GEOSCAN, résultats de la recherche


TitreRecent high-resolution airborne radiometric/magnetic surveys, Athabasca Basin region: a new dataset to improve mapping and uranium exploration
AuteurFortin, R; Buckle, J; Campbell, J E; Miles, W; Ford, K L; Keating, P; Potter, E G; Jefferson, C W
SourceSaskatchewan Geological Survey, Open House 2010, abstracts volume; par Saskatchewan Ministry of Energy and Resources; 2010 p. 12
Séries alt.Secteur des sciences de la Terre, Contribution externe 20100267
ÉditeurSaskatchewan Ministry of Energy and Resources
RéunionSaskatchewan Geological Survey Open House; Saskatoon; CA; Novembre 29 - décembre 1, 2010
Mediaen ligne; numérique
SNRC64E; 64L; 64M; 74E; 74F; 74G; 74H; 74I; 74J; 74K; 74L; 74M; 74N; 74O; 74P
Lat/Long OENS-112.0000 -102.0000 60.0000 57.0000
Sujetslevés géophysiques; levés aéromagnétiques; levés radiométriques; uranium; thorium; potassium; méthodes d'exploration; géophysique
ProgrammeUranium, GEM : La géocartographie de l'énergie et des minéraux
LiensOnline - En ligne (Presentation, PDF 14.5 MB)
LiensAbstract - Résumé (Whole publication, 470 KB)
Résumé(disponible en anglais seulement)
Since 2000, the Canadian and Saskatchewan geological surveys have collaborated on a major airborne geophysical effort, providing key information for geological mapping and mineral exploration. The collaboration has yielded 10 airborne radiometric and magnetic surveys in the Athabasca Basin region, and produced one of the most extensive, high-resolution geophysical coverages in Canada. The state-of-the-art methodology has contributed to greatly enhanced data resolution compared with pre-existing public domain airborne surveys. The digital data and high level map products are all available to download for free through the Geoscience Data Repository for Radiometric Data. ( Given the enhanced resolution and coverage, interesting aspects of the data warrant further integrated interpretation of the magnetic and spectrometric data.
Whereas aeromagnetic data have been successfully applied by industry and government in exploration, airborne radiometric surveys constitute an under-valued, key tool for interpretation of surficial geology, which includes sediment and exposed bedrock. Discrete domains in the surveys are defined by radioactive element concentrations and associations which show distinct eU, eTh, K spectral patterns that are most evident on ternary ratio maps. These patterns aid in mapping sediment composition, provenance and glacial transport. Along the eastern fringe of the basin, regional eTh responses correlate well with outcropping of MFb member whereas an untested southwest trending eTh-eU-K anomaly in the central portion of the basin likely reflects regional scale glacial transport of basement material into the basin. For mineral exploration, interpretation of airborne radiometric data requires ground-based verification of anomalies.