Découverte d'un diatrème de kimberlite diamantifère à Séguéla en Côte-d'Ivoire |
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| Authors: | André Pouclet Marc Allialy Bertin Daouda-Yao Botty Esso |
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| Institution: | 1. Institut des sciences de la Terre d''Orléans, UMR 6113, université d''Orléans, 45067 Orléans cedex 2, France;2. Direction de la Géologie, ministère des Mines et de l''Énergie, Abidjan, Côte d''Ivoire |
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| Abstract: | The Séguéla area in Ivory Coast is known for its diamond-bearing field related to dykes of kimberlite and lamproite. These dykes, devoid of any deformation and metamorphism, crosscut the Birimian formations. Their N 170° orientation is controlled by the tectonized contact between the Archean and the Paleoproterozoic shields of the West-African craton. Discovery of a diatreme, with its pipe breccias and well-preserved maar sediments, below the present-day colluvia, attests for the probable recent geological age (Cretaceous?) of the kimberlitic activity. To cite this article: A. Pouclet et al., C. R. Geoscience 336 (2004). |
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| Keywords: | kimberlite diamant diatrème Côte-d'Ivoire kimberlite diamond diatreme Ivory Coast |
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