{"id":890,"date":"2015-10-27T19:44:49","date_gmt":"2015-10-27T18:44:49","guid":{"rendered":"https:\/\/www.ccgm.org\/produit\/carte-geologique-de-la-republique-de-djibouti\/"},"modified":"2025-06-27T20:01:43","modified_gmt":"2025-06-27T18:01:43","slug":"carte-geologique-de-la-republique-de-djibouti","status":"publish","type":"product","link":"https:\/\/www.ccgm.org\/es\/product\/mapa-geologico-de-la-republica-de-jibuti-2\/","title":{"rendered":"Mapa geol\u00f3gico de la Rep\u00fablica de Yibuti"},"content":{"rendered":"<p><strong>Mapa geol\u00f3gico de la Rep\u00fablica de Yibuti<\/strong><\/p>\n<p>A pesar de su modesto tama\u00f1o, cercano al de Breta\u00f1a, la Rep\u00fablica de Yibuti tiene el privilegio de albergar uno de los yacimientos geol\u00f3gicos m\u00e1s emblem\u00e1ticos del mundo: el <strong>Grieta de Asal<\/strong>. La Fosa de Asal, con sus taludes de lava bas\u00e1ltica cortados en franjas por redes de fallas, tiene un fondo 150 m por debajo del nivel del mar de Ghoubbet. Es el resultado del estiramiento y adelgazamiento de la litosfera continental, frente a la grieta oce\u00e1nica de Ad\u00e9n que separa las placas ar\u00e1biga y somal\u00ed. Estos procesos geodin\u00e1micos de primer orden, pr\u00f3ximos a la fase de desgarramiento continental, est\u00e1n excepcionalmente expuestos en Yibuti, pero, parad\u00f3jicamente, ning\u00fan documento cartogr\u00e1fico ha dado cuenta hasta ahora de su contexto geol\u00f3gico regional.<\/p>\n<p>Esta laguna ha sido colmada ahora por la <em>Mapa geol\u00f3gico de la Rep\u00fablica de Yibuti a escala 1:200 000<\/em> (editado por la Comisi\u00f3n del Mapa Geol\u00f3gico del Mundo) establecido entre 2011 y 2015 bajo la coordinaci\u00f3n de Bernard Le Gall (UMR\/CNRS 6538) y en estrecha colaboraci\u00f3n entre cient\u00edficos del laboratorio \"Domaines Oc\u00e9aniques\" de Brest (Ren\u00e9 Maury y Jo\u00ebl Rolet) y el CERD de Yibuti.<\/p>\n<p>S\u00edntesis de diez mapas 1:100.000 existentes, combinada con datos reci\u00e9n adquiridos sobre el terreno e im\u00e1genes de sat\u00e9lite, este original documento destaca los principales componentes de la <strong>Sistema Afar<\/strong> en Yibuti, a saber :<\/p>\n<p>- la preponderancia de <strong>volcanismo de sinrift<\/strong> cuyas lavas b\u00e1sicas y \u00e1cidas, emitidas desde hace unos 30 millones de a\u00f1os (Ma) en el contexto de la pluma del manto de Afar, cubren m\u00e1s de 70 % del territorio de Yibuti.<\/p>\n<p>- la importancia de las redes de fallas muy j\u00f3venes (&lt; 3 Ma), marcadoras de la extensi\u00f3n de la corteza y responsables de una morfolog\u00eda de bloques inclinados y grandes artesas de subsidencia, como la de Asal.<\/p>\n<p>- la heterogeneidad de los dep\u00f3sitos sedimentarios, ya sean de origen continental, como el relleno terr\u00edgeno de las zanjas, o marino, como las evaporitas de Asal y las calizas arrecifales que bordean el golfo de Tadjourah.<\/p>\n<p>- la existencia de un lecho rocoso anterior al rift, representado por las areniscas y calizas mesozoicas del sector de Ali Sabieh. Su estructura antiforme se atribuye a la intrusi\u00f3n de un laccolito en la fase inicial del rifting.<\/p>\n<p>- La geolog\u00eda marina de Ghoubbet, el golfo de Tadjourah y los accesos a Bab el Mandeb incorpora las redes de fallas y los volcanes submarinos identificados en los registros batim\u00e9tricos disponibles.<\/p>\n<p><strong>Mapa geol\u00f3gico de la Rep\u00fablica de Yibuti<\/strong><\/p>","protected":false},"excerpt":{"rendered":"<p><strong>Mapa geol\u00f3gico de la Rep\u00fablica de Yibuti<\/strong><\/p>\n<p>1\u00aa edici\u00f3n<br \/>\nProyecci\u00f3n: UTM, zona 38N, datum WGS 84<br \/>\nEscala: 1\/200 000<br \/>\nAutores: Bernard Le Gall, Mohamed Ahmed Daoud, Ren\u00e9 Maury, Fran\u00e7oise Gasse, Jo\u00ebl Rolet, Mohamed Jalludin, Antoine-Marie Caminiti, Nima Moussa<br \/>\nCentro de Estudios e Investigaci\u00f3n de Yibuti (CERD) y CCGM 2015<\/p>","protected":false},"featured_media":887,"comment_status":"closed","ping_status":"closed","template":"","meta":{"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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