A tectonic interpretation of “Eburnean terrane” outliers in the Reguibat Shield, Mauritania |
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| Authors: | DI Schofield MR Gillespie |
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| Institution: | aBritish Geological Survey, Kingsley Dunham Centre, Nottingham NG12 5GG, UK;bBritish Geological Survey, Murchison House, West Mains Road, Edinburgh EH9 3LA, UK |
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| Abstract: | The Reguibat Shield comprises a western “Archaean terrane” and eastern “Eburnean terrane” juxtaposed during the early Palaeoproterozoic Eburnean Orogeny. Metasedimentary rocks of probable Palaeoproterozoic age are preserved as flat-lying klippen (Kediat Ijil and Guelb Zednes) and steep imbricate zones (El Mahaoudat range and Sfariat Belt). These are interpreted to record a phase of thrust tectonics that emplaced a continental margin succession onto a composite Archaean foreland prior to ca. 2.06 Ga sinistral transcurrent deformation. Together, these events reflect partitioned Eburnean transpression. |
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| Keywords: | Reguibat Shield Mauritania Eburnean Orogeny Thrust tectonics |
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