bluuebunny/crossref_metadata_2025 huggingface dataset:
Influence of starvation on the critical swimming behaviour of the Senegalese sole (Solea senegalensis) and its relationship with RNA/DNA ratios during ontogeny
Authors: Faria Ana M. , Muha Teja , Morote Elvira , Chícharo M. Alexandra
Published: November 2010

Food availability can affect larval survival directly through starvation and indirectly through the effects on larval growth rate, swimming performance and vulnerability to predators. In the present study we evaluate the effects of starvation on growth, nutritional condition and swimming behaviour of the Senegalese sole (Solea senegalensis) throughout ontogeny (8 to 14 days after hatching). Biochemical analysis (RNA/DNA ratios) and behavioural experiments (critical swimming speed, Ucrit) were conducted on larvae reared under 3 feeding treatments: fed ad libitum, deprived of food for 48 hours and deprived of food for 96 hours. Growth was significantly affected by feeding treatment, while only slight decreases in RNA/DNA ratio and swimming performance were registered. Late stage larvae of the three feeding treatments had slower critical speeds than the pre-flexion and flexion stages, which is probably related to the benthic lifestyle acquired by the species at the end of the larval period. These physiological and behavioural changes are in accordance with previous results, which show that flatfish larvae are more resistant to starvation than pelagic species and that they become less active later in development.
Dendritic Cells Distinguish Individual Chemokine Signals through CCR7 and CXCR4
Authors: Ricart Brendon G. , John Beena , Lee Dooyoung , Hunter Christopher A. , Hammer Daniel A.
Published: November 2010

Dendritic cells (DCs) respond to chemotactic signals to migrate from sites of infection to secondary lymphoid organs where they initiate the adaptive immune response. The key chemokines directing their migration are CCL19, CCL21, and CXCL12, but how signals from these chemokines are integrated by migrating cells is poorly understood. Using a microfluidic device, we presented single and competing chemokine gradients to murine bone-marrow derived DCs in a controlled, time-invariant microenvironment. Experiments performed with counter-gradients revealed that CCL19 is 10–100-fold more potent than CCL21 or CXCL12. Interestingly, when the chemoattractive potencies of opposing gradients are matched, cells home to a central region in which the signals from multiple chemokines are balanced; in this region, cells are motile but display no net displacement. Actin and myosin inhibitors affected the speed of crawling but not directed motion, whereas pertussis toxin inhibited directed motion but not speed. These results provide fundamental insight into the processes that DCs use to migrate toward and position themselves within secondary lymphoid organs.
An Unusual Presentation of Liver Failure in a Patient with Primary Gastrointestinal Hodgkin's Lymphoma
Authors: Rocque Gabrielle B. , Malik Jeffrey T. , Yang David T. , Chang Julie E.
Published: November 2010

Introduction. Hodgkin's lymphoma (HL) presenting either with primary bowel involvement or with cholestasis is unusual. The combination of primary gastrointestinal HL presenting with cholestasis and ductopenia has not been previously described. Case Report. We present a case of primary gastrointestinal HL with evidence of liver involvement, but also with prominent ductopenia on liver biopsy and associated intrahepatic cholestasis. A 50-year-old man with a history of Crohn's disease presented with a bowel obstruction, for which he underwent a small bowel resection. Histology revealed HL. His course was complicated by cholestatic liver failure. A subsequent liver biopsy revealed both focal involvement by lymphoma and ductopenia, resembling vanishing bile duct syndrome (VBDS). He was treated with chemotherapy with improvement in his cholestasis, but he eventually succumbed due to further complications of his disease and treatment toxicities. Conclusion. This case of primary gastrointestinal HL associated with ductopenia does not meet classic criteria for VBDS, but the clinical presentation and pathology are suggestive of a VBDS-like paraneoplastic process. Therapies for HL in the setting of cholestatic liver failure require special consideration, but some reports of durable remissions and recovery of liver function have been reported.
The bursting of a snow dam, Tingmisut Lake, Melville Island, Northwest Territories
Authors: Heginbottom J A
Published: November 2010

In July 1979 snowmelt from the hills surrounding Tingmisut Lake, Melville Island, accumulated in the lake basin, trapped behind a dense snowdrift which blocked the valley of the outlet stream. The water level rose until it overtopped this snow dam, and the
flowing water cut down rapidly through the dam, resulting in a major flood event downstream. An estimated 1.6 x 106 m3 of water drained f rom the lake in 36 hours. The implications of such events are discussed.
Stratigraphic subdivision of the Roche Point, Hoyle Bay and Barrow formations [Schei Point group], western Sverdrup Basin, Arctic Islands
Authors: Embry A F
Published: November 2010

In the western Sverdrup Basin the Roche Point, Hoyle Bay and Barrow formations (Schei Point Croup, Middle-Upper Triassic) have been subdivided into formal members on the basis of subsurface stratigraphic analysis. Four members are recognized in the Roche Point
Formation, and in ascending order are named Eldridge Bay (sandstone), Cape Caledonia (shale-siltstone), Chads Point (sandstone) and Gore Point (limestone, sandstone). The source area for the clastics of the lower three members lay to the south whereas the source for the Gore Point was to the north.
The Hoyle Bay Formation is divided into two members: Eden Bay (shale, siltstone, limestone) and Cape Richards (shale, siltstone). The source area for these units was to the north. One member, the Jenness (sandstone, siltstone and shale) is recognized within the Barrow Formation, and its source area
lay to the northwest.
Paleontological evidence relating to distribution and the paleoenvironments of the Eureka Sound and Beaufort formations, northeastern Banks Island, Arctic Canada
Authors: Dawson M R , West R M , Hickey L J
Published: November 2010

