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| Denele, Y.; Leroy, S.; Pelleter, Ewan; Pik, R.; Talbot, J-y.; Khanbari, K.. |
| The Socotra Island belongs to the southern rifted margin of the Gulf of Aden and occupied in Neoproterozoic times a key position to constrain the age and the nature of the largely hidden Neoproterozoic rocks of the Arabian plate. Our integrated field, petrographic, geochemical and geochronological study in the Neoproterozoic rocks recognises three main successive events: (a) high-temperature ductile deformation and metamorphism forming probably in a compressive or transpressive regime; (b) mafic to intermediate intrusions as vertical sheets, kilometre-scale gabbro laccoliths, mafic dike swarm and lavas which present mainly a depleted arc signature with some evidences of evolution from an enriched-arc signature; (c) felsic intrusions mainly composed of... |
| Tipo: Text |
Palavras-chave: Neoproterozoic; East African-Antartic Orogen; Arabian-Nubian shield; Socotra Island; Andean-type arc; Back-arc basin. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00090/20131/17839.pdf |
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