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Submarine Channel Architecture Along a Slope to Basin Profile, Brushy Canyon Formation, West Texas

By
Michael H. Gardner
Michael H. Gardner
Department of Geology and Geological Engineering, Colorado School of Mines, Golden, Colorado, U.S.A.
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James M. Borer
James M. Borer
Department of Geology and Geological Engineering, Colorado School of Mines, Golden, Colorado, U.S.A.
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Published:
January 01, 2000

Abstract

Slope and basin-floor channel sand bodies in the Permian Brushy Canyon Formation comprise a depositional profile, along which changes in the facies architecture of a fourfold channelform hierarchy are compared. Channel complexes form sand bodies with serrated margins consisting of stacked channels that increase in offset basinward. Channels and complexes record “cut,” “fill,” and “spill” phases of bypass and deposition, with channel and over-bank deposition offset in time.

Upper slope siltstones encase the largest channelform sand bodies confined to intraslope depressions. Sediment bypass gives way to deposition down-profile, producing multistory, multilateral, and eventually distributary channel patterns. As complexes widen, “build” phase deposits that precede channelization, and spill-phase overbank deposits, thicken downprofile to equilibrate sandstone volumes inside and outside channels.

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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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