Recent discoveries of vertebrate, invertebrate and plant fossils near Nangmagvik Lake, northeastern Banks Island, N.W.T., confirm the presence of marine strata in the local Paleogene Eureka Sound Formation and indicate a wider distribution of the Neogene Beaufort
Formation than previously believed.
Reconnaissance study of proglacial Stewart Lakes, Baffin Island, District of Franklin
Authors: Gilbert R , Syvitski J P M , Taylor R B
Published: November 2010

Stewart Lakes are dammed by neoglacial moraines in a through-valley between Gibbs and Sam Ford fiords in northeastern Baffin Island. Maximum water depth on the basis of spot soundings is 108 m. Glaciers are retreating at rates between 19 and 34 m/a, and the lake
level has lowered from 69 m above sea level to 55 m as a result of ice retreat and downcutting of the moraines. On 13 September 1983, suspended sediment concentrations in Stewart Lakes varied from 66 to 109 mg/L. In Refuge Harbour (Gibbs Fiord) the concentration in overflowing fresh water was 135
mg/L. These values are significantly higher than those measured in most other ice-proximal lakes and fiords.
Preliminary results of palynological studies of the permian and lowermost triassic sediments, Sabine Peninsula, Melville Island, Canadian Arctic Archipelago
Authors: Utting J
Published: November 2010

Well preserved palynomorphs have been found in samples from the uppermost part of the Canyon Fiord Formation (Lower Permian?); the Belcher Channel (Lower Permian), Sabine Bay (Lower Permian), and Assistance (Lower Permian) formations; "Unit A" (Lower or Upper
Permian); and the Trold Fiord (Upper Permian) and lower Bjarne (Lower Triassic) formations. Pollen and spores occur in all formations, and acritarchs in all except the Canyon Fiord and Bjarne. In general terms, the Permian assemblages contain abundant, striate disaccate pollen (Protohaploxypinus
spp.), polyplicate pollen (Vittatina spp. and Weylandites spp.), and trilete spores. Monosaccate pollen (Cordaitina spp.) occurs occasionally. The Lower Triassic assemblages contain abundant striate disaccate pollen (Protohaploxypinus spp. and Taeniaesporites spp.), non-striate disaccate pollen
(Falcisporites sp. and Klausipollenites spp.), colpate pollen (Gnetaceaepollenites spp.), and trilete spores (Kraeuselisporites spp. and Lundbladispora spp.). Present also is the cyst-like microfossil Tympanicysta stoschiana. The assemblages are unlike those of Gondwana and Cathaysia. They appear ta
be more similar ta those described from the northeast European part of Russia than those of Western Europe. The Thermal Alteration indices of the palynomorphs are low (2- ta 2+ on a five point scale), suggesting suitable conditions for the generation of liquid hydrocarbons.
Pisces 4 Research Submersible Finds Oil On Baffin Shelf
Authors: Grant A C , Levy E M , Lee K , Moffat J
D
Published: November 2010

Evidence of natural seepage of petroleum from the seabed off the coast of Baffin Island was first reported in 1976. Chemical analyses of samples from the oil slick on the sea surface, and geological and geophysical studies of the Baffin Shelf supported this
interpretation. Liquid oil recovered from the sea floor off Scott Inlet in October, 1985, by the research submersible Pisces IV, confirms the existence of natural oil seeps, and indicates that source rocks for petroleum are present in the Baffin Bay region.
Investigations of Paleozoic Geology, northern Axel Heiberg and northwestern Ellesmere Islands
Authors: Trettin H P
Published: November 2010

The Rens Fiord C omplex of Axel Heiberg I stand is divided into: 1. interstratified basalt and carbonate of Early Cambrian or Hadrynian age; 2. dolostone and minor limestone of probable Early Cambrian age (facies equivalent of Ella Bay Formation?); 3. the Grant
Land Formation (Lower Cambrian); and 4. the Hazen Formation (Lower Cambrian to Lower Silurian). The Svartevaeg Formation probably is a thrust­faulted facies equivalent of the Silurian Lands Lokk Formation. The basal Carboniferous succession includes a thin volcanic unit. Steeply inclined to
subhorizontal thrusts in northern Axel Heiberg I stand, directed bath to the northeast and the southwest, are attributed to deformations of Late Silurian - Early Devonian, and post-Early Devonian to pre-Visean ages. On northwestern Ellesmere Island, the sandy and argillaceous member C of the Lands
Lokk Formation represents a submarine fan facies that ranges in age from latest Llandovery or Wenlock to Ludlow. The chert-rich sediments are comparable to formations of northeastern Greenland and may have been affected by sinistral strike slip.
Preliminary notes on Lower paleozoic geology, Foxe basin, northeastern Melville Peninsula, and parts of northern and central Baffin Island
Authors: Trettin H P , Norford B S , Barnes C S , Boucot A J , Copeland M J
Published: November 2010

