| Title | Geophysical contributions to a synthesis of western Churchill geology and metallogeny |
| Download | Downloads |
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| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Tschirhart, V ;
Pehrsson, S; Wodicka, N; Percival, J A; Jefferson, C W; Peterson, T; Berman, R G |
| Source | Geological Survey of Canada, Preprint 3, 2022, 47 pages, https://doi.org/10.4095/330639  Open Access |
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| Year | 2022 |
| Publisher | Natural Resources Canada |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Province | Northwest Territories; Nunavut; Manitoba; Ontario; Saskatchewan |
| NTS | 54; 64; 74; 55; 65; 75; 56; 66; 76; 86; 57; 67; 77; 87 |
| Area | Tehery Lake; Wager Bay |
| Lat/Long WENS | -120.0000 -80.0000 75.0000 55.0000 |
| Subjects | general geology; geophysics; regional geology; Science and Technology; metallogeny; sedimentary basins; aeromagnetic surveys; gravity surveys; models; Western Churchill Province; Rae Craton; Melville
Peninsula; Boothia Peninsula; Somerset Island Formation; Thelon Tectonic Zone; Montresor Belt; Southampton Island; Athabasca Basin |
| Illustrations | location maps; tables; magnetic maps |
| Program | GEM2: Geo-mapping for Energy and Minerals |
| Released | 2022 12 19; 2022 12 20 |
| Abstract | The geophysical data sets available for the western Churchill Province have had a bearing on the understanding of its structure, evolution and metal endowment. New data were acquired and interpreted
during the Geo-mapping for Energy and Minerals (GEM) Program (2008-2020). Regional, high-resolution aeromagnetic, and targeted gravity and magnetotelluric surveys were collected in GEM, in conjunction with geological mapping projects, in order to
provide control on bedrock features beneath widespread glacial overburden and flat-lying sedimentary basins. Quantitative estimates of three-dimensional geometry were obtained in key areas through geophysical models integrating the geophysical
characteristics with local rock property measurements. These geophysical data sets contributed to new knowledge and interpretations in three related research fields: 1) location and nature of Rae craton’s boundaries within the western Churchill
Province; 2) definition of internal Rae architecture; and 3) identification of reactivated structures controlling gold and uranium mineralization. The new data, models and emerging tectonic and metallogenic frameworks will serve as guides for future
exploration in this remote, complex, challenging region. |
| Summary | (Plain Language Summary, not published)
This chapter summarizes the gravity and magnetic modelling and interpretation results generated for parts of the Rae under the GEM I and II programs. The
maps and interpretations can be used to better understand the crustal structure and mineral endowment inform and guide future exploration in this remote region. |
| GEOSCAN ID | 330639 |
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