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TitreHALIP intrusions, contact metamorphism, and incipient diapirism of gypsum-carbonate sequences
TéléchargerTéléchargement (publication entière)
AuteurBédard, J H; Troll, V; Deegan, F
SourceReport of activities for High Arctic Large Igneous Province (HALIP) - GEM 2 Western Arctic Region Project: bedrock mapping and mineral exploration; par Williamson, M -C (éd.); Commission géologique du Canada, Dossier public 7950, 2016 p. 3-13, https://doi.org/10.4095/297783
Année2016
ÉditeurRessources naturelles Canada
Éditionrev.
Documentdossier public
Lang.anglais
DOIhttps://doi.org/10.4095/297783
Mediaen ligne; numérique
Référence reliéeCette publication est contenue dans Williamson, M -C; (2016). Report of activities for High Arctic Large Igneous Province (HALIP) - GEM 2 Western Arctic Region Project: bedrock mapping and mineral exploration, Commission géologique du Canada, Dossier public 7950, éd. rev.
Référence reliéeCette publication remplace Bédard, J H; Troll, V; Deegan, F; (2016). HALIP intrusions, contact metamorphism, and incipient diapirism of gypsum-carbonate sequences, Report of activities for High Arctic Large Igneous Province (HALIP) - GEM 2 Western Arctic Region Project: bedrock mapping and mineral exploration, Commission géologique du Canada, Dossier public 7950
Formatspdf
ProvinceNunavut
SNRC49G; 59E; 59F; 59G; 59H; 120F; 340B; 340C; 340D; 340E; 340F; 560A; 560D
Lat/Long OENS -96.0000 -64.0000 83.5000 78.0000
Sujetsgéologie du substratum rocheux; roches ignées; roches intrusives; minéralisation; roches volcaniques; nickel; cuivre; platine; magmatisme; filons-couches; métamorphisme; Formation de Strand Fiord ; Bassin de Sverdrup ; Formation d'Isachsen ; Formation d'Hassel ; Formation de Christopher ; stratigraphie; géologie économique; Mésozoïque; Crétacé; Jurassique; Trias; Paléozoïque
Illustrationslocation maps; photographs
ProgrammeLIP de l'haut-Arctique de l'ouest de l'Arctique, GEM2 : La géocartographie de l'énergie et des minéraux
Diffusé2016 03 09
Résumé(disponible en anglais seulement)
As part of the High Arctic Large Igneous Province (HALIP) GEM2 project, five sets of HALIP-related intrusions and wallrocks were sampled for a regional-scale study of geochemical signatures indicative of PGE-Ni exploration potential. Investigation of a bedded gypsum-carbonate sequence revealed possible incipient diapiric structures with a wavelength of ~100 m and an amplitude of ~40 m. Incipient diapiric mass flow appears to be the result of a diagenetic (?) reaction between the two lithologies that generate large amounts of gas or fluid that brecciate wall rocks (decreasing strength) and increase volume (generating buoyancy). Several sample sections were collected through an oil-shale adjacent to a sill to better constrain the impact of HALIP intrusions on the basin's oil and gas potential, to quantify the volumes and species of environmentally significant gas species expelled, and to determine the impact of shale assimilation on magma chemistry and possible sulphide immiscibility.
GEOSCAN ID297783