Author: Pierre Rat

0000000000274253

AUTHOR

Pierre Rat

Le bassin sédimentaire a phosphates du Togo (Maastrichtien-Eocène): stratigraphie, environnements et évolution

Resume Les observations faites a l'affleurement de la carriere de Tabligbo (materiaux pour la fabrication de klinker) et a celles de Hahotoe et Kpogame (phosphates), ainsi que l'analyse de cinq forages, permettent d'affiner la stratigraphie du bassin cotier togolais: rajeunissement des Calcaires de Tabligbo (Paleocene superieur) et des Argilites feuilletees a palygorskite (Eocene inferieur). Un apercu de l'environnement du gisement de phosphates est propose a travers l'evolution sedimentaire et dynamique du bassin: transgression sur une marge continentale, approfondissement progressif du milieu avec depot et conservation de la matiere organique, phosphates en debut de regression, flechissem…

research product

Le Dogger supérieur calcaire de la Côte dijonnaise et nuitonne et des plateaux du Chatillonnais - Stratigraphie, sédimentologie, paléoenvironnements, pierres de construction et d'ornement d'hier et d'aujourd'hui.

22 pages; National audience

research product

PEPhysical Sciences and Engineering
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LSLife Sciences
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SHSocial Sciences and Humanities
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