Scope and preliminary results of radiolarian biostratigraphic studies, Fort Fraser and Prince George map areas, central British Columbia - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Current research, Part A/Recherches en cours, Part A, Geological Survey of Canada Année : 1996

Scope and preliminary results of radiolarian biostratigraphic studies, Fort Fraser and Prince George map areas, central British Columbia

Résumé

As part of the new Nechako NATMAP project, radiolarian biostratigraphic investigations started in the Fort Fraser (93K) and Prince George (93G) map areas in central British Columbia. Their scope is to provide control on the age and structures of the Cache Creek Group and related units. Eighty samples of radiolarian chert, siliceous mudstone, and chert clasts have been collected. Preliminary chemical processing confirms radiolarians from ribbon chert strata near Fort St. James, and undated siliceous mudstone of the Sowchea sequence. Six chert pebbles from a Cretaceous conglomerate near Pinchi Lake released well preserved associations ranging in age from Middle Triassic (late Anisian-Ladinian) to Late Triassic (late Carnian, early-middle Norian, late NorianlRhaetian). Similar associations are known within the Cache Creek Group in southern British Columbia and Yukon Territory.

Dates et versions

hal-03275904 , version 1 (09-07-2021)

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Citer

Fabrice Cordey, L.C. Struik. Scope and preliminary results of radiolarian biostratigraphic studies, Fort Fraser and Prince George map areas, central British Columbia. Current research, Part A/Recherches en cours, Part A, Geological Survey of Canada, 1996, 1996A, pp.83-90. ⟨10.4095/207413⟩. ⟨hal-03275904⟩
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