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Outcrop 5. NW Margin of the Paine ‘C’ Channel Complex, Silla Syncline

By
W.H. Crane
W.H. Crane
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D.R. Lowe
D.R. Lowe
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Published:
January 01, 2009

Abstract

Outcrop accessibility: easy Outcrop Coordinates: 51.1199°S; 72.9701°W Refer to outcrop 5 on location map

The northwestern portion of the Paine C channel complex (Fig. 5.1A) is easily accessible from the Torres del Paine park highway. Exposures of the Paine C continue throughout the axis of the Silla Syncline from the park highway south to Laguna Negra (Fig. 5.1B). Stratigraphically, the Paine C lies directly above a regionally correlated mass transport complex informally named the Laguna Negra Debris Flow (Fig. 5.1C). The channels within the complex show overall paleoflow toward the southeast and south (Figs. iii.5 and 5.1C). The greatest preserved thickness of channel deposits trends southeast from section 11 to section 21 at the southeastern edge of the syncline (Fig. 5.1B). Given the orientation of the channel complex with respect to paleoflow, the limbs of the Silla Syncline expose a somewhat oblique cross-sectional view of the Paine C channel complex (Fig. 5.1C).

Measured sections along the west limb of the syncline demonstrate that the Paine C thickens progressively to the south by the addition of sediment at the top of the section. A minimum of six stacked channel margins are present between the park highway and Lago Sarmiento Chico (Fig. 5.1C). Channel margins are identified by erosional surfaces which may or may not be mudstone draped and against which sandstones, conglomerates and interbedded sandstone and mudstone units onlap. The approximate locations of

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Contents

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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