Granitoides Neoproterozoicos asociados al complejo ofiolítico de Bou-Azzer (Anti-Atlas, Marruecos)Nuevas dataciones SHRIMP, geoquímica e isotopos Sr-Nd.
- M. Ikenne 1
- M. Souhassou 1
- B. Cousens 2
- P. Montero 3
- E.H. Beraaouz 1
- F. Bea 3
- F. Haissen 4
- A.H. Karfal 5
- S. Ilmen 5
- S. Belkacim 1
- A. Toummite 6
- F. Askour 1
- L. Maacha 5
- M. Zouhair 5
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1
Université Ibn Zohr
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- 2 Carleton University, Canada
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3
Universidad de Granada
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4
Université Hassan II de Casablanca
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- 5 MANAGEM Group
- 6 Université Moulay Ismaïl
ISSN: 1576-5172
Año de publicación: 2021
Título del ejemplar: X Congreso Geológico de España
Número: 18
Páginas: 431
Tipo: Artículo
Otras publicaciones en: Geotemas (Madrid)
Resumen
Various syntectonic granitoid bodies intrude the Neoproterozoic ophiolitic complex of Bou Azzer, namely, the quartzdiorites of Ousdrate; Ait Hmane; Bou Azzer; Bou Izbane, Ait Abdellah and the post-tectonic granodiorite of Bleida. New SHRIMP U-Pb data on zircons confirm the presence of a syntectonic magmatic episode in Bou-Azzer inlier between 640 and 660 Ma, while the Bleida post-tectonic granodiorite (559±4 Ma) can be related to the LIP of the post-collisional volcano-plutonic complex of the Ouarzazate Group. New geochemical data confirm the high-K calc-alkaline features and the adakitic affinity previously proposed while new Sr and Nd isotopic data indicate the juvenile origin of this magmatism. The geodynamic con- text of the genesis and emplacement of these granitoids can be discussed using this new data in the frame of models recently proposed for the Panafrican events the Central part of Anti-Atlas.