{"id":44039,"date":"2023-09-22T21:01:44","date_gmt":"2023-09-22T21:01:44","guid":{"rendered":"https:\/\/gifex.com\/fr\/?post_type=ficha&#038;p=44039"},"modified":"2023-09-22T21:01:44","modified_gmt":"2023-09-22T21:01:44","slug":"carte-geologique-du-benin","status":"publish","type":"ficha","link":"https:\/\/gifex.com\/fr\/fichier\/carte-geologique-du-benin\/","title":{"rendered":"Carte g\u00e9ologique du B\u00e9nin"},"content":{"rendered":"<p style=\"text-align: center;\"><label style=\"font-size: 15px;\">Carte g\u00e9ologique du B\u00e9nin.<\/label><\/p>\n<p>La g\u00e9ologie du B\u00e9nin en Afrique de l&#8217;Ouest comprend l&#8217;orog\u00e8ne Dahomeyide prot\u00e9rozo\u00efque d&#8217;orientation nord-nord-est au nord et une gamme de roches s\u00e9dimentaires du Cr\u00e9tac\u00e9 \u00e0 l&#8217;Holoc\u00e8ne au sud, s\u00e9par\u00e9es tr\u00e8s \u00e9troitement par la 7\u00e8me latitude. Les d\u00e9p\u00f4ts alluviaux n\u00e9og\u00e8nes s\u2019\u00e9tendent \u00e0 travers la fronti\u00e8re nord-est du B\u00e9nin avec le Niger. Dans les r\u00e9gions du Togo et du B\u00e9nin, les types de roches suivants ont \u00e9t\u00e9 identifi\u00e9s : m\u00e9tagr\u00e8s, schistes, m\u00e9tasilexites, m\u00e9tasiltstones, m\u00e9taconglom\u00e9rats, m\u00e9tatillites, roches ou marbres carbonat\u00e9s, roches ultramafiques, m\u00e9tajaspillites, m\u00e9tah\u00e9matites, quartzites, schistes quartzif\u00e8res, micaschistes, gneiss, migmatites, amphibolites, granites, charnockites, \u00e9clogites, m\u00e9tabasaltes, roches calco-silicates et pyrox\u00e9nites.<\/p>\n<p><strong>G\u00e9ologie \u00e9conomique<\/strong><\/p>\n<p>Au nord-ouest du B\u00e9nin, l&#8217;or est min\u00e9ralis\u00e9 dans des conglom\u00e9rats de quartzite du Groupe du Togo. En plus de l&#8217;exploitation artisanale de l&#8217;or, des mat\u00e9riaux g\u00e9ologiques destin\u00e9s \u00e0 l&#8217;industrie et \u00e0 la construction sont extraits. \u00c0 Goump\u00e8re, du nickel, du cuivre, du chrome et du cobalt ont \u00e9t\u00e9 d\u00e9tect\u00e9s par l&#8217;observation d&#8217;anomalies g\u00e9ochimiques. Par ailleurs, 123 millions de tonnes de calcaire ont \u00e9t\u00e9 observ\u00e9es dans le district de l&#8217;Ou\u00e9m\u00e9 qui pourraient \u00eatre utilis\u00e9es pour la fabrication de ciment et de chaux. Il existe \u00e9galement 33 millions de tonnes de gr\u00e8s disponibles qui pourraient \u00eatre utilis\u00e9es comme ballast. De l&#8217;uranium et du minerai de fer ont \u00e9galement \u00e9t\u00e9 d\u00e9couverts dans la r\u00e9gion.<\/p>\n<p>Le B\u00e9nin extrait du p\u00e9trole brut depuis les ann\u00e9es 1990, dont la majorit\u00e9 provient du champ Seme. L&#8217;exploration terrestre se poursuit. Il existe environ 1,09 Mt de p\u00e9trole brut et 1,1 milliard de m<sup>3<\/sup> de gaz naturel.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Carte g\u00e9ologique du B\u00e9nin. La g\u00e9ologie du B\u00e9nin en Afrique de l&#8217;Ouest comprend l&#8217;orog\u00e8ne Dahomeyide prot\u00e9rozo\u00efque d&#8217;orientation nord-nord-est au nord et une &#8230;<\/p>\n","protected":false},"author":1,"featured_media":44040,"template":"","categoria_ficha":[193],"class_list":["post-44039","ficha","type-ficha","status-publish","has-post-thumbnail","hentry","categoria_ficha-cartes-du-benin"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Carte g\u00e9ologique du B\u00e9nin - Gifex<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/gifex.com\/fr\/fichier\/carte-geologique-du-benin\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Carte g\u00e9ologique du B\u00e9nin - Gifex\" \/>\n<meta property=\"og:description\" content=\"Carte g\u00e9ologique du B\u00e9nin. 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