| Title | Geology of the Early Proterozoic gold metallotect, Hurwitz Group in the Cullaton-Griffin lakes area, central Churchill Structural Province, Northwest Territories |
| Download | Download (whole publication) |
| Author | Miller, A R; Balog, M J; Barham, B A; Reading, K L |
| Source | Canadian Shield/Bouclier canadien; by Geological Survey of Canada; Geological Survey of Canada, Current Research no. 1994-C, 1994 p. 135-146, https://doi.org/10.4095/193821 |
| Year | 1994 |
| Publisher | Natural Resources Canada |
| Document | serial |
| Lang. | English |
| Media | paper |
| Related | This publication is contained in Geological Survey of
Canada; Geological Survey of Canada; (1994). Canadian Shield, Geological Survey of Canada, Current Research no. 1994-C |
| Province | Nunavut |
| NTS | 65G/01; 65G/02; 65G/07; 65G/08; 65G/09; 65G/10; 65G/15; 65G/16; 65H/03; 65H/04; 65H/05; 65H/06; 65H/11; 65H/12; 65H/13; 65H/14 |
| Area | Cullaton Lake; Griffin Lake |
| Lat/Long WENS | -99.0000 -97.0000 62.0000 61.0000 |
| Subjects | structural geology; metallic minerals; gold; metallotects; faults; faults, thrust; structural features; hydrothermal alteration; alteration; mineral assemblages; Archean; Hurwitz Group; Churchill
Province; Shear Lake Deposit; Precambrian; Proterozoic |
| Illustrations | sketch maps; photographs |
| |
| Program | Canada-Northwest Territories Mineral Initiatives, 1991-1996 |
| Released | 1994 02 01 |
| Abstract | Remnants of northeast-trending sediment-dominated fold and thrust belts are distributed across the Churchill Structural Province, north of 60°. These belts record early Proterozoic transpression across
the entire Churchill Province. The early Proterozoic Hurwitz Group in the southern half of the Churchill Province is host to one past-producing gold mine and numerous gold prospects. Vein-type lode gold is confined to thrusts, imbricate thrust
stacks, and coeval extensional faults associated with surge zones in para-autochthonous lower Hurwitz Group strata. Zoned hydrothermal alteration assemblages are temporally and spatially related to the earliest phase of basement-cover infolding.
Hydrothermal fluids are interpreted to have been generated in the Archean basement and focused along Proterozoic thrusts and related faults. Regional variation of alteration assemblages in metasomatised Proterozoic rocks reflect hydrothermal fluid
reaction with lithologically distinct Archean basement domains. |
| GEOSCAN ID | 193821 |
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