This is a preliminary compilation of data obtained during field work in 1966. The report contains; (1) geological summaries both on the regional and local scale; (2) relevant field notes; (3) fossil identifications by B.S. Norford, C.S. Barnes, A.J.Boucot, and
M.J. Copeland; and (4) prelirninary descriptions of hand specimens, polished sections, and thin sections. The location of the 64 localities visited is expressed in terms of the NTS grid and of UTM coordinates.
Biostratigraphic determinations from the subsurface of the districts of Mackenzie and Franklin and the Yukon Territory
Authors: Andrechuk J W
Published: November 2010

Identifitcations and age determinations are presented for fossils from 20 wells and one borehole in the Districts of Franklin and Mackenzie and in the Yukon Territory. Ages range from Ordovician to Cenozoic and are based on identifications of spores, pollen,
dinoflagellates, acritarchs, conodonts, foraminifers, ostracodes, corals, brachiopods, stromatoporoids, pelecypods and dacryoconarids.
Foraminiferal-ostracod late jurassic biozonation of the Scotian shelf
Authors: Ascoli P
Published: November 2010

The writer's 1977 foraminiferal and ostracod biozonation of the Scotian Shelf has been updated and refined for the Late Jurassic interval and extended to the East Newfoundland Bason of the Grand Banks. The use of four categories of microfossils (planktonic
Foraminifera, calcareous benthonic Foraminifera, arenaceous benthonic Foraminifera and Ostracoda) makes possible the correlaation of coeval deposits of widely differend facies (littoral-inner neritic, outer neritic and bathyal). Planktonic Foraminifera provide one assemblage zone, of
Callovian-Oxfordian age; calcareous benthonic Foraminifera three zones, of Oxfordian, Kimmeridgian and Tithonian age; arenaceous benthonic Foraminifera two zones, of Oxfordian-Early Kimmeridgian and Late Kimmeridgian-Tithonian age, and Ostracoda three zones, of Oxfordian, Kimmeridgian and Tithonian
age. The combined use of these different zones has effected food stratigraphic correlation between 19 wells of the Scotian Shelf and one well of the East Newfoundland Basin (Mobil-Gul Bonnition H-32), even when dealing with poor foraminiferal and ostracod assemblages.
Calpionellid assemblages have been studied in detail in Shell Mohican I-100 (Scotian Shelf) and in Bonnition H-32 and have allowed spearation of the Late Tithonian from the Early Berriasian and a precise definition of the Jurassic-Cretaceous boudary in the latter well. The established calpionellid
biozonation - identical to the "standard biozonation" of the Mediterranean area - permitted calibration of the stratigraphic ranges of foraminiferal and ostracod marker species at and near the Jurassic-Cretaceous boundary. The top of the Tithonian has been placed at the highest stratigraphic
occurrence of Anchispirocyclina lusitanica (Egger), which in Bonnition H-32 corresponds to the lower part of calpionellid Zone "B".
The combined use of foraminiferal, ostracod and calpionellid biozonations has been found to provide excellent stratigraphic definition across the Jurassic-Cretaceous boundary, from the East Newfoundlant Basin to the Georges Bank area. This definition is undoubtedly better than that attainable by
using one category of microfossils alone.
A Cumulative Index To Permafrost Conference Proceedings, 1958-1983
Authors: Heginbottom J A , Sinclair M
Published: November 2010

This index covers the publ ished proceedings volumes and field excursion guidebooks produced for four international Conferences on Perma­frost (1963, 1973, 1978 and 1983), four Canadian Permafrost Conferences (1962, 1964, 1969 and 1981) and eight smaller meetings
on special aspects of permafrost science and engineering held in Canada between 1971 and 1979. The main subject index is a computer generated, key-word index of titles; separate regional and author indexes are included. Of the nearly 1200 papers, etc., indexed, all but 35 are in English or have been
translated into English. Of these 35, one is in French and 34 are in Russian; English abstracts are available for all of these.
Geological data and notes on the stratigraphy of four potash mine Shafts in the Patience Lake-Lanigan area, East of Saskatoon, Saskatchewan
Authors: Price L L
Published: November 2010

Fossils and large lithologie samples were collected from newly excavated material during construction of potash mine shafts at four sites east of Saskatoon, Saskatchewan, over the 83 km interval from Patience Lake to Lanigan. Stratigraphie data from this material
are supplemented by logs of continuous core from the pilot hales for the shafts and observations of the shaft walls. A number of geological features are well illustrated in the shafts. All of the shafts traverse atypical dolomitic post-Watrous sediments in a small Jurassic sub-basin marginal to the
main Jurassic northern Williston Basin and controlled by sub-Mesozoic topography in the eroded surface of Paleozoic rocks. The widespread unconformity at the top of the petroliferous Turonian Favel "second white specks" and beneath the petroliferous Boyne white specks is marked in the Saskatoon East
area by a conglomerate containing silicified coarse fish bone fragments. Numerous bentonite beds in the interval of the Favel at Lanigan are followed consistently by heavy deposits of fishbones from extensive volcanic ash kills. Belly River deltaic deposits are well developed at the top of the Upper
Cretaceous marine Lea Park Formation except at Alwinsal, where erosion of the preglacial bedrock cuts clown to marine Lea Park shale. The overlying marine Bearpaw shale is also present in all but the Lanigan (Alwinsal) area. Fossils are listed in the stratigraphie logs as identified by G.S.C.
paleontologists and their comments on the paleontology and correlations are given in the descriptive notes.
Stratigraphy and Sedimentology of the Lorrain Formation, Huronian Supergroup (Aphebian), Between Sault Ste. Marie and Elliot Lake, Ontario, and Implications For Stratiform Gold Mineralization
Authors: Lowey G W
Published: November 2010

