Mahmoudi, A. and Bertrand, H. (2007) Geochemical identification of the central Atlantic magmatic province in folded domain, exemplified by the Moroccan Middle Atlas Identification géochimique de la province magmatique de l'Atlantique central en domaine plissé : exemple du Moyen Atlas marocain. Comptes Rendus - Geoscience, 339 (8). pp. 545-552.

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Abstract

We use volcanological and geochemical criteria to assign the deformed magmatic rocks from the anticlinal ridges in the Moroccan Middle Atlas to lava flows of the central Atlantic magmatic province (CAMP), emplaced at the Triassic-Liassic boundary. Despite the disturbance of the original basaltic pile by tectonics, three volcanic units were identified based on immobile elements (Ti, P, Zr, Nb, Y, REE). These units are similar to the lower, intermediate, and upper units of the CAMP in the High Atlas, which suggests a synchronous inception of the volcanic activity in the two regions. The scarcity of the subsequent alkaline intrusions indicates that the magmatic evolution during Mesozoic times in the Middle Atlas cannot be explained by the models derived from the High Atlas. © 2007 Académie des sciences.

Item Type: Article
Uncontrolled Keywords: alkaline rock; basalt; igneous geochemistry; igneous intrusion; lava flow; magmatism; Mesozoic; Triassic; volcanology, Africa; Atlas Mountains; Fes-Boulemane; Middle Atlas; Morocco; North Africa
Subjects: Earth and Planetary Sciences
Divisions: SCIENTIFIC PRODUCTION > Earth and Planetary Sciences
Depositing User: Administrateur Eprints Administrateur Eprints
Last Modified: 31 Jan 2020 15:46
URI: http://eprints.umi.ac.ma/id/eprint/2947

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