{"id":41371,"date":"2023-07-03T00:16:35","date_gmt":"2023-07-03T00:16:35","guid":{"rendered":"https:\/\/gifex.com\/fr\/?post_type=ficha&#038;p=41371"},"modified":"2023-07-03T00:16:35","modified_gmt":"2023-07-03T00:16:35","slug":"carte-geologique-de-djibouti","status":"publish","type":"ficha","link":"https:\/\/gifex.com\/fr\/fichier\/carte-geologique-de-djibouti\/","title":{"rendered":"Carte g\u00e9ologique de Djibouti"},"content":{"rendered":"<p style=\"text-align: center;\"><label style=\"font-size: 15px;\">Carte g\u00e9ologique de Djibouti.<\/label><\/p>\n<p>La g\u00e9ologie de Djibouti se compose en grande partie de roches volcaniques du Mioc\u00e8ne \u00e0 l&#8217;Holoc\u00e8ne. Il existe des d\u00e9p\u00f4ts alluviaux plus r\u00e9cents avec du corail sur la c\u00f4te, ainsi que des s\u00e9diments c\u00e9nozo\u00efques. Les gr\u00e8s Amba Aradam de la p\u00e9riode jurassique se trouvent dans le sud-est du pays.<\/p>\n<figure id=\"attachment_41374\" aria-describedby=\"caption-attachment-41374\" style=\"width: 360px\" class=\"wp-caption alignright\"><a href=\"https:\/\/gifex.com\/fr\/wp-content\/uploads\/41371\/Carte-geologique-de-la-cote-francaise-des-Somalis-1946.jpg\" target=\"_blank\" rel=\"noopener\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-41374\" title=\"Carte g\u00e9ologique de la c\u00f4te fran\u00e7aise des Somalis 1946.\" src=\"https:\/\/gifex.com\/fr\/wp-content\/uploads\/41371\/Carte-geologique-de-la-cote-francaise-des-Somalis-1946-296x300.jpg\" alt=\"Carte g\u00e9ologique de la c\u00f4te fran\u00e7aise des Somalis 1946.\" width=\"360\" height=\"365\" srcset=\"https:\/\/gifex.com\/fr\/wp-content\/uploads\/41371\/Carte-geologique-de-la-cote-francaise-des-Somalis-1946-296x300.jpg 296w, https:\/\/gifex.com\/fr\/wp-content\/uploads\/41371\/Carte-geologique-de-la-cote-francaise-des-Somalis-1946-1010x1024.jpg 1010w, https:\/\/gifex.com\/fr\/wp-content\/uploads\/41371\/Carte-geologique-de-la-cote-francaise-des-Somalis-1946-768x779.jpg 768w, https:\/\/gifex.com\/fr\/wp-content\/uploads\/41371\/Carte-geologique-de-la-cote-francaise-des-Somalis-1946-1515x1536.jpg 1515w, https:\/\/gifex.com\/fr\/wp-content\/uploads\/41371\/Carte-geologique-de-la-cote-francaise-des-Somalis-1946-2020x2048.jpg 2020w, https:\/\/gifex.com\/fr\/wp-content\/uploads\/41371\/Carte-geologique-de-la-cote-francaise-des-Somalis-1946-300x304.jpg 300w, https:\/\/gifex.com\/fr\/wp-content\/uploads\/41371\/Carte-geologique-de-la-cote-francaise-des-Somalis-1946-1578x1600.jpg 1578w\" sizes=\"(max-width: 360px) 100vw, 360px\" \/><\/a><figcaption id=\"caption-attachment-41374\" class=\"wp-caption-text\"><label style=\"font-size: 15px;\">Carte g\u00e9ologique de la c\u00f4te fran\u00e7aise des Somalis 1946.<\/label><\/figcaption><\/figure>\n<p>Le pays a \u00e9t\u00e9 form\u00e9 par la collision des tendances tectoniques g\u00e9n\u00e9rales du rift est-africain. Le rift a g\u00e9n\u00e9r\u00e9 un relief fragment\u00e9 compos\u00e9 de blocs \u00e9lev\u00e9s et de zones d&#8217;affaissement, qui cr\u00e9ent des caract\u00e9ristiques g\u00e9ologiques telles que le lac Assal.<\/p>\n<p>Le golfe d&#8217;Aden de la mer Rouge s&#8217;est ouvert pendant les \u00e9poques du Plioc\u00e8ne et du d\u00e9but du Pl\u00e9istoc\u00e8ne. A ces \u00e9poques, le Danakil Horst a connu un soul\u00e8vement de son prolongement sud. L&#8217;analyse de la tectonique des plaques dans la r\u00e9gion de la triple jonction montre des taux d&#8217;extension entre 1 mm et 3 mm par an. Les \u00e9picentres des tremblements de terre sont concentr\u00e9s le long des blocs de failles p\u00e9riph\u00e9riques o\u00f9 le rift \u00e9thiopien touche la mer Rouge et le golfe d&#8217;Aden.<\/p>\n<p>Une enqu\u00eate d\u00e9taill\u00e9e sur les g\u00e9osites disponibles \u00e0 Djibouti n&#8217;a pas encore \u00e9t\u00e9 r\u00e9alis\u00e9e, mais la triple jonction situ\u00e9e dans le syst\u00e8me de rift est-africain est consid\u00e9r\u00e9e comme pr\u00e9sentant un int\u00e9r\u00eat g\u00e9ologique important.<\/p>\n<p><strong>Impact \u00e9conomique<\/strong><\/p>\n<p>Bien que Djibouti produise des minerais, c&#8217;est une partie insignifiante de son \u00e9conomie. Le sel, disponible gr\u00e2ce \u00e0 l&#8217;\u00e9vaporation solaire, est r\u00e9colt\u00e9 au lac Assal et contribue \u00e0 faire du pays le dixi\u00e8me producteur de sel d&#8217;Afrique. Le calcaire et la chaux calcin\u00e9e sont \u00e9galement actuellement extraits \u00e0 Djibouti. D&#8217;autres candidats miniers comprennent le marbre, le granit, le gypse, la diatomite et la perlite.<\/p>\n<p>Le p\u00e9trole pourrait \u00eatre extrait \u00e0 l&#8217;avenir; actuellement des travaux exploratoires sont en cours.<\/p>\n<p>En plus de l&#8217;exploitation mini\u00e8re, la possibilit\u00e9 d&#8217;utiliser l&#8217;\u00e9nergie g\u00e9othermique est actuellement \u00e0 l&#8217;\u00e9tude.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Carte g\u00e9ologique de Djibouti. La g\u00e9ologie de Djibouti se compose en grande partie de roches volcaniques du Mioc\u00e8ne \u00e0 l&#8217;Holoc\u00e8ne. Il existe des d\u00e9p\u00f4ts alluviaux<\/p>\n","protected":false},"author":1,"featured_media":41373,"template":"","categoria_ficha":[241],"class_list":["post-41371","ficha","type-ficha","status-publish","has-post-thumbnail","hentry","categoria_ficha-cartes-de-djibouti"],"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 de Djibouti - 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-de-djibouti\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Carte g\u00e9ologique de Djibouti - Gifex\" \/>\n<meta property=\"og:description\" content=\"Carte g\u00e9ologique de Djibouti. 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