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TitleRegional geology and geophysics of the sub-Phanerozoic Precambrian basement south of the Flin Flon-Snow Lake-Hanson Lake Belt, Manitoba-Saskatchewan
DownloadFree download (whole publication) (pdf 141668 KB)
AuthorLeclair, A D; Lucas, S B; Scott, R G; Viljoen, D; Broome, J
SourceCanadian Shield/Bouclier canadien; by Geological Survey of Canada; Geological Survey of Canada, Current Research no. 1994-C, 1994 p. 215-224,
PublisherNatural Resources Canada
RelatedThis publication is contained in Geological Survey of Canada; Geological Survey of Canada; (1994). Canadian Shield, Geological Survey of Canada, Current Research no. 1994-C
ProvinceManitoba; Saskatchewan
NTS63K; 63L
AreaFlin Flon; Snow Lake; Amisk Lake
Lat/Long WENS-103.2500 -100.0000 54.7500 54.0000
Subjectsgeophysics; structural geology; bedrock geology; geophysical interpretations; geophysical surveys; gneisses; paragneisses; orthogneisses; metamorphic rocks; plutonic rocks; granites; igneous rocks; magnetic anomalies; gravity anomalies; volcanic rocks; Amisk Group; Cumberland Domain; Namew Gneiss Complex; Cormorant Batholith; Windy Lake Pluton; Hanson Lake Block; Suggi Lake Fault; Trans-Hudson Orogen; Precambrian; Proterozoic
Illustrationssketch maps
ProgramCanada-Manitoba Partnership Agreement on Mineral Development, 1990-1995
ProgramCanada-Saskatchewan Partnership Agreement on Mineral Development, 1990-1995
ProgramShield Margin NATMAP Project
Released1994 02 01
AbstractRegional geological mapping of the sub-Phanerozoic segment of the Flin Flon-Snow Lake-Hanson Lake Belt (Trans-Hudson Orogen)involved the interpretation of potential field data combined with relogging of industry drill core. This approach has permitted the subdivision of the buried Precambrian basement into eight principal domains which are defined by their distinct lithostructural characteristics and aeromagnetic-gravity anomaly patterns. The Amisk Lake, Athapapuskow, and Clearwater domains are characterized by northerly trending positive gravity anomalies and correlate with volcanic assemblages (Amisk Group) on the exposed shield. The Namew Gneiss Complex and Cumberland Domain are marked by complexly distributed orthogneiss and paragneiss packages. Late-tectonic granite of the Cormorant Batholith and Windy Lake Pluton are centred over low-intensity aeromagnetic and gravity anomalies. The sub-Phanerozoic portion of the Hanson Lake Block, bounded by the Sturgeon-weir Shear Zone and Tabbernor Fault Zone, is subdivided into two volcano-plutonic subdomains by the Suggi Lake Fault.