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Abstract

Derby, James R., Robert J. Raine, Anthony C. Runkel, and M. Paul Smith, 2012, Paleogeography of the great American carbonate bank of Laurentia in the earliest Ordovician (early Tremadocian): The Stonehenge transgression, in J. R. Derby, R. D. Fritz, S. A. Longacre, W. A. Morgan, and C. A. Sternbach, eds., The great American carbonate bank: The geology and economic resources of the Cambrian–Ordovician Sauk megasequence of Laurentia: AAPG Memoir 98, p. 5–13.

DOI:10.1306/13331487M983496

Copyright copy2012 by The American Association of Petroleum Geologists.

Paleogeography of the Great American Carbonate Bank of Laurentia in the Earliest Ordovician (Early Tremadocian): The Stonehenge Transgression

James R. Derby,1 Robert J. Raine,2 M. Paul Smith,3 Anthony C. Runkel4

1Consultant, Leonard, Oklahoma, U.S.A.; Present address: Department of Geosciences, University of Tulsa, Tulsa, Oklahoma, U.S.A.
2Lapworth Museum of Geology, University of Birmingham, Edgbaston Birmingham, United Kingdom; Present address: Ichron Ltd., Norwich, Cheshire, United Kingdom
3Lapworth Museum of Geology, University of Birmingham, Edgbaston Birmingham, United Kingdom; Present address: Oxford University Museum of Natural History, Oxford, Oxfordshire, United Kingdom
4Minnesota Geological Survey, Saint Paul, Minnesota, U.S.A.

ACKNOWLEDGMENTS

This map was compiled by the authors with advice from Martin Keller, Pat Dickerson, Keith Dewing, George Previous HitDixTop, John Taylor, John Repetski, and Svend Stouge, and consultation with the many manuscripts for this volume.

ABSTRACT

This chapter describes and presents a newly compiled map illustrating the paleogeography of Laurentia during the earliest Ordovician, a time when the great American carbonate bank was at one of its greatest extents and a period for which the most is understood. The map depicts the known or postulated extent of the inner detrital belt, the great American carbonate bank and the more problematic (commonly structurally relocated) outer detrital belt. The period on which the map is based and discussed in the accompanying text is based on the Early Ordovician (early Ibexian) (early Tremadocian) Stonehenge transgression.

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