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Book Chapter

Late Cenomanian-Early Turonian Shelf Ramp, Niger, West Africa

By
A. F. Pascal
A. F. Pascal
Centre des Sciences de la Terre, U.R.A.-C.N.R.S. Universite de Bourgogne Dijon, France
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B. J. Mathey
B. J. Mathey
Centre des Sciences de la Terre, U.R.A.-C.N.R.S. Universite de Bourgogne Dijon, France
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K. Alzouma
K. Alzouma
Laboratoire de Geologie Universite de Niamey Niamey, Niger
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J. Lang
J. Lang
Centre des Sciences de la Terre, U.R.A.-C.N.R.S. Universite de Bourgogne Dijon, France
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C. Meister
C. Meister
Museum d'Histoire Naturelle Genève, Switzerland
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Published:
January 01, 1993

Abstract

Name: Iullemmeden and northern Chad shelf ramp, Niger

Authors: A. F. Pascal, B. J. Mathey, K. Alzouma, J. Lang, and C. Meister

Location: From 3° to 13° 30' west longitude and 14° to 20° north latitude, Iullemmeden and northern Chad basins, Niger, West Africa

Geologic time interval: Early Late Cretaceous (late Cenomanian-early Turonian)

Tectonic-sedimentary setting: Intracratonic basins

Basin type: Epeiric shelf

Paleoclimate: Humid, high rainfall regime

Platform type: Homoclinal ramp

Platform geometry: From 20 to about 100 m thick; approximately 600 km wide and 1000 km long

Facies and fossils: Mudshales, with minor amount of fossiliferous and sandy to silty limestones; bivalves (mainly oysters), ammonites, gastropods, echinids, nautiloids, benthic and planktonic foraminifers, planktonic crinoids, trace fossils

Systems tracts: Trangressive systems tracts and highstand systems tracts

Stacking patterns: Retrogradational to progradational lenticular parasequence sets

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Contents

AAPG Memoir

Cretaceous Carbonate Platforms

J. A. Toni Simo
J. A. Toni Simo
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Robert W. Scott
Robert W. Scott
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Jean-Pierre Masse
Jean-Pierre Masse
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American Association of Petroleum Geologists
Volume
56
ISBN electronic:
9781629810973
Publication date:
January 01, 1993

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