dried at 25°C, respectively. In addition, unlike previous cases most adsorbed
water is evacuated at 50°C, for these samples.
Apparent formation-factor and porosity variation with pressure for Cretaceous shale of the Western Canada Sedimentary Basin, southern Alberta
Authors: Katsube T J , Issler D R , Loman J , Cox W C
Published: November 2010

Ten shale samples from several Cretaceous stratigraphic units (Colorado Group) of the Western Canada Sedimentary Basin were obtained for determination of effective porosity (øE) and apparent formation-factor (Fa) as a function of confining pressure (Pc). These
samples are part of a study to investigate the possibility that shale petrophysical property changes, in response to unloading by erosion of overburden, have contributed to the development of subhydrostatic pressures within the Cretaceous succession of the basin.

Results indicate that øE (0.9-13%) and Fa values (200-3800) at different confining pressures (Pc: 0-65 MPa) show trends that are typical of shale, with øE decreasing and Fa increasing with increased Pc; however, one sample from a siderite concretion unexpectedly displays a reverse Fa-Pc
relationship. There are subtle indications that increased pore compressibility may be associated with abnormally pressured shale. These data form the basis for detailed analysis and interpretation in forthcoming studies.
Petrophysical properties of mineralized and nonmineralized rocks from Giant and Con mine areas, Northwest Territories
Authors: Scromeda N , Connell S , Katsube T J
Published: November 2010

Petrophysical measurements, including electrical resistivity, effective porosity, and bulk density, have been performed on ten mineralized and nonmineralized rock samples from the Giant mine and Con mine areas (Northwest Territories). The purpose was to determine
the petrophysical characteristics of these rocks and provide information required to determine their electrical conductivity mechanism and to aid interpretation of down-hole, ground, and airborne electromagnetic survey data.

Results indicate that bulk densities (dB) are in the range of 2.86-3.13 g/mL. Effective porosities (øE) range from 0.40% to 3.03%, with the øE values for samples from the Con mine area being generally smaller (0.40-1.16%) than those from the Giant mine area (0.42-3.13%). Bulk
electrical resistivities (rr) are in the range of 37-2.4 x 10exp4 ohm·m, for these samples. The moderately to strongly foliated texture of these samples result in electrical resistivity anisotropy values of 2:1 to 46:1.
Shale permeability and pore-structure evolution characteristics
Authors: Katsube T J
Published: November 2010

Evolution characteristics of shale pore-structure components (e.g. storage and connecting pores) with compaction have been determined, for the first time, using several types of shale and mudstone samples in order to generate data for use in analyzing
overpressure detection problems. Discrepancies between overpressure responses from different geophysical logs have been reported, suggesting that some logs may respond only to specific components.
Results indicate that, although some theoretical problems still exist, evolution characteristics can be successfully determined, separately, for shale storage and connecting pores. They indicate that storage porosities are generally constant but that connecting porosities always decrease with
increased pressure, implying that connecting pores are more flexible and susceptible to pore-pressure changes. This may explain some of the reasons for log response discrepancies to overpressure.
Rapid extraction of Sr and Pb by ion-specific chromatography for thermal ionization mass spectrometry: an update; Radiogenic age and isotopic studies: Report 13
Authors: Thériault R J , Davis W J
Published: November 2010

A modification to a laboratory procedure is reported for sequential separation of Sr and Pb using Sr-Resin. The modification entails adding 125 µL of inert resin substrate to the bottom of a 125 µL column of Sr-Resin. The inert resin substrate adsorbs
crown-6 ether removed from the column during extraction of Pb in 6 N HCl. The absence of the crown-6 ether increases the solubility of the 6 N HCl eluant, and results in a more quantitative recovery of the Pb concentrate and improved analysis by thermal ionization mass
spectrometry.
Late Grenvillian granite plutons in the Central metasedimentary belt, Grenville Province, southeastern Ontario; Radiogenic age and isotopic studies: Report 13
Authors: Davidson A , van Breemen O
Published: November 2010

Two leucogranite plutons in the Sharbot Lake domain, dated at 1070 and 1066 Ma, are altogether younger than other plutons already dated in the same area; both are coeval with the 1065 Ma Guénette granite in the northern Central metasedimentary belt in
Quebec. These two granite plutons, among others, were previously assigned to an alaskitic suite dated 1250-1240 Ma. A review of granite pluton ages in the Central metasedimentary belt shows that lithological similarity alone cannot be used for assigning such rocks to specific age groups. In
addition, the two dated plutons are chemically distinct from each other and also from syenitic plutons of the Skootamatta suite (1090-1075 Ma), in the same general region. Geochemically dissimilar plutons thus need not have different ages. However, a consideration of characteristics such as
relationship to regional structure allows the prediction that certain other granite plutons may belong to the young age group.
Evidence for magmatism of Elzevirian age in the Sharbot Lake domain, Central metasedimentary belt, Grenville Province, Ontario; Radiogenic age and isotopic studies: Report 13
Authors: Praamsma T , Wodicka N , Easton R
M
Published: November 2010