The Lorrain Formation is a thick. (maximum 2500m) deposit of meta­sedimentary rocks in which three regional subdivisions are recognized: 1) a Lower Unit (:maximum thickness 638m) , characterized by varicoloured feldspathic sandstones and minor amounts of shales,
that contains poorly preserved sedimentary structures; 2) a Middle Unit (:maximum thickness 1311m), consisting of cross stratified hematitic quartzose sandstones and interbedded quartz and jasper pebble conglomerates, that is locally red; and 3) an Upper Unit (maximum thickness 762m), distinguished
by white quartzose sandstones that contains poorly preserved sedimentary structures. Locally, five to eight members or map units are distinguishable. Eight recurrent lithofacies types are defined, including two conglomerate lithofacies (massive conglomerate and crudely cross stratified
conglomerate), five sandstone lithofacies (massive sandstone, planar cross bedded sandstone, trough cross bedded sandstone, horizontally laminated sandstone and rippled sandstone), and one shale lithofacies (horizontally laminated shale). The eight lithofacies types are grouped into four lithofacies
assemblages and interpreted environmentally as: 1) transitional marine deposits (massive sand­stone assemblage), 2) distal fluvial (wet) fan deposits (pebbly sandstone assemblage and cross bedded sandstone assemblage); and 3) proximal fluvial (wet) fan deposits (conglomerate assemblage). The Lower
Unit was deposited rapidly in a transitional environment follaving deglaciation and deposition of Gowganda sediments. Isostatic rebound, climatic change and/or tectonic uplift resulted in the progradation of a series of coalescing fluvial fans (Middle Unit) transverse to the depositional basin. A
decrease in uplift coupled with arise in sea level resulted in the reworking of previous deposits, primarily by waves and wind, and deposition of the Upper Unit. Stratigraphically, the lorrain Formation records a regressive event (transitional deposits of the laver Unit and distal and proximal
fluvial fan deposits of the Middle Unit), succeeded by a transgressive event (proximal and distal fluvial fan deposits of the Middle Unit and transitional deposits of the Upper Unit). Stratiform gold mineralization (averaging 4.5 ppb) is interpreted as Witwatersrand-type sed.imentary paleoplacer
concentrations. Heavy mineral laminae (principally specularite) probably formed by selective sorting (i.e. lighter and larger quartz grains were entrained and transported at a higher rate than heavier and smaller specularite and gold grains). The Middle Unit of the Lorrain Formation (pebbly
sandstone and cross bedded sandstone assemblages, representing distal fluvial fan deposits) has the greatest potential for hosting economic gold deposits.
Hydrogeochemical Investigations in the Cypress Hills area, Saskatchewan
Authors: Dyck W , Campbell R A
Published: November 2010

In order to assess the U potential and the hydrogeochemical character of the Cypress Hills area, Saskatchewan, a regional groundwater survey was carried out during the summer of 1976 covering 18,000 km 2 of the southwest corner of Saskatchewan. Approxima tel y
865 wells and 7 5 springs were sampled at a sample density of 1 sample per 13 km 2, where possible, and up to 30 variables were determined on each sample. In addition to the regional groundwater survey 20 lakes and three main streams in the area were also sampled. Analytical results show that a
great contrast exists between the geochemistry of natural and man-made lakes. Natural lakes, essentially salt pans, are highly concentrated in dissolved salts, whereas the man-made · lakes (i.e., dammed-up streams) exhibit element contents similar to that of the streams. Detailed seasonal
studies of a section of the Frenchman River near Eastend revealed several Rn and U rich groundwater sources which were not visible in the stream sediment patterns. Numerous field observations, sampling and analytical error, and precision tests indicate that the methodology employed needs
simplification and improvement. In particular, procedures are required which minimize sample contamination, errors in. sample data coding and recording, and analytical errors, particularly in the misreading of instrumental analog displays. The mass production of high quality data requires more
foolproof procedures than those adequate for small batches of samples. The results from the well survey clearly reveal that regional topographic and hydrological features have a strong effect on the distribution of the dissolved salts. Waters from the more highly elevated areas (the Cypress Hills),
where rainfall is more abundant, contained significantly lower concentrations of dissolved salts and trace elements than did the water from the lower flatter regions to the south and north of the hills. This dominant trend in the element patterns is believed to be due in part to the mechanism of
evapotransportation. The distribution of U followed this same regional pattern, however, elevated Rn levels are confined primarily to the Cypress Hills, viz., the radioactive conglomerates of the Cypress Hills Formation, and the underlying radioactive lignites. Coincident He and CH1t anomaly
patterns, with weaker but similar F, Na, Cl, and depth patterns, are believed to be structurally controlled and give an indication of the brine- and natural oil and gas pools at depth in the region. Anomalous As and Se concentrations in the well waters, with individual concentrations markedly in
excess of the maximum acceptable levels of 50 ppb and 10 ppb respectively, may pose a health problem for humans and livestock in the area.
Fluid Inclusion Evidence On the Diagenesis of the Manetoe Facies, Yukon and Northwest Territories
Authors: Aulstead K L , Spencer R
Published: November 2010

