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Book Chapter

Pull-Apart Margins - Eastern Atlantic Ocean

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Published:
January 01, 1977

Abstract

The sedimentary evolution and petroleum potential of the Gabon Coastal Basin are closely tied with plate tectonics. Two kinds of objectives associated with the two main phases can interest the petroleum geologists:

  1. The proto-oceanic rift - some detrital deposits in the rift have a great extension as the “gres de base” and the GAMBA Formation, while Lucina and Dentale formations have only a local extension. All of them can constitute good reservoir beds. Source rocks are proved to be in situ. They have to be located in the organic rich levels of the same formations. Traps are associated with extensional tectonics of the rift. They are situated on the fringes of old moles and horts.

  2. Evolution and embankment of the Continental Margin of the growing ocean. Salt deposit occurred at the end of the rift phase and/or the very beginning of the oceanic opening. Structural features of the overlying series are conditioned mainly by salt tectonics.

The progradation of the continental edge is done by a succession of overlapping lenses. The BATANGA, ANGUILLE and Tertiary formations are supposed to be deep sea fans. These hydrocarbon bearing formations have been fed by surrounding marine shale source rocks.

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Contents

AAPG Continuing Education Course Notes Series

Geology of Continental Margins

Joseph R. Curray
Joseph R. Curray
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William R. Dickinson
William R. Dickinson
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Wallace G. Dow
Wallace G. Dow
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Kenneth O. Emery
Kenneth O. Emery
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Donald R. Seely
Donald R. Seely
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Peter R. Vail
Peter R. Vail
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Hunter Yarborough
Hunter Yarborough
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American Association of Petroleum Geologists
Volume
5
ISBN electronic:
9781629812021
Publication date:
January 01, 1977

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