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Book Chapter

Neogene Turbidite Systems of the Gulf of Guinea Continental Margin Slope, Offshore Nigeria

By
John M. Armentrout
John M. Armentrout
Mobil Technology Company, Inc., Dallas, Texas, U.S.A.
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Katherine A. Kanschat
Katherine A. Kanschat
Mobil Technology Company, Inc., Dallas, Texas, U.S.A.
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Kristian E. Meisling
Kristian E. Meisling
Mobil Technology Company, Inc., Dallas, Texas, U.S.A.
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Jerome J. Tsakma
Jerome J. Tsakma
Mobil Producing Nigeria, Lagos, Nigeria
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Lisa Antrim
Lisa Antrim
Amoco Production Company3, Houston, Texas, U.S.A.
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Dennis R. McConnell
Dennis R. McConnell
Amoco Production Company3, Houston, Texas, U.S.A.
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Published:
January 01, 2000

Abstract

In the study area of the eastern Gulf of Guinea continental margin slope, offshore Nigeria, turbidite depositional systems are confined to slope-valley and slope-basin bathymetric lows bounded by densely faulted, structurally complex zones. Each depositional system consists of three architectural segments (in order): (1) upper slope, small-scale channel elements converging downslope, (2) single channel and nested channel elements with linear to sinuous map patterns, grading further downslope (3) slope-basin lobe and sheet elements. Incised channels and constructional levees indicate transport by turbulent flow. Comparison of the mapped seismic amplitude patterns of different sequences suggests switching of the inferred sand-prone turbidite systems from one slope valley to another through time. This is interpreted to reflect both the lateral shifting of the fluvial sediment supply on the shelf, and the local tectonic modification of slope-valley geometry.

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Contents

AAPG Memoir

Fine-Grained Turbidite Systems

Arnold H. Bouma
Arnold H. Bouma
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Charles G. Stone
Charles G. Stone
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American Association of Petroleum Geologists
Volume
72
ISBN electronic:
9781629812625
Publication date:
January 01, 2000

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