Fluid inclusions from dolomite, quartz, calcite and fluorite cements in the Manetoe facies, southern Yukon and Northwest Territories, were examined. Data from the fluid inclusions reveal that the white dolomite cements formed from relatively hot, hypersaline
brines. This is in good agreement with oxygen isotope data. Other associated diagenetic mineral phases formed from relatively hot waters of normal marine to higher salinities. The presence of hydrocarbons in inclusions and different water compositions imply at least two separate fluid migrations
through the region.
Bibliography of Quaternary Geoscience Information, British Columbia
Authors: Clague J J
Published: November 2010

A bibliography of Quaternary geoscience information for British Columbia has been compiled (cut-off date = December 1986). The bibliography lists published papers, monographs, maps, theses, and readily available manuscript reports concerned with various aspects
of the Quaternary Period in British Columbia. Studies of stratigraphy, Quaternary history, geomorphology, paleoecology, sedimentology, glaciation, and landslides constitute the bulk of the catalogued information, but documents in the fields of economic, environmental, and engineering geology,
geochemistry, geochronology, glaciology, hydrology, seismology, soil science, tectonics, and volcanology are also included. Company reports, abstracts of papers presented orally at scientific meetings, and documents of restricted availability have been excluded. The bibliography consists of two
parts. The first part includes two master reference lists, one for the offshore and another for land areas. The second part comprises 17 shorter, thematic reference lists.
Organic Geochemistry of Some Cambrian-Proterozoic Sediments, Colville Hills, Northwest Territories
Authors: Macauley G
Published: November 2010

Ninety samples from cores of Cambra-Proterozoic sediments at eight locations were analyzed by Rock-Eval pyrolysis to determine both kerogen type and thermal maturation levels as a means of assessing source beds and petroleum potential relative to known gas
accumulations in the Old Fort Island sandstones in the Colville Hills. Organic-rich partings in dolostones within the Mount Cap Old Fort Island section contain Type II kerogen which has been thermally matured high into, and possibly in part beyond, the oil generation window in the Colville area.
Dark grey shales of the Mount Cap Formation are also potential source beds. Those shales exhibiting a greenish cast contain too little organic carbon to have source potential. Total organic carbon in Proterozoic beds is low and their source potential is questionable. To the west in the Ontaratue
area, Cambra-Proterozoic strata are all low in organic carbon and are interpreted to be thermally overmature. Greenish Mount Cap beds in the Mackenzie Depocentre are too low in kerogen to be source beds or to define a level of thermal maturity.
Geochemistry of Organic-Rich Ordovician Sediments On Akpatok and Baffin Islands, Northwest Territories
Authors: Macauley G
Published: November 2010

Surface exposures of Ordovician strata on southern Baff in Island and Akpatok Island were searched for potential oil shalesource bed intervals. Immature Type I I oil shales were encountered in two apparently separate zones on Baffin Island. On Akpatok Island,
slightly organic limestones also contain immature Type II kerogen. An earthy dolostone contains Type II marginal to low (?) maturity kerogen in the Rowley M-04 well on Rowley Island. Although not an objective of this project, the Ordovician succession on southern Baff in Island has been described in
three lithologic units, an upper orange knobby limestone, a middle grey elongate nodular limestone section containing blue-grey shales and the organic-rich intervals, and a lower grey-weathering ledge-forming limestone. These units are correlatable to the
sections on Akpatok Island and to the Rowley M-04 well on Rowley Island.
Overburden Geochemistry and Possible Relations To Gold-Bearing Alluvial Deposits, Southwest Gaspésie, Quebec
Authors: Bernier M A , Elson J A , Webber G R
Published: November 2010

Possible sources of various elements and minerals, including gold and: garnet, :found in anomalous concentrations in stream sediments within the Matapedia River drainage basin in south west Gaspesie were investigated in a study of the geomorphology and
compositional nature or the upland overburden in an area or about 2400 km2. Investigations on the, geomorphology of the area show that Pleistocene events have had little influence in shaping the observed topography and drainage patterns. The project area is a dissected plateau with summit altitudes
from 1300 to 1500 feet (396 to 457 m) above sea level, and floors or the major valleys 'from 150 to 750 feet (46 to 229 m) above sea level.
Upland overburden is thin and commonly not thicker than the soil profile. It varies from a diamict with a large proportion of the underlying bedrock and a lesser component or far-travelled material, to a rubble composed almost entirely of weathered underlying bedrock. Major element analyses of the
-60 mesh (<250 um) fraction of overburden and trace element analyses of heavy mineral concentrates show changin compositions across the area in approximate correspondence with changes in underlying rock types. The abundance of heavy minerals in overburden is related to the concentration
of Shield-derived minerals within the heavy mineral 'fraction. The distribution of heavy mineral abundances in turn rerlects the distribution of bedrock lithologies and suggests that lithological differences may have affected the pattern ofdeposition and erosion of the Laurentide ice sheet as it
flowed across the area.
Gold analyses within the -60 mesh (<250 um) fraction of overburden show that gold is in very low concentrations. However, gold analyses within heavy mineral concentrates extracted from overburden provide a better estimate of gold variation across the area and outline a number of anomalous
zones. High abundances of gold in heavy mineral concentrates from overburden samples collected north of the mouth of the Assemetquagan River and east of the Matapeda River (within a 36 km2 area) support the hypothesis of a local source to the north-northwest for the alluvial gold at the mouth of the
Assemetquagan River.
Metallogenic studies of Pb-Zn-Ba occurrences in the Lower and Middle Paleozoic sedimentary rocks of the lower St-Lawrence and northern Gaspésie area, Quebec, part I
Authors: Schrijver K
Published: November 2010

