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Amalgamated Sheet Sandstone, Trois Evêchés, France

By
Simon A. Lomas
Simon A. Lomas
1
Department of Geology and Petroleum Geology, University of Aberdeen, King’s College, Aberdeen, United Kingdom
2
Present address: Baker Atlas, Global Geoscience, Houston, Texas, USA
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Bryan T. Cronin
Bryan T. Cronin
1
Department of Geology and Petroleum Geology, University of Aberdeen, King’s College, Aberdeen, United Kingdom
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Adrian J. Hartley
Adrian J. Hartley
1
Department of Geology and Petroleum Geology, University of Aberdeen, King’s College, Aberdeen, United Kingdom
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Davide Duranti
Davide Duranti
1
Department of Geology and Petroleum Geology, University of Aberdeen, King’s College, Aberdeen, United Kingdom
3
Present address: Task Geoscience Ltd., Aberdeen, United Kingdom
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Published:
January 01, 2008

Abstract

The Grès d’Annot Formation of southeast France and northwest Italy is a thick siliciclastic assemblage of Eocene-Oligocene age, filling in a foreland basin system on the flank of the rising Alpine mountain belt. A range of depositional environments is recorded but most of the Grès d’Annot has been attributed to relatively deep-marine settings. Subsidence resulted primarily from loading by the growing Alpine orogen to the east, but basin-fill sediments were mainly derived from a separate massif (Corsica-Sardinia) to the south. The Grès d’Annot now crops out as series of basin remnants corresponding to sub-basins which were structurally distinct but connected during deposition. Sediment dispersal within the structured basin was strongly influenced by the paleotopography, and hence paleocurrent directions show significant local variations (Figure 1). The Grès d’Annot Formation unconformably overlies (onlaps) tilted calcareous mudrocks (Marnes Bleues) and in turn is overlain by a tectono-sedimentary mélange (Schistes à Blocs) which heralded emplacement of alpine thrust sheets onto the basin-fill. Historically, the Grès d’Annot has been important in the development of turbidite models (e.g., the “Bouma sequence”) and the application of outcrop analogs to understanding hydrocarbon reservoir architecture.

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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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