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TitleSubsurface Paleozoic structure and isopach maps and selected seismic lines in southern Northwest Territories and northern Alberta: implications for mineral and petroleum potential
AuthorMorrow, D W; MacLean, B C; Tzeng, P; Pana, D
SourceGeological Survey of Canada, Open File 4366, 2002, 22 pages; 1 CD-ROM, (Open Access)
PublisherNatural Resources Canada
Documentopen file
Mediapaper; CD-ROM; digital; on-line
File formatpdf (Adobe Acrobat Reader); doc; cdr
ProvinceAlberta; Northwest Territories
NTS74D/09; 74D/10; 74D/11; 74D/12; 74D/13; 74D/14; 74D/15; 74D/16; 74E; 74L; 74M; 75D; 75E; 84A/09; 84A/10; 84A/11; 84A/12; 84A/13; 84A/14; 84A/15; 84A/16; 84B/09; 84B/10; 84B/11; 84B/12; 84B/13; 84B/14; 84B/15; 84B/16; 84C/09; 84C/10; 84C/11; 84C/12; 84C/13; 84C/14; 84C/15; 84C/16; 84D/09; 84D/10; 84D/11; 84D/12; 84D/13; 84D/14; 84D/15; 84D/16; 84E; 84F; 84G; 84H; 84I; 84J; 84K; 84L; 84M; 84N; 84O; 84P; 85A; 85B; 85C; 85D; 85E; 85F; 85G; 85H
AreaGreat Slave Lake; Peace River
Lat/Long WENS-120.0000 -110.0000 62.0000 56.5000
Subjectseconomic geology; geophysics; structural geology; hydrocarbon potential; mineral potential; faults; fault zones; shear zones; seismic interpretations; geophysical interpretations; lead; zinc; mineralization; isopachs; structural features; stratigraphic correlations; Tathlina Fault; Rabbit Lake Fault Zone; Hay River Fault; Peace River Arch; Paleozoic; Devonian; Silurian; Ordovician; Carboniferous
Illustrationssketch maps; isopach maps; seismic lines; stratigraphic sections
ProgramTargeted Geoscience Initiative (TGI-1), 2000-2003
Released2002 08 01
AbstractSubsurface mapping indicates that the region northwest of the Great Slave Shear Zone contains an array of previously identified northeast-trending faults and fault zones that cross abrupt inflections of contours on structure and isopach maps. The Tathlina Fault, faults within the Rabbit Lake Fault Zone, and the Hay River Fault are all large northeast-trending faults that lie northwest of the shear zone. Southeast of the shear zone, contours on subsurface structure maps display fewer pronounced inflections and inferred faults are fewer in number except in the Peace River Arch area. Seismic lines in the southern Northwest Territories show smaller contractional reverse faults of Late Devonian age that have offset the Slave Point in the subsurface of the western part of the Cameron Hills. Farther east, on seismic lines near Hay River, larger high angle thrust faults occur entirely within Precambrian strata. In both of these areas, the Slave Point and sub-Slave Point Paleozoic strata display a disturbed stratigraphy of discontinuous internal seismic reflectors. Stratigraphic disturbances such as these may indicate the presence of Pine Point types of mineralized lead-zinc deposits, or possibly zones of natural gas.