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TitleReport of activities for the geology and mineral potential of the Chantrey - Thelon area: GEM-2 Thelon tectonic zone project
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorBerman, R GORCID logo; Nadeau, L; McMartin, IORCID logo; McCurdy, M WORCID logo; Craven, J A; Girard, E; Sanborn-Barrie, MORCID logo; Carr, S; Pehrsson, S J; Whalen, J B; Davis, W JORCID logo; Roberts, B J; Grenier, A
SourceGeological Survey of Canada, Open File 7693, 2015, 14 pages, Open Access logo Open Access
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
RelatedThis publication is related to the following publications
File formatpdf
NTS76G; 76H; 76I; 76J
AreaBack River; Ellice River
Lat/Long WENS-108.0000 -106.0000 67.0000 65.0000
Subjectsstratigraphy; geophysics; structural geology; geochemistry; bedrock geology; analytical methods; glacial deposits; structural interpretations; mineral potential; geophysical interpretations; magnetic anomalies; magnetotelluric interpretations; Thelon Tectonic Zone; Queen Maud block; Rae craton; Slave Province; Precambrian; Proterozoic
Illustrationslocation maps; photographs
ProgramGEM2: Geo-mapping for Energy and Minerals Rae Province, Chantrey-Thelon
Released2015 01 09
The Geo-mapping for Energy and Minerals (GEM) program is laying the foundation for sustainable economic development in the North. The Program provides modern public geoscience that will set the stage for long-term decision making related to investment in responsible resource development. Geoscience knowledge produced by GEM supports evidence-based exploration for new energy and mineral resources and enables northern communities to make informed decisions about their land, economy and society. Building upon the success of its first five-years, GEM has been renewed until 2020 to continue producing new, publically available, regional-scale geoscience knowledge in Canada's North.
During the summer 2014, GEM's new research program has been launched with 14 field activities that include geological, geochemical and geophysical surveying. These activities have been undertaken in collaboration with provincial and territorial governments, northerners and their institutions, academia and the private sector. GEM will continue to work with these key collaborators as the program advances.
Summary(Plain Language Summary, not published)
The Thelon tectonic zone project addresses scientific questions relevant to the mineral exploration industry in NTS map sheets 76H and 76I. Bedrock mapping mostly along two transects in 76H resulted in recognition of (1) nine crustal domains with distinct aeromagnetic and lithological characteristics, (2) a number of kinematically diverse high-strain zones, (3) 7 new gossans. Samples were collected for geochemical and geochronological analysis. Magnetotelluric data obtained from 2 transects correlate with crustal domains. Reconnaissance surficial geology maps were tested by ground-truthing and aerial observations. Cross-cutting striae and glacially-molded bedrock surfaces indicate northward regional ice flow shifted northwestward. Till samples were collected along two 80-km long transects and to follow up on geochemical anomalies identified in 2012. Stream silt and water samples were collected from 85 sites in northern NTS 76I and 7 sites in 76H as a followup to a 2012 survey.

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