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TitleOverview of bedrock mapping in the western and northern parts of the Tehery Lake-Wager Bay area, western Hudson Bay, Nunavut
AuthorSteenkamp, H M; Wodicka, N; Weller, O M; Kendrick, J
SourceCanada-Nunavut Geoscience Office Summary of Activities 2016; Canada-Nunavut Geoscience Office, Summary of Activities .
Alt SeriesEarth Sciences Sector, Contribution Series 20160222
PublisherCanada-Nunavut Geoscience Office
Documentserial
Lang.English
Mediapaper
ProvinceNunavut
NTS46D; 46E; 56A; 56H
AreaTehery Lake; Wager Bay; Hudson Bay
Lat/Long WENS -92.0000 -86.0000 66.0000 64.0000
Subjectseconomic geology; geochronology; general geology; geological surveys; bedrock geology; field work; geochemical surveys; geochronometry; petrographic analyses; economic analyses; granulite facies; Chesterfield fault zone; Wager shear zone; mapping campaign
Illustrationsgeological sketch maps; location maps; photographs
ProgramCanada-Nunavut Geoscience Office, Funding Program
AbstractBedrock-geology mapping was conducted in the summer of 2016 in the Tehery Lake - Wager Bay area on the northwestern coast of Hudson Bay, Nunavut, as part of amultiyear,multidisciplinarymapping campaign led by theGeological Survey of Canada, through Phase 2 of the Geo-mapping for Energy and Minerals program (GEM-2), and the Canada-Nunavut Geoscience Office. Fieldwork resulted in the identification and spatial constraint of rock units in the northern and western parts of the study area, which were sampled for geochemical, geochronological and petrographic analysis, as well as to assess their economic potential. Mapping has revealed the presence of a large granulite-facies metamorphic domain in the southern part of the study area; the possibility of two different supracrustal rock sequences; thewestern continuations of the Chesterfield fault zone andWager shear zone; and generally high, but locally variable, peakmetamorphic conditions across the study area. Further analytical work is required to fully characterize rock units, compare and correlate them with other well-studied units, and determine the geological history and economic potential of the Tehery Lake - Wager Bay area.
Summary(Plain Language Summary, not published)
Geology mapping was done in the summer of 2016 in the western and northern parts of the Tehery Lake-Wager Bay study area on the northwestern coast of Hudson Bay, Nunavut. This work is part of a large multi-year project led by the Geological Survey of Canada's Geo-mapping for Energy and Minerals program and the Canada-Nunavut Geoscience Office. Rock samples were collected to analyze their chemistry, age, and mineral make-up, and to find out if any have economic metals in them. The mapping revealed several new discoveries: 1) a large part of the southern map area has rocks that were changed due to high temperatures (800-900°C); 2) there are two different groups of sedimentary rocks, likely deposited in different environments and times; 3) the Chesterfield fault and Wager shear zone were traced further to the east and west, respectively; 4) rocks in the study area have been heated and pressurized due to mountain-building processes, but conditions were not the same everywhere.
GEOSCAN ID299334