Data/hora: 18/06/2024 18:13:41

Provedor de dados: | 5
País: | France
Título: | Panafrican events within the Adrar Souttouf Massif (Moroccan Mauritanides).
Autores: | Villeneuve, Michel; Bellon, Hervé; El Archi, A; Sahabi, M; Rehault, Jean Pierre; Olivet, Jean-louis; Aghzer, A.
Data: | 2006-05
Ano: | 2006
Palavras-chave: | Radiometric datations; Hercynian; Panafrican; Mauritanian belt; Sahara; West Africa; Datations radiochronologiques; Hercynien; Panafricain; Mauritanides; Sahara; Afrique de l'Ouest.
Resumo: | The Adrar Souttouf belt (Western Sahara) lies in the northern part of the Mauritanide belt and was considered as a part of the Hercynian Mauritanian-Appalachian belt. Recently the presence of a Panafrican protolith (595 Ma) was evidenced by the age of inherited zircons from an eclogitic unit and led to consider complex Panafrican events included in the Hercynian belt, as in the central and southern Mauritanide belt. Our new field survey completed by ten K-Ar dating (whole rocks and separate minerals) confirmed that multiphased Panafrican formations outcrop within the center of the Adrar Souttouf massif. Diverse events ranged from ca. 1000 to 500 Ma, some of them being indicative of an oceanic type environment and metamorphism. The 1000 Ma metamorphic event is recorded for the first time in the West African craton. A large Hercynian remobilisation is also evidenced.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/2006/publication-1809.pdf

DOI:10.1016/j.crte.2006.02.008

Editor: | Elsevier
Relação: | http://archimer.ifremer.fr/doc/00000/1809/
Formato: | application/pdf
Fonte: | Comptes Rendus Geoscience (1631-0713) (Elsevier), 2006-05 , Vol. 338 , N. 5 , P. 359-367
Fonte: | 2006 Académie des sciences Published by Elsevier SAS