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The AAPG/Datapages Combined Publications Database
CSPG Bulletin
Abstract
Abstracts: Ordovician Geology of the Prophet River Map-Area, British Columbia
Ordovician rocks northwest of Ft. St. John, British Columbia, were deposited in a shallow, marine basin bordering a Precambrian Cambrian high. The clastic sediments were derived from the northeast and east, and are now found in abundance in the limestones and dolomites which were deposited near the shoreline. Uplift in Late Ordovician or early Silurian time removed the Upper and Middle Ordovician sediments in the northeast and part of the Upper Ordovician sediments in the southeast, but did not affect the sediments of the western graptolitic belt until later in Silurian time.
Upper Palaeozoic and Mesozoic rocks, outcropping east of the map-area, have been eroded at various intervals since Silurian time.
The Palaeozoic rocks of the map-area have been folded and thrust to the east along low-angle faults. Locally the time of deformation is known to be post-Lower Cretaceous since Cambrian rocks now overlie those of Cretaceous age.
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ACKNOWLEDGMENTS AND ASSOCIATED FOOTNOTES
1962, University of Alberta, M.Sc.
Copyright © 2004 by The Society of Canadian Petroleum Geologists. All Rights Reserved.
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