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Book Chapter

Preface

Published:
January 01, 1984

Abstract

The subject of this field, trip, the Monterey and adjacent formations, will be examined in detail in the Pismo Basin and to a lesser extent in the Huasna Basin. The Pismo basin is ideally suited for this detailed examination for the following reasons:

  1. Excellent geological maps of the area (Hall and Corbato, 1967; Hall, 1973a, and 1973b).

  2. Surdam, Stanley and Kablanow have spent considerable time in the Pismo and Huasna basins studying the Obispo, Monterey, Pismo and Santa Margarita formations. In addition, Stanley has spent two field seasons mapping and evaluating stratigraphic and sedimentologic relations relations in the Monterey Formation in the Santa Maria and Ventura Basins. Lastly and most important, C.A. Hall has provided us with a large high quality data base in the Pismo and Huasna Basins.

  3. A detailed tectonic history of the region has recently been published by C.A. Hall (1981).

  4. The present-day Pismo Syncline outlines a Miocene-Pliocene depositional basin where Monterey and overlying rocks accumulated. Therefore the boundaries and internal geometry of the depositional basin are well delineated (Hall & Corbato, 1967; Hall, 1973a, 1973b).

  5. The Monterey Formation in the Pismo Syncline was originally characterized by three kinds of sediment (diatromaceous ooze, calcareous and phosphatic ooze, and terrigenous sands and muds). In addition, there is abundant organic material (TOC = 1 to 6 wt.%) in the marine rocks and there are petroleum reservoirs in the basin.

  6. In the Pismo Syncline the Monterey Formation unconformably overlies the Obispo Formation. The Obispo Formation consists of 2000 to 3000

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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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