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TitreMultiple sulphur isotope reconnaissance of Slave Province volcanogenic massive sulphide deposits
TéléchargerTéléchargement (publication entière)
AuteurTaylor, B E; Peter, J M; Wing, B A
SourceTargeted Geoscience Initiative 4: Contributions to the understanding of volcanogenic massive sulphide deposit genesis and exploration methods development; par Peter, J M (éd.); Mercier-Langevin, P (éd.); Commission géologique du Canada, Dossier public 7853, 2015 p. 45-58, https://doi.org/10.4095/296544
LiensCanadian Database of Geochemical Surveys, downloadable files
LiensBanque de données de levés géochimiques du Canada, fichiers téléchargeables
Année2015
ÉditeurRessources naturelles Canada
Documentdossier public
Lang.anglais
DOIhttps://doi.org/10.4095/296544
Mediaen ligne; numérique
Référence reliéeCette publication est contenue dans Peter, J M; Mercier-Langevin, P; (2015). Targeted Geoscience Initiative 4: Contributions to the understanding of volcanogenic massive sulphide deposit genesis and exploration methods development, Commission géologique du Canada, Dossier public 7853
Formatspdf
ProvinceTerritoires du Nord-Ouest; Nunavut
SNRC75I; 75J; 75K; 75L; 75M; 75N; 75O; 75P; 76; 85I; 85J; 85O; 85P; 86A; 86B; 86G; 86H; 86I/01; 86I/02; 86I/03; 86I/04; 86I/05; 86I/06; 86I/07; 86I/08; 86I/09; 86I/10; 86I/11; 86I/14; 86I/15; 86I/16; 86P/01; 86P/02; 86P/07; 86P/08; 86P/09; 86P/16
Lat/Long OENS-116.0000 -104.0000 68.0000 62.0000
SujetsArchéen; gîtes volcanogènes; gîtes sulfureux; altération; métamorphisme; assemblages de minéraux; minéralisation; directives d'exploration; roches volcaniques; gisements minéraux; or; isotopes; rapports des isotopes de soufre; géologie économique; minéraux métalliques; Précambrien
Illustrationslocation maps; plots; histograms
ProgrammeÉtude des gîtes de sulfures massifs volcaniques, Initiative géoscientifique ciblée (IGC-4)
Diffusé2015 06 11
Résumé(disponible en anglais seulement)
Multi-sulphur isotope (32S, 33S, 34S, and 36S) analysis of galena, sphalerite, and pyrite from 30 Archean volcanogenic massive sulphide deposits and occurrences from across the Slave Province reveals a variable contribution from Archean atmosphere-derived sulphur. Mass-independent fractionation of the sulphur isotopes produced anomalous abundances (D33S) of the sulphur isotopes that were incorporated to varying degrees in deposits that formed in different tectonic settings. Our data indicate that deposits of the bimodal-mafic type (bimodal rift setting) are characterized by a restricted range of D33S from -0.3 to 0.1 per mil, whereas deposits of the bimodal-felsic type (arc-like settings) exhibit a broader range in D33S, from -0.8 to 0.6 per mil. Mantle-derived (juvenile) sulphur is essentially the sole source of sulphur in deposits of the bimodalmafic type, whether derived directly by magmatic degassing, or indirectly by leaching of magmatic sulphides in the associated hydrothermal system; these deposits are also characterized by relatively low silver contents. Bimodal-felsic type deposits, typified by high silver contents, contain variable amounts of atmosphere- derived sulphur that was more readily available in arc-like settings.
GEOSCAN ID296544