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Structure of Coleville-Buffalo Coulee Area, Saskatchewan

By
M. A. Reasoner
M. A. Reasoner
Calgary, Alberta
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A. D. Hunt
A. D. Hunt
Calgary, Alberta
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Published:
January 01, 1958

Abstract

Contour maps, a paleogeological map, and cross sections are presented to demonstrate the structure of the area. Lower Paleozoic structure is briefly discussed. All structures observed in the uppermost Devonian and Lower Mississippian strata are attributed to leaching of a thick Upper Devonian anhydrite member with consequent collapse of overlying beds. The drainage pattern of an old land surface developed by a post-Mississippian erosional period is outlined, and all structures in the Cretaceous are shown to be the result of compaction and draping over this old land surface. The limitations this erosional unconformity place on seismic interpretations are explained. Unconformable contact between the Mississippian Coleville sand and Cretaceous shale probably accounts for the entrapment of oil in the sand.

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Contents

AAPG Special Publication

Jurassic and Carboniferous of Western Canada

A. J. Goodman
A. J. Goodman
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American Association of Petroleum Geologists
ISBN electronic:
9781629812441
Publication date:
January 01, 1958

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