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Book Chapter

Tectonic wedge escape in the southwestern front of the Rif Cordillera (Morocco)

By
A. Chalouan
A. Chalouan
Département des Sciences de la Terre, Faculté des Sciences, Université Mohammed V-Agdal, BP 1014, Rabat, Morocco (e-mail: chalouan@fsr.ac.ma)
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J. Galindo-ZaldíVar
J. Galindo-ZaldíVar
Departamento de Geodinámica, Universidad de Granada, 18071, Granada, Spain
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M. Akil
M. Akil
Département des Sciences de la Terre, Faculté des Sciences, Université Mohammed V-Agdal, BP 1014, Rabat, Morocco (e-mail: chalouan@fsr.ac.ma)
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C. Marín
C. Marín
Instituto Geológico y Minero de España, Río Rosas 23, 28003 Madrid, Spain
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A. Chabli
A. Chabli
Département des Sciences de la Terre, Faculté des Sciences, Université Mohammed V-Agdal, BP 1014, Rabat, Morocco (e-mail: chalouan@fsr.ac.ma)
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P. Ruano
P. Ruano
Institute for Crustal Studies, University of California, Santa Barbara, CA 93106-1100, USA
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K. Bargach
K. Bargach
Département des Sciences de la Terre, Faculté des Sciences, Université Mohammed V-Agdal, BP 1014, Rabat, Morocco (e-mail: chalouan@fsr.ac.ma)
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C. Sanz De Galdeano
C. Sanz De Galdeano
Instituto Andaluz de Ciencias de la Tierra, CSIC-Universidad de Granada,18071, Granada, Spain
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M. Benmakhlouf
M. Benmakhlouf
Departamento de Geodinámica, Universidad de Granada, 18071, Granada, SpainDépartement de Géologie, Facultédes Sciences de Tétouan, UniversitéAbdelmalek Essaadi,Tétouan, Morocco
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M. Ahmamou
M. Ahmamou
Département des Sciences de la Terre, Faculté des Sciences, Université Mohammed V-Agdal, BP 1014, Rabat, Morocco (e-mail: chalouan@fsr.ac.ma)
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L. Gourari
L. Gourari
Département de Géologie, Facultédes Sciences Dhar el-Mashraz, Universit éSidi MohamedBen Abdellah, Fès, Morocco
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Published:
January 01, 2006

Abstract

The Rif Cordillera is a part of the Alpine orogenic arc in the Western Mediterranean, which was developed by the interaction of the westward motion of the Alboran Domain between the converging Eurasian and African plates. The Prerif Ridges, located along the southwestern front of the Rif, are south-vergent folds that are in places associated with faults affecting Jurassic to Quaternary sedimentary rocks and slope breccias that evidence the deformations that were active over the Neogene–Quatemary period. The different southward or southwestward displacement of each Prerif Ridge is related to the development of frontal and lateral ramps, which may or may not reach the surface. Oblique shortening may be explained by southwestward escape of large tectonic wedges, bounded by large strike-slip faults: the North-Middle Atlas fault which extends northward into the Alboran Sea, the Fez–Tissa–Taïneste fault, the Bou Draa–Sidi Fili fault, the Jebha fault and the Fahies fault. The relative displacement of these tectonic wedges toward the SW may explain the NNE-SSW to ENE–WSW compression observed in the Rif front and in the northern part of its Meseta–Atlas foreland.

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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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