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Scope and preliminary results of radiolarian biostratigraphic studies, Fort Fraser and Prince George map areas, central British Columbia
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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 Norian/Rhaetian). Similar associations are known within the Cache Creek Group in southern British
Columbia and Yukon Territory.
Title: Scope and preliminary results of radiolarian biostratigraphic studies, Fort Fraser and Prince George map areas, central British Columbia
Description:
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 Norian/Rhaetian).
Similar associations are known within the Cache Creek Group in southern British
Columbia and Yukon Territory.
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