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TitleGeophysical characteristics of the northern Cordillera
DownloadDownload (whole publication)
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorHayward, NORCID logo; Ryan, J J
SourceNorthern Cordillera geology: a synthesis of research from the Geo-mapping for Energy and Minerals program, British Columbia and Yukon; by Ryan, J J (ed.); Zagorevski, AORCID logo (ed.); Geological Survey of Canada, Bulletin 610, 2021 p. 145-176, Open Access logo Open Access
PublisherNatural Resources Canada
Mediaon-line; digital
RelatedThis publication is contained in Northern Cordillera geology: a synthesis of research from the Geo-mapping for Energy and Minerals program, British Columbia and Yukon
RelatedNRCan photo(s) in this publication
File formatpdf
ProvinceBritish Columbia; Yukon
NTS95D; 95E; 104M; 104N; 104O; 105; 106B; 106C; 106D; 106E; 106F; 106G; 115G; 115H; 115I; 115J; 115K; 115N; 115O; 115P; 116
AreaMcQuesten; Carmacks; Stevenson Ridge; Ruby Ranges; Mount Nansen; Klaza River; Dawson; Frances Lake; Marsh Lake; Wolf Lake; Yukon Plateau; Nisling River; Scroggie Creek; Wolverine Creek
Lat/Long WENS-141.0000 -127.0000 67.5000 59.0000
Subjectsgeophysics; regional geology; structural geology; tectonics; economic geology; surficial geology/geomorphology; Science and Technology; Nature and Environment; geophysical surveys; aeromagnetic surveys; magnetic surveys, airborne; total field magnetics; magnetic anomalies; magnetic susceptibility; geophysical interpretations; magnetic interpretations; gravity interpretations; gravity anomalies; bouguer gravity; seismic interpretations; seismic velocities; structural interpretations; tectonic interpretations; lineament interpretations; bedrock geology; structural features; folds; faults; lithology; ultramafic rocks; igneous rocks; intrusive rocks; sedimentary rocks; lineaments; structural trends; crustal structure; tectonic history; tectonic evolution; decollement; terranes; faulting; displacement; intrusions; batholiths; plutons; mineral deposits; porphyry deposits; vein deposits; mineral occurrences; structural controls; paleodrainage; modelling; models; compilation; field work; in-field instrumentation; densities; topography; Canadian Cordillera; Intermontane Belt; Yukon-Tanana Terrane; Cache Creek Terrane; Slide Mountain Terrane; Stikinia Terrane; Quesnellia Terrane; Cassiar Terrane; North American Craton; Selwyn Basin; Teslin Fault; Tintina Fault; Denali Fault; Whitehorse Trough; geological contacts; Phanerozoic; Cenozoic; Mesozoic; Paleozoic; Precambrian
Illustrationsgeoscientific sketch maps; index maps; tables; location maps; photographs; 3-D models; seismic reflection profiles; magnetic profiles
ProgramGEM2: Geo-mapping for Energy and Minerals
Released2021 11 25
AbstractGeophysical data acquired under the Geological Survey of Canada's GEM Cordillera project provide a foundation to a broad range of geological investigations in the northern Canadian Cordillera. For areas of specific geological interest, over 230 000 km of high-resolution aeromagnetic data form a mosaic of comprehensive coverage over a total area of more than 82 000 km2. The data provide a powerful and valuable legacy data set for current and future activities by the Geological Survey of Canada and academic and industry partners and clients.
Foremost, geophysical data interpretation complements surface geological mapping, especially in inaccessible terrain where bedrock exposure is commonly poor, enabling clearer definition of a region's geology and structure. Beyond applications to bedrock geological mapping, geophysical modelling, integrated with geological results, affords an improved understanding of the deeper crustal structure, leading to new models of the region's tectonic development and mineral deposit context.
Summary(Plain Language Summary, not published)
Geophysical results from the northern Canadian Cordilleran activities of the GEM Program (Phases 1 and 2) are summarised. Aeromagnetic surveys form the core of the data acquired. These data are presented as well as compilations of the individual surveys to provide continuous coverage and maps of the data across the northern Cordillera. Examples are provided on the integrated strategy in use of the data to support geological mapping, leading to improved geological maps. Regional compilation data were also used to understand the broad scale structure and plate tectonic history of the region.

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