GEOSCAN, résultats de la recherche

Menu GEOSCAN


TitrePreliminary 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
TéléchargerTéléchargement (publication entière)
AuteurParadis, S; Simandl, G J
SourceTargeted Geoscience Initiative: 2018 report of activities; par Rogers, N (éd.); Commission géologique du Canada, Dossier public 8549, 2019 p. 205-216, https://doi.org/10.4095/313652 (Accès ouvert)
Année2019
ÉditeurRessources naturelles Canada
Documentdossier public
Lang.anglais
DOIhttps://doi.org/10.4095/313652
Mediaen ligne; numérique
Référence reliéeCette publication est contenue dans Rogers, N; (2019). Targeted Geoscience Initiative: 2018 report of activities, Commission géologique du Canada, Dossier public 8549
Formatspdf
ProvinceColombie-Britannique; Alberta
SNRC82F; 82G; 82J; 82K; 82N; 82O
Lat/Long OENS-118.0000 -114.0000 52.0000 49.0000
Sujetsgisements minéraux; métaux de base; zinc; plomb; fluor; baryum; magnésite; gîtes sédimentaires; gîtes stratoïdes; prospection minière; genèse des minerais; minéralisation; contrôles des minerais; etudes isotopiques; isotopes de carbone; isotopes d'oxygène; géologie du substratum rocheux; lithologie; carbonates; dolomies; dolomites; bassins sédimentaires; faciès sédimentaires; paléogéographie; marges continentales; roches hôtes; milieux sédimentaires; milieu sédimentaire; précipitation; cadre tectonique; système hydrothermal; déformation; analyses pétrographiques; Cordillère canadienne; Ceinture de Foreland ; géologie économique; géochimie; Phanérozoïque; Paléozoïque; Ordovicien; Cambrien
Illustrationslocation maps; geoscientific sketch maps; photomicrographs; geochemical plots
ProgrammeGestion de la connaissance de IGC, Initiative géoscientifique ciblée (IGC-5)
ProgrammeSystèmes minéralisés de sulfure massif volcanogénique - métaux de base - sources et processus, Initiative géoscientifique ciblée (IGC-5)
Diffusé2019 03 01
Résumé(disponible en anglais seulement)
Zinc-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.
GEOSCAN ID313652