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TitreMineral resource assessment of the Pacific Margin sponge reef areas of interest
TéléchargerTéléchargements
AuteurBarrie, J V
SourceCommission géologique du Canada, Dossier public 6915, 2012, 18 pages, https://doi.org/10.4095/291498 (Accès ouvert)
Image
Année2012
ÉditeurRessources naturelles Canada
Documentdossier public
Lang.anglais
DOIhttps://doi.org/10.4095/291498
Mediaen ligne; numérique
Référence reliéeCette publication est reliée Hannigan, P K; Dietrich, J R; (2012). Petroleum resource potential of the Hecate Strait / Queen Charlotte Sound Glass Sponge Reef areas of interest, Pacific Margin of Canada, Commission géologique du Canada, Dossier public 6860
Formatspdf
ProvinceRégion extracotière de l'ouest
Lat/Long OENS-131.5000 -128.0000 53.5000 51.0000
Sujetsressources pétrolières; exploration pétrolière; capacité de production d'hydrocarbures; roches mères; bassins sédimentaires; pétrole; gaz; analyses du bassin; récifs; dépôts récifaux; changements du niveau de la mer; variations du niveau de la mer; océanographie; organismes marins; milieux marins; sédiments marins; aggrégats; carbonates; Bassin d'Hecate ; Bassin de Queen Charlotte ; Éponges; combustibles fossiles; paléontologie; géologie marine; géologie économique; Cénozoïque; Quaternaire
Illustrationslocation maps; photographs; tables
ProgrammeEnvironnement et ressources minérales et énergétiques (ERME)
Diffusé2012 08 17 (13:00)
Résumé(disponible en anglais seulement)
Glass sponge reefs (Hexactinellida, Hexactinosida) off the Pacific Margin of Canada are both geologically and ecologically unique and represent the only global occurrence. In order to provide protection to these unique living cold-water reefs, the Department of Fisheries and Oceans under the Oceans Act have made the four large reefs within the Pacific North Coast Integrated Management Area (PNCIMA) designates for protection as Marine Protected Areas (MPA). The federal government's process for evaluation of a MPA of Interest requires an assessment of the non-renewable resource potential, including marine minerals. Based on the limited knowledge of the offshore British Columbia surficial mineral potential, two settings that may contain mineral placers of gold and titanium include drowned beach and reworked shelf deposits at water depths of 150 m to the modern beach. In addition, extensive areas of construction aggregate and calcium carbonate occur on the shelf. The deep water sponge reefs within the Areas of Interest occur in depths below 150 m within glacial sediments and, therefore, outside the potential setting for mineral placers or industrial minerals. Consequently, the enactment of the sponge reef Marine Protected Areas will not include any surficial mineral deposits of economic potential.
GEOSCAN ID291498