Galena and/or sphalerite are the dominant sulfides in ten essentially vein-, fracture- and vug-bound mineral occurrences in the Paleozoic sedimentary sequence of the Lower St-Lawrence and northern Gaspesie area. Dominant gangue minerals are barite in two
occurrences, quartz in two others, and carbonates (mainly calcite) in the remainder. Three are accompanied by traces of disseminated galena. Field study and microscopy of these diverse occurrences show that they are post kinematic with respect to the latest brittle-deformation history of their
diverse host rocks. Well defined veins are commonly characterized by a preferred distribution of their sulfide load near the selvedges, especially so where the gangue minerals show a comb-textured pattern of growth. Galena-sphalerite inclusion-enclosure relations show no generally valid paragenetic
sequence of these two minerals. The absence of zoning in sphalerite is inferred to be evidence for a unique and short-lived event of sulfide-mineralization in the filling of the vein(s) constituting an occurrence.
Norman Wells Pipeline Monitoring Sites, Ground Temperature Data File: 1986
Authors: Burgess M M
Published: November 2010

The Permafrost Research Section of the Geological Survey of Canada, of the Department of Energy, Mines and Resources, in cooperation with the Department of Indian and Northern Affairs and Interprovincial Pipe Line Ltd., has undertaken a long term ground thermaI
regime monitoring program along the Norman Wells to Zama pipeline. The program is designed to examine the effects of the construction and operation of the Norman Wells pipeline on permafrost and terrain condition and to evaluate the approaches used to minimize terrain disturbance. The program
focuses on thirteen main monitoring sites representing a cross section of the terrain conditions encountered by the buried, "ambient" temperature, oil pipeline as it traverses the discontinuous permafrost zone. These monitoring sites, six of which were established in 1984 and seven in 1985, are
instrumented with multithermistor cables. Twelve additional cables were installed in 1986; 5 at 3 new IPL thaw settlement sites and 7 at 4 existing government monitoring locations. This report is a collect ion of the data gathered in l 986 f rom all cables at the government monitoring sites (in
total over 140 cables}. Data are presented in tabular form and as plots of ground temperature envelopes.
Reprocessing of Industry Data of the North Nahanni Region: Implications For the Interpretation of the Nahanni Earthquake Sequence
Authors: Lamontagne M , Milkereit B
Published: November 2010

The proximity of a 1970 industry seismic profile to the 1985 Nahanni earthquakes (Ms 6.6 and 6.9) led the Geological Survey of Canada to reprocess the original data to obtain improved structural information about the Nahanni region of the Mackenzie mountains.
Despite of the poor data quality, the reprocessing enhanced shallow reflectors. The interpretation of the English Chief anticline suggests that the position of its crest is different from the geological map. Deeper (7.5 km approx.) reflectors are seen for some of the shots. These reflectors may
suggest that the sedimentary succession is at least 7.5 km thick in the Nahanni region. A first break analysis of shot gathers defined near-surf ace zones of high velocities (approx. 6.0 km/sec) and of low velocity (approx. 4.5 km/sec) along the seismic profile. These velocity values are closely
tied to the geologyi the high and low velocities correspond to the Middle Devonian carbonates and to the Upper Devonian shale and sandstone, respectively. Station time delays are proposed to correct for the homogeneous velocity model by which the hypocentres are calculated. In addition,
supplementary geophysical and geological work is suggested. A new seismic reflection profile should be conducted in the Nahanni region to probe the deeper crustal structure of the region (5-10 km). Geological mapping of the
region should be done on a more detailed scale with special attention on the structural geology. Finally, ground gravity and magnetic surveys should be conducted to complement the geological mapping of the area. For future work at the GSC, the original industry data set and the related information
has been documented.
Geological assessment of shallow faults and structural disturbances from the eastern Scotian Shelf and Laurentian Channel area
Authors: Durling P W , Fader G B
Published: November 2010

An analysis of over 12,000 km of airgun seismic reflection profiles and Huntec DTS high resolution seismic reflection profiles revealed considerable tectonism on the eastern Scotian Shelf and Laurentian Channel area. Much of the deformation occurs within the
bedrock of the Orpheus Basin and on the Cape Breton Island Shelf. The deformation appears to be mainly pre-Quaternary, as structural deformation within the surficial sediments appears quite limited. However, only 2,000 km of the high resolution seismic reflection profiles that could resolve
surficial faulting exist in the area. Forty-two clearly defined bedrock faults and two surficial sediment faults were identified. Displacements of up to 35 m were within preQuaternary bedrock. A displacement of 1 m within the surficial sediments was the maximum recognized. A relationship between
bedrock and surficial sediment faulting was not determined mainly due to a lack of critical data. Furthur investigation with high resolutiion seismic reflection systems over areas of known bedrock faulting would resolve the relationships.
Norman Wells Pipeline Monitoring Sites Ground Temperature Data File: 1987
Authors: Burgess M M , Naufal J A
Published: November 2010

