Effets thermique et hydrothermal de la coulée de basalte triasico-liasique sur les argiles du bassin d'Argana (Maroc)Thermal and hydrothermal effects of Triassic–Liassic basalt flow deposition on clays (Agana Basin,Morocco) |
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| Authors: | Lahcen Daoudi Jean-Luc Pot de Vin |
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| Institution: | 1. Département de géologie, faculté des sciences et techniques, BP 549, Marrakech, Maroc;2. Université des sciences et technologies de Lille, FRE 2255 CNRS « Sédimentologie et géodynamique », FDR 1818 CNRS « Milieux naturels et anthropisés », UFR Sciences de la terre, 59655 Villeneuve d''Ascq, France |
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| Abstract: | Thermal and hydrothermal effects of Triassic–Liassic basalt flow deposition on sedimentary series of the Argana Basin are responsible for major modifications in detrital clays, until 20 m in depth. It expressed by transformation of detrital smectite to corrensite and moreover to chlorite, and by increasing illite crystallinity. On the 2 m of sediments located immediately under the flow, magnesium-rich hydrothermal fluids have caused precipitation of new mineral phases. To cite this article: L. Daoudi, J.-L. Pot de Vin, C. R. Geoscience 334 (2002) 463–468. |
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| Keywords: | clays basalt Trias–Lias thermal effect Argana Basin Morocco argiles basalte Trias–Lias effet thermique bassin d'Argana Maroc Géomatériaux Minéralogie Geomaterials Mineralogy |
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