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The Central Atlantic Magmatic Province (CAMP) in Morocco

Abstract : The Central Atlantic Magmatic Province (CAMP) is a large igneous province (LIP) composed of basic dykes, sills, layered intrusions and lava flows emplaced before Pangea break-up and currently distributed on the four continents surrounding the Atlantic Ocean. One of the oldest, best preserved and most complete sub-provinces of the CAMP is located in Morocco. Geochemical, geochronologic, petrographic and magnetostratigraphic data obtained in previous studies allowed identification of four strato-chemical magmatic units, i.e. the Lower, Intermediate, Upper and Recurrent units. For this study, we completed a detailed sampling of the CAMP in Morocco, from the Anti Atlas in the south to the Meseta in the north. We provide a complete mineralogical, petrologic (major and trace elements on whole-rocks and minerals), geochronologic (40 Ar/ 39 Ar and U-Pb ages) and geochemical set of data (including Sr-Nd-Pb-Os isotope systematics) for basaltic and basaltic-andesitic lava flow piles and for their presumed feeder dykes and sills. Combined with field observations, these data suggest a very rapid (<0Á3 Ma) emplacement of over 95% of the preserved magmatic rocks. In particular, new and previously published data for the Lower to Upper unit samples yielded indistinguishable
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Andrea Marzoli, Hervé Bertrand, Nasrrddine Youbi, Sara Callegaro, Renaud Merle, et al.. The Central Atlantic Magmatic Province (CAMP) in Morocco. Journal of Petrology, Oxford University Press (OUP), 2019, 60 (5), pp.945-996. ⟨10.1093/petrology/egz021⟩. ⟨hal-02405965⟩

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