Stratigraphy and Petrographyof Mafic Rocks from the Western Part of the Mesorif Sub-Domain (External Rif, Morocco)

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Stratigraphy and Petrographyof Mafic Rocks from the Western Part of the Mesorif Sub-Domain (External Rif, Morocco)

Journal Title: International Journal of Contemporary Research and Review - Year 2017, Vol 8, Issue 10

Abstract

The Rif-Betic Cordillera is atightly arcuate, oroclinal mountain belt along the westernedge of the Alpine Peri-Mediterranean Orogen, it extends for ~2000 km from the Strait of Gibraltar inthe West to Calabria and the Southern Apennines in theEast. It developed as a result of the convergence andcollision between the Eurasian and African plates in theMiocene. Therecent discovery of a suture zone with oceanic rocks in its central and eastern parts suggests that the external zone of the Rif Belt (Mesorif and Prerif Units) may include ophioliticunits. In this paper,we shed light for the first time on petrographic and stratigraphic characteristics of the mafic rocksthat appear in the western part of the Mesorif suture zoneas well as the Prerif sub-domain. These latter are represented by gabbro with a sub-ophitic to ophitic texture showing simple mineralogy made up of abundant euhedral to subhedral plagioclase, subhedral to anhedralclinopyroxene crystals that can be very altered and totally replaced by chlorite epidote and opaques, and less abundant olivine. Alteration phases include chlorite epidote and tremolites

Authors and Affiliations

A. Rafai1, M. Raji1

Keywords

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EP ID EP316003
DOI 10.15520/ijcrr/2017/8/10/333
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