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Outcrop 15. Transition from Deep-Water to Shelf Edge Deposits,Tres Pasos and Dorotea Formations, Cerro Escondido

By
J.A. Covault
J.A. Covault
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B.W. Romans
B.W. Romans
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S.A. Graham
S.A. Graham
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Published:
January 01, 2009

Abstract

Outcrop accessibility: extremely difficult Outcrop Coordinates: 50.7309°S, 72.6324°W Refer to outcrop 15 on location map

The stratigraphic section at Cerro Escondido contains the most complete exposure of the Dorotea Formation in the Ultima Esperanza District (Fig. 15.1). Cerro Escondido is located south of the Argentina-Chile border on an anticline between the Rio de las Chinas and the Rio Zamora (refer to outcrop location map). The contact between the Tres Pasos and Dorotea formations had not been formally mapped at Cerro Escondido, and we define it as the first contact between turbidites of the Tres Pasos Formation and overlying shallow-marine hummocky-cross stratified sandstone of the Dorotea Formation (Fig. 15.1). Greater than 300 m of stratigraphy are exposed across >800 m of the Cerro Escondido outcrop (Fig. 15.1). Two stratigraphic sections were recorded at cm-scale resolution (295 m thick in the east and 197 m thick in the west; Fig. 15.1C).

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SEPM Field Trip Guidebook

Stratigraphic Evolution of Deep-Water Architecture: Examples of controls and depositional styles from the Magallanes Basin, southern Chile

Andrea Fildani
Andrea Fildani
1.
Chevron Energy Technology Company, USA
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Stephen M. Hubbard
Stephen M. Hubbard
2.
Department of Geoscience, University of Calgary, Canada
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Brian W. Romans
Brian W. Romans
1.
Chevron Energy Technology Company, USA
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J.A. Covault
J.A. Covault
1.
Chevron Energy Technology Company, USA
3.
Department of Geological and Environmental Sciences, Stanford University, USA
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W.H. Crane
W.H. Crane
1.
Chevron Energy Technology Company, USA
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A. Bernhardt
A. Bernhardt
3.
Department of Geological and Environmental Sciences, Stanford University, USA
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Z.R. Jobe
Z.R. Jobe
3.
Department of Geological and Environmental Sciences, Stanford University, USA
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D.A. Armitage
D.A. Armitage
3.
Department of Geological and Environmental Sciences, Stanford University, USA
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J.C. Fosdick
J.C. Fosdick
3.
Department of Geological and Environmental Sciences, Stanford University, USA
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M.R. Shultz
M.R. Shultz
1.
Chevron Energy Technology Company, USA
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J. Clark
J. Clark
1.
Chevron Energy Technology Company, USA
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D.R. Lowe
D.R. Lowe
3.
Department of Geological and Environmental Sciences, Stanford University, USA
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S.A. Graham
S.A. Graham
3.
Department of Geological and Environmental Sciences, Stanford University, USA
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SEPM Society for Sedimentary Geology
Volume
10
ISBN electronic:
9781565762923
Publication date:
January 01, 2009

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