Skip to Main Content
Book Chapter

Submarine Fan Through Slope to Deltaic Transition Basin-Fill Succession, Tanqua Karoo, South Africa

By
Grant D. Wach
Grant D. Wach
Texaco Upstream Technology, Houston, Texas, U.S.A.
Search for other works by this author on:
Theodore C. Lukas
Theodore C. Lukas
Texaco Upstream Technology, Houston, Texas, U.S.A.
Search for other works by this author on:
Robert K. Goldhammer
Robert K. Goldhammer
Texaco Upstream Technology, Houston, Texas, U.S.A.
Search for other works by this author on:
H. Deville Wickens
H. Deville Wickens
Consultant, Kuils River, South Africa
Search for other works by this author on:
A. H. Bouma
A. H. Bouma
Department of Geology and Geophysics, Louisiana State University, Baton Rouge, Louisiana, U.S.A.
Search for other works by this author on:
Published:
January 01, 2000

Abstract

Superb sections of submarine fan deposits within the Late Permian Ecca Group are exposed within the Tanqua Karoo basin. Five discrete fan systems are capped by shales and deltaic deposits of the Kookfontein and equivalent Koedoesberg formations. Progradation of the deltaic deposits across the basin was in response to a decrease in accommodation space created by relatively high rates of sedimentation within the foreland basin setting. Evidence for the transition from submarine fans to deltaic deposition has been enigmatic, with limited evidence of sediments representative of slope deposition.

The sedimentology and sequence stratigraphy of the Hangklip Fan represents a slope fan and channel complex that shallows up into deltaic deposits, coincident with decresing accomodation space. Erosional slump scars, cutting into laminated shale with chaotic infill of sand intraclasts, point toward slope depositional processes that are not in evidence in the underlying submarine fan deposits. Wave ripples and the trace fossil Gyrochorte suggest substantially shallower depositional conditions than either the submarine fan or slope fan deposits, which are devoid of such features.

You do not currently have access to this article.
Don't already have an account? Register

Figures & Tables

Contents

AAPG Memoir

Fine-Grained Turbidite Systems

Arnold H. Bouma
Arnold H. Bouma
Search for other works by this author on:
Charles G. Stone
Charles G. Stone
Search for other works by this author on:
American Association of Petroleum Geologists
Volume
72
ISBN electronic:
9781629812625
Publication date:
January 01, 2000

GeoRef

References

Related

A comprehensive resource of eBooks for researchers in the Earth Sciences

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal