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The AAPG/Datapages Combined Publications Database

CSPG Bulletin

Abstract


Journal of the Alberta Society of Petroleum Geologists
Vol. 7 (1959), No. 11. (November), Pages 260-266

Major Diachronism in Carboniferous Deposits of the Bow Valley Area, Alberta

James M. Drummond

ABSTRACT

Carboniferous sediments in the Bow Valley area of Alberta are represented by four major lithostratigraphic units which apparently transgress time horizons towards the west. The four rock types involved are interpreted to represent in-shore sands (Rocky Mountain formation), lagoonal mud (Etherington and Mount Head formations), crinoid banks (Livingstone formation), and open-sea shales (Banff formation). The distribution of the lithostratigraphic units is related to a gently emergent Carboniferous landmass in the east.

Because of diachronism the paleontology of these Carboniferous rocks will be complicated by the existence of environmentally defined faunal groups of different appearance but of the same age, and other groups of similar appearance but of different ages.


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