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(Article of periodic en Anglais - 2011)

Document title

Oligo-Miocene exhumation of the Beni-Bousera peridotite through a lithosphere-scale extensional shear zone

Authors(s) and Affiliation(s)

AFIRI A. (1 2) ; GUEYDAN F. (1) ; PITRA P. (1) ; ESSAIFI A. (2) ; PRÉCIGOUT J. (3) ;
(1) Géosciences Rennes, Univ. Rennes 1, CNRS UMR 6118, Rennes, FRANCE
(2) Dep. Géologie, Fac. Sciences Semlalia, Marrakech, MAROC
(3) Dep. Structural Geology and Tectonics, ETH, Zürich, SUISSE

Abstract

New structural data and P-T estimates of syn-deformational assemblages within the Beni Bousera peridotites and their crustal envelope are used to explain their Alpine exhumation. The Beni Bousera peridotites occur as thin sheets within high grade crustal units of the lower Sebtides (inner Rif, Morocco) and are composed of weakly deformed spinel lherzolite in the core of the massif and garnet-spinel mylonite at the rim. With these new findings, the AA. reconstruct the deformation history of the Beni Bousera region and the Alboran domain in the framework of the western Mediterranean geodynamics during the last 40 Myrs.

Source

Article of periodic

published at : Geodinamica acta / ISSN 0985-3111

Editor : Taylor & Francis, Abingdon - ROYAUME-UNI (1987)

Millesime : 2011, vol. 24, no1 [pp. 49-60]

Bibliographic references : 78 ref.

Collation : 7 fig., 1 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 21088

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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