Uranium-lead data from a granodioritic phase of the Pakenham intrusion impose important new constraints on the tectonic evolution of the Sharbot Lake domain, Central metasedimentary belt. The granodiorite yields a crystallization age of 1263 +4/-2 Ma, which
expands the known age range for magmatism of Elzevirian age in this domain. The similarity in age and geochemical data of the Pakenham intrusion with 1280-1250 Ma calc-alkaline plutonic rocks in domains to the west suggests an early phase of arc building in the Sharbot Lake domain. Titanite from the
granodiorite gives an age of 1113 ± 4 Ma. Together with petrographic observations, this age suggests that titanite formed in response to greenschist-facies overprinting metamorphism and (or) fluid infiltration.
New U-Pb ages from the Eastern Coast Belt, southern British Columbia; Radiogenic age and isotopic studies: Report 13
Authors: Woodsworth G J , McNicoll V J , Friedman R M , Rusmore M E
Published: November 2010

Six new U-Pb ages for southern Coast Belt plutons are presented. A 66.6 ± 1.1 Ma titanite age from the Machmell pluton within the southern Coast shear zone provides a maximum age for motion at that location. In the eastern Waddington thrust belt, the
Homathko Peak tonalite, a fault slice within the belt, is 153.4 ± 0.3 Ma; the postkinematic Tiedemann pluton is early Tertiary.

In the Mount Raleigh area, a monazite date of 85.0 ± 0.5 Ma provides a minimum age for crystallization and a maximum age for amphibolite-facies metamorphism of the Sisyphus Creek leucogranite. The synkinematic Mount Gilbert pluton crystallized at 83.6 ± 0.2 Ma, indicating that
metamorphism and thrusting in the Mount Raleigh pendant occurred at that time. The postkinematic Bishop River pluton intruded at 72.2 ± 0.4 Ma.

Similarities between the Mount Raleigh and eastern Waddington areas indicate that they form part of an extensive Late Cretaceous fold-and-thrust belt in the eastern Coast Belt.
Geology, Victory and Mackenzie lakes, Nunavut
Authors: Aspler L B , Armitage A E , Hauseux M , Surmacz S , Ryan J
J
Published: November 2010

New 1:50,000-scale mapping in the Mackenzie-Victory lakes area (Figure 1) indicates that: 1) the belt of siliciclastic rocks extending for ca. 40 km from southwest of Mackenzie Lake to northwestern Victory Lake and previously mapped as Mackenzie Lake
metasediments (Bell, 1968; 1971; Davidson, 1970; Hanmer et al., 1998), correlate with the lower part of the Hurwitz Group; 2) Archean volcanogenic strata (Kaminak Group) which host base metal massive sulphide prospects are unconformably beneath the Hurwitz Group; 3) both basement and cover
experienced penetrative deformation (including tight to isoclinal folding) and upper greenschist facies metamorphism before ca. 1.83 Ga (presumed age of undeformed and unmetamorphosed lamprophyre dykes); and 4) structures reflect intense Paleoproterozic deformation, and the effects of Archean strain
are not obvious.
Geology, Sealhole and Fitzpatrick lakes area, Nunavut
Authors: Aspler L B
Published: November 2010

This map extends 1:50 000 scale coverage of Archean and Paleoproterozoic rocks southward from Hawk Hill Lake (Aspler and Bursey, 1990) to the Sealhole and Fitzpatrick lakes area (Fig.1), updating reconnaissance mapping by Eade (1973; 1974). Three major
unconformity bounded sequences are exposed: the Henik Group (Neoarchean), the Montgomery Group (age uncertain), and the Hurwitz Group (Paleoproterozoic).
Climate and ground thermal data, 1988-1994: Hot Weather Creek area, Fosheim Peninsula, Nunavut
Authors: Alt B T , Labine C L , Desrochers D T , Young K L , Garneau M
Published: November 2010

This CD contains climate data and metadata (documentation) for the Hot Weather Creek autostation, climate data from other data loggers in the area, frost depth data from the Hot Weather Creek area, the results of modelling the active layer thickness for the area
and climate data from the Sawtooth Range climate stations. These data are to accompany the GSC Bulletin 529 and not only provide the basis for the results presented in this bulletin but also the database from which to carry out many of the recommendations for future work resulting from the studies
presented there. The Hot Weather Creek climate data set includes the quality controlled logger data, extensive documentation and value-added processed data. It is valuable not only as data for future studies but also as an model for the archiving of high Arctic field camp autostation data. All the
data are presented in user friendly formats and are accompanied by readme files and location maps.
Late cenozoic geology, Ancient Pacific Margin NATMAP Project, report 3: a re-evaluation of glacial limits in the Stewart River basin of Stewart River map area, Yukon Territory
Authors: Jackson L E , Shimamura K , Huscroft C A
Published: November 2010

Investigation of stream-gravel lithology, distribution of erratics and high terraces, and natural exposures of terrace gravels along Stewart River have generally corroborated the all-time limits of glaciation mapped by H.S. Bostock in the Stewart River basin of
the Stewart River map area. Stream gravels beyond these limits completely lack lithologies associated with the Selwyn Basin. Placer deposits beyond these glacial limits formed from fluvial con- centration of gold sources occurring in those basins. The upper reaches of streams spanning glacial limits
may contain undisturbed placers, whereas lower reaches may contain placers formed following glaciation, and buried placers. Bostock's unpublished notes have proven to be a valuable aid in mapping the surficial geology of the area.