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The Sequence Stratigraphy of the East China Sea: Where are the Incised Valleys?

By
Jeffrey D. Warren
Jeffrey D. Warren
Department of Geological Sciences University of North Carolina at Chapel Hill Mitchell Hall, CB #3315 Chapel Hill, NC 27599-3315 e-mail: seismic@unc.edu
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Louis R. Bartek, III
Louis R. Bartek, III
Department of Geological Sciences University of North Carolina at Chapel Hill Mitchell Hall, CB #3315 Chapel Hill, NC 27599-3315 e-mail: Bartek@email.unc.edu
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Published:
December 01, 2002

Abstract

The lowstand systems tract from the last glacial maximum (i.e., oxygen isotope stage 2; c. 14-24 ka) preserved on the East China Sea continental margin is the only lowstand systems tract during the Holocene and late Pleistocene (500 ka to present) that exhibits major incision. Evidence of these incised valleys is found in both present-day bathymetry and in seismic and chirp data. Older lowstand systems tracts, however, lack major incisive features on the inner and mid shelf and exhibit laterally and vertically extensive (up to 300 km and 60 m, respectively) packages of chaotic seismic reflections attributed to frequent fluvial avulsion. Incision in these older lowstand systems tracts, where it does occur, is primarily restricted to the outer shelf, however, it is not associated with knickpoint migration from the shelf-slope break, which remained submerged during even the lowest lowstands.

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Contents

GCSSEPM

Sequence Stratigraphic Models for Exploration and Production: Evolving Methodology, Emerging Models and Application Histories

John M. Armentrout
John M. Armentrout
Houston, Texas
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Norman C. Rosen
Norman C. Rosen
Houston, Texas
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SEPM Society for Sedimentary Geology
Volume
22
ISBN electronic:
978-0-9836096-8-1
Publication date:
December 01, 2002

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