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Precambrian basement character of Yemen and correlations with Saudi Arabia and Somalia
Institution:1. Federal University of Piauí Rua Cicero Duarte, SN, Campus de Picos, Junco, Picos, PI 64600-000, Brazil;2. Federal University of Maranhão, Av. dos Portugueses, SN, Campus do Bacanga, Bacanga, São Luís, MA 65085-580, Brazil;3. Pontifical Catholic University of Rio de Janeiro R. São Vicente, 225, Gávea, Rio de Janeiro, RJ 22453-900, Brazil
Abstract:The Precambrian basement of Yemen occupies a key location in the Pan-African orogen of Gondwana. This paper reviews geological, isotopic and geochronological data and presents new Pb- and Nd-isotope data which help define distinct gneiss terranes within this basement, constraining correlations of these terranes with neighbouring regions of Saudi Arabia and Somalia. Existing whole-rock Pb- and Nd-isotopic data are also summarised. These data should facilitate a more objective assessment of the contribution of the Yemen Precambrian to Cenozoic magmatism associated with the opening of the Red Sea and the Gulf of Aden.
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