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Transgressive–regressive facies cycles in late Cretaceous calciturbidites from the Mauretanian Series, Béni Ider thrust sheet, northwestern External Rif, Morocco: application of the ‘facies tract–facies sequence’ concept

By
Kh. El Kadiri
Kh. El Kadiri
1
Université Abdelmalik Essaadi, Faculté des Sciences, BP 2121, Dép. Géologie, M’Hannech II, 93003 Tetuan, Morocco (e-mail: 1chkadiri@fst.ac.ma)
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K. El Kadiri
K. El Kadiri
2
Université Abdelmalek Essaadi, Faculté des Sciences, BP 2121, Dép. Mathématiques, M’Hannech II, 93003 Tetuan, Morocco
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A. Chalouan
A. Chalouan
3
Université Mohammed V-Agdal, Faculté des Sciences, Av. Ihn Batouta, BP 1014, Dép. Géologie, Agdal, 10000 Rabat, Morocco
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A. Bahmad
A. Bahmad
4
Société Nationale d’Etudes du Détroit de Gibraltar (SNED), 31, r. Al Alaouyines, Rabat, Morocco
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F. Salhi
F. Salhi
5
Université Chouaib Doukali, Faculté des Sciences, Dép. Géologie, El Jadida, Morocco
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H. Liemlahi
H. Liemlahi
1
Université Abdelmalik Essaadi, Faculté des Sciences, BP 2121, Dép. Géologie, M’Hannech II, 93003 Tetuan, Morocco (e-mail: 1chkadiri@fst.ac.ma)
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R. Hlila
R. Hlila
1
Université Abdelmalik Essaadi, Faculté des Sciences, BP 2121, Dép. Géologie, M’Hannech II, 93003 Tetuan, Morocco (e-mail: 1chkadiri@fst.ac.ma)
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Published:
January 01, 2006

Abstract

Late Cretaceous mixed carbonate–siliciclastic, thin-bedded turbidites occur between the two great sandstone packages of the Mauretanian Series (the Tisirène and the Béni Ider sandstone flyschs, of early Cretaceous and late Oligocene–early Burdigalian age, respectively). The application of the facies tract–facies sequence model allows subdivision of the studied calciturbidites into five distinct facies sequences (FS.1-5), which equal five transgressive–regressive facies cycles. These cycles mainly consist of thinning upward calciturbidites, which almost all start with coarse-grained carbonate breccias, and passing upward into a shale-dominated interval. Fe-stained discontinuities, together with sedimentological and ichnological evidence, lead us to assign these two lithological components to a transgressive and a regressive trend, respectively. This result provides new insights into the sequence-stratigraphic interpretation of turbiditic successions.

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Contents

Geological Society, London, Special Publications

Tectonics of the Western Mediterranean and North Africa

G. Moratti
G. Moratti
CNR-Institute of Geosciences and Earth Resources, Italy
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A. Chalouan
A. Chalouan
University of Mohammed V Agdal, Rabat, Morocco
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Geological Society of London
Volume
262
ISBN electronic:
9781862395107
Publication date:
January 01, 2006

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