{"id":5077,"date":"2019-10-12T10:46:45","date_gmt":"2019-10-12T10:46:45","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/bardintzeff\/?p=5077"},"modified":"2019-10-12T10:57:09","modified_gmt":"2019-10-12T10:57:09","slug":"filons-volcaniques-a-hama-koussou-cameroun","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2019\/10\/12\/filons-volcaniques-a-hama-koussou-cameroun\/","title":{"rendered":"Filons volcaniques \u00e0 Hama Koussou, Cameroun"},"content":{"rendered":"<p>Un article concernant un r\u00e9seau de dykes (filons volcaniques) dans la r\u00e9gion de Hama Koussou dans le nord du Cameroun vient de para\u00eetre dans la revue \u00ab\u00a0Journal of Geography, Environment and Earth Science International \u00bb\u00a0:<\/p>\n<p>Fagny Mefire A., Bardintzeff J.M., Nkouandou O.F., Lika Gbeleng T.A. et Ngougoure Mouansie S. (2019) &#8211; Petrology and geochemistry of Hama Koussou dolerite dyke swarms (North Cameroon, Central Africa). Journal of Geography, Environment and Earth Science International, 23, 3, 1-19, 51594.<\/p>\n<p>On appelle \u00ab\u00a0dyke\u00a0\u00bb un filon volcanique plus ou moins vertical (voir mon blog des 4\/1\/2014, 6\/6\/2015, 11\/6\/2015). Un r\u00e9seau similaire avait \u00e9t\u00e9 d\u00e9crit dans la r\u00e9gion de Mongo au Tchad, par la m\u00eame \u00e9quipe d\u2019auteurs (voir mon blog du 3\/6\/2017).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-5080\" src=\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2019\/10\/Hama_Koussou.Fig3A.jpg.recadre-450x371.jpg\" alt=\"\" width=\"450\" height=\"371\" srcset=\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2019\/10\/Hama_Koussou.Fig3A.jpg.recadre-450x371.jpg 450w, https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2019\/10\/Hama_Koussou.Fig3A.jpg.recadre.jpg 706w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/p>\n<p>Un dyke \u00ab\u00a0basaltique\u00a0\u00bb (dol\u00e9rite) dans la savane de la r\u00e9gion de Hama Koussou (Nord Cameroun).<\/p>\n<p>Ces dykes peuvent avoir jusqu\u2019\u00e0 12 m\u00e8tres de large\u00a0! Les roches pr\u00e9sentent une structure microgrenue, dol\u00e9ritique (cristaux de tailles diff\u00e9rentes), typique des filons d\u2019alimentation. Leurs compositions chimiques vont des basaltes aux trachyand\u00e9sites basaltiques jusqu\u2019aux trachyand\u00e9sites (SiO<sub>2<\/sub> compris entre 46,5 to 56 %).<\/p>\n<p><!--more--><\/p>\n<p>Pour consulter cette publication :<\/p>\n<p><a href=\"http:\/\/www.journaljgeesi.com\/index.php\/JGEESI\/article\/view\/30170\">http:\/\/www.journaljgeesi.com\/index.php\/JGEESI\/article\/view\/30170<\/a><\/p>\n<p>(le pdf de l\u2019article peut \u00eatre facilement et gratuitement t\u00e9l\u00e9charg\u00e9)<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>Un article concernant un r\u00e9seau de dykes (filons volcaniques) dans la r\u00e9gion de Hama Koussou dans le nord du Cameroun vient de para\u00eetre dans la revue \u00ab\u00a0Journal of Geography, Environment and Earth Science International \u00bb\u00a0: Fagny Mefire A., Bardintzeff J.M., Nkouandou O.F., Lika Gbeleng T.A. et Ngougoure Mouansie S. (2019) &#8211; Petrology and geochemistry of &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2019\/10\/12\/filons-volcaniques-a-hama-koussou-cameroun\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Filons volcaniques \u00e0 Hama Koussou, Cameroun<\/span>  <span class=\"meta-nav\">&rarr;<\/span><\/a><!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[6],"tags":[21,852,85,853,180,854,855,1730,1731,1732,860,864],"class_list":["post-5077","post","type-post","status-publish","format-standard","hentry","category-actualites","tag-bardintzeff","tag-basalte","tag-cameroun","tag-dolerite","tag-dyke","tag-fagny-mefire","tag-filon","tag-hama-koussou","tag-lika-gbeleng","tag-ngougoure-mouansie","tag-nkouandou","tag-trachyandesite"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Filons volcaniques \u00e0 Hama Koussou, Cameroun, par Jacques-Marie Bardintzeff<\/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:\/\/blogs.futura-sciences.com\/bardintzeff\/2019\/10\/12\/filons-volcaniques-a-hama-koussou-cameroun\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Filons volcaniques \u00e0 Hama Koussou, Cameroun, par Jacques-Marie Bardintzeff\" \/>\n<meta property=\"og:description\" content=\"Un article concernant un r\u00e9seau de dykes (filons volcaniques) dans la r\u00e9gion de Hama Koussou dans le nord du Cameroun vient de para\u00eetre dans la revue \u00ab\u00a0Journal of Geography, Environment and Earth Science International \u00bb\u00a0: Fagny Mefire A., Bardintzeff J.M., Nkouandou O.F., Lika Gbeleng T.A. et Ngougoure Mouansie S. 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