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Solution Porosity of Dolomites in the Calcareous – Phosphatic Facies of the Monterey Formation, Pismo Basin, California

By
R.C. Surdam
R.C. Surdam
University of Wyoming Dept. of Geology/Geophysics P.O. Box 3006 Laramie, WY 82071
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D. Prezbindowski
D. Prezbindowski
AMOCO Production Co. Research Center P.O. Box 591 Tulsa, OK 74102
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R.I. Kablanow
R.I. Kablanow
University of Wyoming Dept. of Geology/Geophysics P.O. Box 3006 Laramie, WY 82071
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Published:
January 01, 1984

Abstract

In the calcareous-phosphatic facies of the Miocene Monterey Formation in the Pismo Basin, there is significant development of enhanced porosity due to solution of dolomite (see Fig. 1 and 2). The calcareous-phosphatic facies has been described in detail by Surdam and Stanley (1981). This facies consists of interbedded foraminiferal and coccolith oozes that have been extensively dolomitized and phosphatic dolostone (see Fig. 3). The dissolution of dolomite is particularly prominent in the phosphatic dolostones. These rocks average 10 wt. % organic carbon, but can have up to 20 wt. % TOC and 15% P2O5.

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Contents

SEPM Field Trip Guide

Stratigraphic, Tectonic, Thermal, and Diagenetic Histories of the Monterey Formation, Pismo and Huasna Basin, California

Ronald C. Surdam
Ronald C. Surdam
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SEPM Society for Sedimentary Geology
Volume
2
ISBN electronic:
9781565762770
Publication date:
January 01, 1984

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