The Permafrost Research Section of the Geological Survey of Canada, Department of Energy, Mines and Resources, cooperates with the Department of Indian and Northern Affairs and Interprovincial Pipe Line Ltd. (IPL), in a long term ground thermal regime monitoring
program along the Norman Wells to Zama pipeline. The program is designed to examine the effects of the construction and operation of the Norman Wells pipeline on permafrost and terrain conditions and to evaluate the approaches used to minimize terrain disturbance. The program focuses on thirteen
main monitoring sites representing a cross section of the terrain conditions encountered by the buried, "ambient" temperature, oil pipeline as it traverses the discontinuous permafrost zone. These monitoring sites established during the construction period are instrumented with multi thermistor cab
les to measure pipe temperatures and ground temperatures both on and off the right-of-way. Since pipeline operation began in April 1985, additional cables have been installed to instrument 1) five thaw settlement sites drilled by IPL in 1986, 2) additional boreholes drilled at existing government
monitoring locations, and 3) deep (>90 m) boreholes drilled for climate change studies along the pipeline corridor. This report is a collection of the data gathered in 1987 from all cables at the government monitoring sites (in total over 145 cables). Data are presented both graphically
and in tabular form.
Lithoprobe Seismic Reflection Profiles Across the Kapuskasing Structure
Authors: Milkereit B , Green A G , Cook F A , West G F
Published: November 2010

As part of the Canadian LITHOPROBE Program approximately 390 km of deep reflection data were recorded along 9 lines across the Kapuskasing Structure Zone (KSZ), the Wawa and Abitibi subprovinces of the Superior Province. The survey was designed to resolve the
deep structure associated with the KSZ, which exposes middle to lower crustal rocks affected by wide-spread compression and extension in the Archean and a major intra-plate thrust event sometimes in the Proterozoic. Data were generated using up to four vertical vibrators, recorded with a 240
channels, conventionally processed in CMP geometry, and migrated. The stacked, migrated and coherency enhanced data presented in this report are plotted at 1:100000. This format allows interested parties to interpret the data independently and to compare directly the results with a wide variety of
seismic reflection data being released by other groups.
Norman Wells Pipeline Monitoring Sites Ground Temperature Data File: 1988
Authors: Burgess M M , Naufal J A
Published: November 2010

The Permafrost Research Section of the Geological Survey of Canada (GSC), Department of Energy, Mines and Resources (EMR), cooperates with the Department of Indian and Northern Affairs (INAC) and Interprovincial Pipe Line Ltd. (IPL), in a project to monitor the
ground thermal regime along the Norman Wells to Zama pipeline. The project forms part of a larger Permafrost and Terrain Research and Monitoring Program established to improve on impact evaluation and mitigation on the Norman Wells and future northern pipelines. The ground thermal regime study is
designed to examine the effects of the construction and operation of the Norman Wells pipeline on permafrost and terrain conditions and to evaluate the approaches used to minimize terrain disturbance. The project focuses on 13 main monitoring sites representing a cross section of the terrain
conditions encountered by the buried, "ambient" temperature, oil pipeline as it traverses the discontinuous permafrost zone. The monitoring sites established during the construction period are instrumented with multithermistor cables to measure pipe temperatures and ground temperatures both on and
off the right-of-way to depths of 20 m. Since pipeline operation began in April 1985, additional cables have been installed to instrument 1) five thaw settlement sites drilled by IPL in 1986, 2) additional boreholes drilled at existing government monitoring locations, and 3) deep ( >90 m)
boreholes drilled for climate change studies along the pipeline corridor. This report is a collection of the data gathered in 1988 from all cables at the EMR/INAC monitoring sites, in total over 145 cables. The period covered includes the fourth thaw season since operation. Average volume of oil
moved from Norman Wells was increased over the previous 3 years and peak oil movement was in the range of 4800 m3/day, or approximately design capacity.
A compilation of deep-sea oxygen isotope records
Authors: Tushingham A M
Published: November 2010

Oxygen isotope records have been employed to estimate changes in global ice volume, ocean temperature, ocean circulation, and other related phenomena during the Quatemary. Sorne long-term records have also been used to estimate Milankovitch orbital parameters.
Previously these estimates have been based on a limited number of records, often only one record was examined, but here 256 records from 189 deep-sea cores have been compiled for future referral.
Regional Jurassic and Cretaceous facies assemblages, and structural geology in Bowser Lake map area [104A], B.C.
Authors: Evenchick C A , Mustard P S , Porter J S , Greig C J
Published: November 2010

Bowser Lake map area (104A) is underlain primarily by the Middle Jurassic to mid-Cretaceous Bowser Lake Group. Other bedrock units are Lower to Middle Jurassic Hazelton Group, two small plutons, and at least 3 small outliers of Pliocene Maitland volcanics. The
Bowser Lake Group is divided into 3 broad lithofacies assemblages, comprising depositional environments ranging from deep marine, to open platformal marine, to nonmarine. Devils Claw Formation is the only formai lithostratigraphic unit of the group mapped. All pre-Tertiary stratified rocks are
intensely folded and faulted, and are included in the Skeena Fold Belt. Northeast vergent folds dominate, but southwest vergent ones are also present. As in other parts of the fold belt, fold geometry, orientation and scale vary widely, but unique to this region are local large scale recumbent
folds.
Surficial geology of Fraser Lowlands digitized from GSC Maps 1484A, 1485A, 1486A, and 1487A (92 G/1,2,3,6,7; 92 H/4)
Authors: Dunn D , Ricketts B
Published: November 2010

The Surficial Geology of the Fraser Lowland, originally published by J.E. Armstrong and S.R. Hicock at 1:50,000 scale, is released in digital format under the auspices of the Geological Survey of Canada, Vancouver Hydrogeology Program. The maps were digitized in
ARC/INFO Version 6.1 using UTM Coordinates (NAD27) and converted to DXF format for each layer. These files were then loaded into Autocad Version 12 and compiled and converted to a single DXF file. The Legend for each map was scanned and converted to an ASCII text form. The .DXF and .TXT files on
this MS-DOS disk are distributed as self-extracting archive files (*.EXE files). To extract all the files you will need about 6 megabytes of disk space. Copy the contents of the open file disk to a directory on your hard disk. To unpack the .DXF files, type 92G1 (or whatever file you are
extracting) at the DOS prompt and press the ENTER key. To save disk space you can now delete the .EXE files.

