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TitlePreliminary carbon and oxygen isotope analyses of hydrothermal carbonates from Mississippi Valley-type and REE-F-Ba deposits of the southern Canadian Rocky Mountains - a comparison
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AuthorParadis, S; Simandl, G J
SourceTargeted Geoscience Initiative: 2018 report of activities; by Rogers, N (ed.); Geological Survey of Canada, Open File 8549, 2019 p. 205-216, (Open Access)
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
RelatedThis publication is contained in Rogers, N; (2019). Targeted Geoscience Initiative: 2018 report of activities, Geological Survey of Canada, Open File 8549
File formatpdf
ProvinceBritish Columbia; Alberta
NTS82F; 82G; 82J; 82K; 82N; 82O
AreaRocky Mountains; Fernie; Kicking Horse Pass
Lat/Long WENS-118.0000 -114.0000 52.0000 49.0000
Subjectseconomic geology; geochemistry; mineral deposits; base metals; zinc; lead; fluorine; barium; magnesite; sedimentary ore deposits; strata-bound deposits; mineral exploration; ore mineral genesis; mineralization; ore controls; isotopic studies; carbon isotopes; oxygen isotopes; bedrock geology; lithology; carbonates; dolostones; dolomites; sedimentary basins; sedimentary facies; paleogeography; continental margins; host rocks; sedimentary environments; depositional environment; precipitation; tectonic setting; hydrothermal systems; deformation; petrographic analyses; Canadian Cordillera; Foreland Belt; Kicking Horse Rim; Rock Canyon Creek Deposit; Oldman Deposit; Boivin Deposit; Shag Deposit; Hawk Creek Deposit; Cathedral Escarpment; Ancestral North America; Rocky Mountain Trench; ore systems approach; Mississippi Valley-type deposits (MVT); carbonate-hosted deposits; sediment-hosted deposits; rare earth elements; Phanerozoic; Paleozoic; Ordovician; Cambrian
Illustrationslocation maps; geoscientific sketch maps; photomicrographs; geochemical plots
ProgramTargeted Geoscience Initiative (TGI-5), Knowledge Management Coordination
ProgramTargeted Geoscience Initiative (TGI-5), Volcanogenic massive sulphide ore systems - base metal sources and processes
Released2019 03 01
AbstractZinc-lead Mississippi Valley-type (MVT), carbonate-hosted REE-F-Ba and magnesite deposits of the southern Canadian Rocky Mountain Foreland Belt occur along the southwestern edge of the Kicking Horse Rim, a paleo-topographic high that coincides with a carbonate platform-to-basin facies transition along the ancient Paleozoic margin. Mineralization is hosted in dolostone and is typically associated with sparry and saddle dolomite (ferroan dolomite in association with REE-F-Ba). Carbon and oxygen isotopes done on these carbonate phases show differences and similarities. All sparry, saddle and ferroan dolomite associated with mineralization have similar delta-18OVPDB values that are lower than those of their host dolostone. However, their delta-13CVPDB values are different with lower values for dolomites at the REE-F-Ba Rock Canyon Creek deposit than those for the MVT deposits. The depletion in 18O suggests that dolomites associated with mineralization precipitated from or interacted with hydrothermal fluids. The delta-18OVPDB and delta-13CVPDB values of dolomite associated with mineralization at Rock Canyon Creek plot outside the field of primary igneous carbonatites, and lies on the general trend connecting the southeastern British Columbia carbonatite field to the field for unmineralized host carbonates in the same area.