https:\/\/blogs.futura-sciences.com\/bardintzeff\/2015\/06\/06\/images-de-volcan-la-vallee-des-dykes\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"Un dyke est un filon d\u2019alimentation d\u2019un volcan, par o\u00f9 transite le liquide magmatique. Puis le liquide se solidifie en roche. Le filon est ensuite d\u00e9gag\u00e9 par l\u2019\u00e9rosion et appara\u00eet dans le paysage. Des dykes spectaculaires sont visibles dans les falaises de Deserta Grande, une des trois \u00eeles Desertas, au sud-est de Mad\u00e8re (voir mon … Continuer la lecture de Les dykes de Deserta Grande<\/span> →<\/span><\/a><\/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":[6,8],"tags":[2958,2959,180,2961,2960,893,586],"class_list":["post-10221","post","type-post","status-publish","format-standard","hentry","category-actualites","category-voyages","tag-deserta-grande","tag-desertas","tag-dyke","tag-faja","tag-iles-desertas","tag-madere","tag-tephra"],"yoast_head":"\nLes dykes de Deserta Grande, 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\/2024\/06\/21\/les-dykes-de-deserta-grande\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Les dykes de Deserta Grande, par Jacques-Marie Bardintzeff\" \/>\n<meta property=\"og:description\" content=\"Un dyke est un filon d\u2019alimentation d\u2019un volcan, par o\u00f9 transite le liquide magmatique. Puis le liquide se solidifie en roche. Le filon est ensuite d\u00e9gag\u00e9 par l\u2019\u00e9rosion et appara\u00eet dans le paysage. Des dykes spectaculaires sont visibles dans les falaises de Deserta Grande, une des trois \u00eeles Desertas, au sud-est de Mad\u00e8re (voir mon … Continuer la lecture de Les dykes de Deserta Grande →\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2024\/06\/21\/les-dykes-de-deserta-grande\/\" \/>\n<meta property=\"og:site_name\" content=\"VOLCANMANIA : le blog de Jacques-Marie BARDINTZEFF, volcanologue\" \/>\n<meta property=\"article:published_time\" content=\"2024-06-21T09:47:27+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-06-21T09:49:14+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2024\/06\/Bardintzeff.20240423_143044.Deserta_Grande.dykeslow.s-450x253.jpg\" \/>\n<meta name=\"author\" content=\"jmbardintzeff\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"jmbardintzeff\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2024\/06\/21\/les-dykes-de-deserta-grande\/\",\"url\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2024\/06\/21\/les-dykes-de-deserta-grande\/\",\"name\":\"Les dykes de Deserta Grande, par Jacques-Marie Bardintzeff\",\"isPartOf\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2024\/06\/21\/les-dykes-de-deserta-grande\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2024\/06\/21\/les-dykes-de-deserta-grande\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2024\/06\/Bardintzeff.20240423_143044.Deserta_Grande.dykeslow.s-450x253.jpg\",\"datePublished\":\"2024-06-21T09:47:27+00:00\",\"dateModified\":\"2024-06-21T09:49:14+00:00\",\"author\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/#\/schema\/person\/974e1e0324e3e06f08253784e8eca61e\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2024\/06\/21\/les-dykes-de-deserta-grande\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2024\/06\/21\/les-dykes-de-deserta-grande\/#primaryimage\",\"url\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2024\/06\/Bardintzeff.20240423_143044.Deserta_Grande.dykeslow.s.jpg\",\"contentUrl\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2024\/06\/Bardintzeff.20240423_143044.Deserta_Grande.dykeslow.s.jpg\",\"width\":1417,\"height\":797},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/#website\",\"url\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/\",\"name\":\"VOLCANMANIA : le blog de Jacques-Marie BARDINTZEFF, volcanologue\",\"description\":\"Les volcans ? 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![\"\"](\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2024\/06\/Bardintzeff.20240423_143044.Deserta_Grande.dykeslow.s-450x253.jpg\")
Dykes verticaux (de couleur grise) bien visibles dans les produits rouges de retomb\u00e9es volcaniques (tephra) \u00e0 Deserta Grande, le 23 avril 2024. Au premier plan, la base scientifique construite sur la \u00ab\u00a0faj\u00e3\u00a0\u00bb (plateforme d\u2019\u00e9boulement) (\u00a9 J.M. Bardintzeff).<\/p>\n![\"\"](\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2024\/06\/Bardintzeff.20240423_143028.Deserta_Grande.dykeslow.s-450x253.jpg\")
Dykes gris dans les retomb\u00e9es volcaniques rouges \u00e0 Deserta Grande, le 23 avril 2024 (\u00a9 J.M. Bardintzeff).<\/p>\n