Early Permian age of granite pebbles from an Eocene or Oligocene conglomerate of the Internal Rif belt (Alboran domain, Morocco): hypothesis on their origin - Université Clermont Auvergne Accéder directement au contenu
Article Dans Une Revue Bulletin de la Société Géologique de France Année : 2018

Early Permian age of granite pebbles from an Eocene or Oligocene conglomerate of the Internal Rif belt (Alboran domain, Morocco): hypothesis on their origin

Résumé

Granite pebbles from an Eocene or Oligocene conglomerate lying on a Ghomaride nappe of the Internal Zones of the Rif belt (Alboran domain, Morocco) have been dated by U/Pb on zircon at 281 Ma. No granite pluton being known in the Rif belt nor in the neighbouring Betic Cordillera, the origin of these calcalkaline Kungurian (end of the Early Permian) granites is discussed. A provenance from a nearby unit presently drowned in the Alboran sea is likely. Comparisons with other circum-Mediterranean domains show that this late plutonism characterizes an original domain in the Variscan orogen.

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Géochimie
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hal-01878570 , version 1 (20-01-2021)

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Philippe Olivier, Jean-Louis Paquette. Early Permian age of granite pebbles from an Eocene or Oligocene conglomerate of the Internal Rif belt (Alboran domain, Morocco): hypothesis on their origin. Bulletin de la Société Géologique de France, 2018, 189 (3), ⟨10.1051/bsgf/2018012⟩. ⟨hal-01878570⟩
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