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The AAPG/Datapages Combined Publications Database

AAPG Special Volumes

Abstract


 
Chapter from: M 64:  Sequence Stratigraphy of Foreland Basin Deposits
Edited By 
J.C. Van Wagoner and G.T. Bertram

Authors:
N.J. Milton and G.T. Bertram

Seismic/Sequence Stratigraphy

Published 1995 as part of Memoir 64
Copyright © 1995 The American Association of Petroleum Geologists.   All Rights Reserved.
 

Chapter 1

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Topset Play Previous HitTypesNext Hit and Their Controls
 

N. J. Milton

G. T. Bertram1

BP Exploration

Forus, Norway


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ABSTRACT


Cycles of progradation and retrogradation of a basin-margin system of topsets and clinoforms are controlled by the balance between sediment supply rate and the rate of creation of topset accommodation volume. The latter is defined as the product of the topset area and the rate of rise of relative sea level. If the system is graded, with sand preferentially trapped in the proximal part of the system, i.e., the topsets, then the topset sand percentage is controlled by the rate of sand supply and the rate of creation of topset accommodation volume. The topsets of Previous HitsystemsNext Hit Previous HittractsNext Hit with a high topset volume will be relatively less sandy than those with a low topset volume, and topset sand percentage will vary in a systematic manner within a sequence.

The play Previous HittypesNext Hit associated with the topsets are strongly influenced by the relative abundance in the topsets of reservoir and seal. Different Previous HittypesNext Hit of basins are characterized by different topset play Previous HittypesTop.

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