Abstract

A full core through the Boulder Creek Formation in the Monkman area of northeastern British Columbia yielded foraminifera from the overlying Hasler Formation and underlying Hulcross Formation, thereby constraining the age of the Boulder Creek Formation from mid middle Albian to mid late Albian. Shales of the Hulcross Formation carry the microfauna of the Haplophragmoides multiplum Subzone of the Gaudryina nanushukensis Zone. Cored shales of the Hasler Formation immediately overlying the Boulder Creek Formation carry the microfauna of the Trochammina depressa Subzone of the Haplophragmoides gigas Zone. The presence of 15 fossil soils within the middle portion of the Boulder Creek Formation records multiple depositional hiatuses within the formation in the Monkman area.

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