The self-extracting archive files were created using the program LHA, Version 2.10, Copyright (c) 1988-91, Haruyasu Yoshizaki, used with permission.
Triassic gas resources of the Western Canada Sedimentary Basin, interior plains
Authors:   Geological Survey of Canada
Published: November 2010

Natural gas resource potential of Triassic strata in the Western Canada Sedimentary Basin (excluding the Foothills Belt) was evaluated using a combination of geological play analysis and statistical estimation. Triassic strata belong to a platformal succession of
mixed siliciclastic, carbonate, and evaporite sediments deposited along the western portions of the basin. The thickest deposits, and most of the oil and gas, occur in the westward thickening and deepening depocentre called the Peace River Embayment. The Triassic succession contains a total
discovered in-place volume of 288 400 x 106 m3 raw gas reserves in 10 mature and 2 immature plays. Exploration plays consist of stratigraphic and stratigraphic-structural combination traps, with reservoirs in aeolian, shoreline, tidal channel, and shallow marine sandstones, coquinas, and tidal flat
and marine shelf carbonates. Statistical analysis of the ten established mature plays suggests they contain a remaining potential of 272 124 x 106 m3. Three of these plays are predicted to contain over one half of the remaining gas potential: the Halfway/Doig Formation shelf sandstones play,
influenced by Peace River Arch/Embayment structures (e.g., Monias field); the Baldonnel Formation subcrop play, involved in Laramide-aged gentle folds (e.g., Laprise field); and the Halfway/Doig Formation shoreline-related sandstone reservoirs, influenced by Peace River Arch/Embayment structures
(e.g., Sinclair field). Statistical analysis of the mature plays indicates that a total of 13 plays are likely to exist. These include the 10 mature plays, 2 immature plays (the Montney Subcrop North-Ring play and the Montney Distal Shelf-Glacier play) with undiscovered gas in-place totalling 28 162
x 106 m3, and 1 conceptual play with 5 615 x 106 m3 gas in-place. The relatively minor amount of gas estimated to be present in the conceptual and immature plays (33 777 x 106 m3-11% of the total resource) is consistent with the exploration maturity of the basin and the fact that established
play definitions are sufficiently broad to include variations in trapping mechanism. Expected potential in-place gas volumes in mature, immature and conceptual plays(unencumbered by economic constraints) total 305 901 x 106 m3, indicating that over 50 per cent of the total in-place resource remains
to be discovered. Triassic strata continue to offer attractive exploration targets, as shown by recent activity at Valhalla, Spirit River and Grande Prairie.
Geology, Rankin Inlet (55K/16), Falstaff Island (55J/13) and Quartzite Island (55J/11), District of Keewatin, Northwest Territories
Authors: Tella S
Published: November 2010

This preliminary Open File geological map presents results of bedrock mapping undertaken in the region during 1985,1991,1992, and 1994 field seasons. The objectives of the mapping were to upgrade the reconnaissance database, and to address some of the outstanding
structural, metamorphic, and metallogenic problems in the region, in order to provide a framework for regional correlation and tectonic synthesis of rock units of this part of the Churchill Structural Province. Detailed accounts of bedrock geology covering the region were published in numerous GSC
publications. The reader is referred to the references cited here for a comprehensive overview of the geology of the region.
Seismograms for historic Canadian earthquakes: the 5 September 1944 Cornwall-Massena earthquake
Authors: Bent A L
Published: November 2010

This paper is one in a series of reports designed to catalog the Geological Survey of Canada's ( GSC) collection of seismograms for historical Canadian earthquakes. The data set has been assembled by past and present seismologists at the GSC. The seismogram
collection for the 1944 Cornwall-Massena earthquake consists of records from 32 North American seismograph stations. To assist those who may study this earthquake in the future, this report describes the seismograms in the collection and indicates which record segments have been digitized. The
digital data files may be obtained from the GSC.
Magnetic activity in Canada during the solar- terrestrial disturbance of 24-25 March 1991
Authors: Boteler D H , Jansen van Beek G , Hruska J
Published: November 2010

The solar-terrestrial event of 22-25 March 1991, was one of the largest this solar cycle, producing a very strong particle flux, a second inner radiation belt, and a large geomagnetic disturbance. This caused solar panel degradation and other satellite
malfunctions as well as communication and power system problems. This report examines the resulting magnetic disturbance observed across Canada on 24-25 March, presenting stack plots of the temporal variations and using equivalent current plots to map the spatial characteristics of the disturbance.
A notable feature of the results is that the largest magnetic field variations occurred in the polar cap and not, as is more common, in the auroral zone. These polar cap magnetic variations are attributed to Hall currents in the ionosphere resulting from the enhanced convection of field lines across
the polar cap. The extreme magnitude of the polar cap disturbance indicates the severity of the solar wind plasma cloud interaction with the earth's magnetosphere.