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The AAPG/Datapages Combined Publications Database

Journal of Sedimentary Research (SEPM)

Abstract


Journal of Sedimentary Petrology
Vol. 35 (1965)No. 4. (December), Pages 818-837

Devonian Paleoecology of Northeastern Alberta

D. M. Loranger

ABSTRACT

Shallow epicontinental seas of Middle and Upper Devonian time in Alberta contained abundant microfauna and megafauna which can be used to interpret the environment at the time of deposition. Enough variation exists to differentiate supra-littoral, littoral, sublittoral, arid lagoonal, humid lagoonal, shoal, epineritic and neritic environments.

A series of paleoecological maps for the Middle and Upper Devonian in northeastern Alberta illustrate the detailed paleogeographic history. The transitional boundary between the Givetian and Frasnian stages is explored and a contact postulated that is considerably higher stratigraphically than previously indicated, and can be related to the Devonian of North America. This paleoecological approach should be equally applicable to similar problems in any area and for almost any geological period.


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