| Title | Structure, stratigraphy, U-Pb geochronology and alteration characteristics of gold mineralization at the Detour Lake Gold Deposit, Ontario, Canada |
| Author | Oliver, J; Ayer, J; Dubé, B; Aubertin, R; Burson, M; Panneton, G; Friedman, R; Hamilton, M |
| Source | Exploration and Mining Geology vol. 20, 2012 p. 1-30 |
| Year | 2012 |
| Alt Series | Earth Sciences Sector, Contribution Series 20130054 |
| Document | serial |
| Lang. | English |
| Media | paper |
| Province | Ontario |
| NTS | 32E/13 |
| Area | Detour Lake |
| Lat/Long WENS | -80.0000 -79.5000 50.0000 49.7500 |
| Subjects | structural geology; geochronology; stratigraphy; mineral occurrences; mineral deposits; gold; mineralization; structural analyses; structural features; structural interpretations; structural controls;
uranium lead dates; uranium lead dating; uranium lead ratios; alteration; Archean; Detour Lake Formation; Abitibi Greenstone Belt; Precambrian |
| Illustrations | location maps; tables; Concordia diagrams; photomicrographs; stereonets; photographs; stratigraphic columns |
| Program | Gold Ore Systems, Targeted Geoscience Initiative (TGI-4) |
| Abstract | The Detour Lake gold deposit is located within the northwestern limit of the Archean Abitibi Subprovince of the Superior Province. Mineralized zones are hosted by a sequence of pillowed and massive
flows, hyaloclastite units, and altered ultramafic rocks, and are commonly oriented parallel to a series of high-strain zones that are co-planar to the regional-scale Sunday Lake Deformation Zone. Early in its kinematic history, the Sunday Lake
Deformation Zone placed older (2.72 Ga) volcanic rocks of the Detour Lake Formation over younger (2.70 Ga) sedimentary rocks of the Caopatina assemblage. Gold mineralization is also parallel to the position of a laterally persistent siliceous rock
unit, the 2.725 Ga 'Chert Marker Horizon.' The Chert Marker Horizon coincides with the boundary between the mafic-dominated upper Detour Lake Formation and the ultramafic-dominated lower Detour Lake Formation. Stratigraphic and geochronological data
suggest that the Chert Marker Horizon is a deformed felsic volcaniclastic unit. |
| GEOSCAN ID | 292585 |
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