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The Beacon Channel: A Newly Recognized Architectural Type in the Brushy Canyon Formation, Texas, USA

By
R. T Beaubouef
R. T Beaubouef
1
ExxonMobil Exploration, Houston, Texas, USA
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C Rossen
C Rossen
2
ExxonMobil Development, Houston, Texas, USA
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R. W. W Lovell
R. W. W Lovell
2
ExxonMobil Development, Houston, Texas, USA
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Published:
January 01, 2008

Abstract

The Brushy Canyon Formation of west Texas and New Mexico is one of the world’s premier outcrops for deep-water systems and has been studied extensively by industry and academia (Zelt and Rossen, 1995; Beaubouef et al., 1999; Gardner and Borer, 2000; Gardner et al., 2003). It represents almost 400 m (1300 ft) of Permian sandstones and siltstones deposited in an intracratonic, marine basin. Outcrops along the escarpments of the Guadalupe and Delaware Mountains provide a unique, oblique dip section through this basin and a natural laboratory for the study of deep-water depositional systems.

The Beacon channel is a newly characterized Brushy Canyon outcrop that offers exceptional 3-D views of a sinuous slope-channel fill offset by a high-angle normal fault. Reconstruction of the channel fill through field mapping reveals a sinuous pattern that can be traced over a distance of approximately 1.5 km (0.9 mi) in the stream-wise direction. The channel fill is approximately 200 m (660 ft) wide and 15 m (49 ft) thick and contains thickly bedded, medium- to fine-grained sandstones. It is flanked by extensive, thinly bedded, fine-grained facies that can be traced for 1–2 km (0.6–1.2 mi) away from the channel fill. The cross sectional profile of the channel is asymmetric and hanging-wall and footwall exposures exhibit opposing cut-bank to inner-bend relationships.

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Contents

AAPG Studies in Geology

Atlas of Deep-Water Outcrops

Tor H. Nilsen
Tor H. Nilsen
Desceased
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Roger D. Shew
Roger D. Shew
University of North Carolina
Wilmington, North Carolina
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Gary S. Steffens
Gary S. Steffens
Shell International E&P
Houston, Texas
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Joseph R. J. Studlick
Joseph R. J. Studlick
Maersk Oil America Inc.
Houston, Texas
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American Association of Petroleum Geologists
Volume
56
ISBN electronic:
9781629810331
Publication date:
January 01, 2008

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