{"id":1928,"date":"2016-12-14T13:06:39","date_gmt":"2016-12-14T13:06:39","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/bardintzeff\/?p=1928"},"modified":"2016-12-14T20:57:33","modified_gmt":"2016-12-14T20:57:33","slug":"survol-falaises-detretat","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2016\/12\/14\/survol-falaises-detretat\/","title":{"rendered":"Survol des falaises d\u2019\u00c9tretat"},"content":{"rendered":"<p>Les roches calcaires claires des falaises d\u2019\u00c9tretat en Seine-Maritime datent de la p\u00e9riode g\u00e9ologique du Cr\u00e9tac\u00e9 (plus pr\u00e9cis\u00e9ment du Turonien &#8211; Coniacien, soit un \u00e2ge de 90 millions d\u2019ann\u00e9es). La roche est de la craie (vari\u00e9t\u00e9 de calcaire), qui a donn\u00e9 son nom au Cr\u00e9tac\u00e9.<\/p>\n<p>On note localement des lits de \u00ab\u00a0rognons\u00a0\u00bb de silex, que l\u2019on retrouve en galets au pied des falaises.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1930 aligncenter\" src=\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2016\/12\/Bardintzeff.1989.06.04_26-Etretat.s-450x296.jpg\" alt=\"bardintzeff-1989-06-04_26-etretat-s\" width=\"675\" height=\"444\" srcset=\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2016\/12\/Bardintzeff.1989.06.04_26-Etretat.s-450x296.jpg 450w, https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2016\/12\/Bardintzeff.1989.06.04_26-Etretat.s-768x505.jpg 768w, https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2016\/12\/Bardintzeff.1989.06.04_26-Etretat.s-1024x673.jpg 1024w, https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2016\/12\/Bardintzeff.1989.06.04_26-Etretat.s.jpg 1772w\" sizes=\"auto, (max-width: 675px) 100vw, 675px\" \/>Vue a\u00e9rienne des falaises d\u2019\u00c9tretat (\u00a9 J.M. Bardintzeff).<!--more--><\/p>\n<p>Ce vol \u00ab\u00a0g\u00e9ologique\u00a0\u00bb a \u00e9t\u00e9 effectu\u00e9 lors des ann\u00e9es 90 avec mon ami G\u00e9rard Bidon (l\u2019un pilotant \u00e0 l\u2019aller, l\u2019autre au retour), \u00e0 bord d\u2019un avion Robin DR 400 de l\u2019a\u00e9roclub Jean Bertin de Chavenay.<\/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>Les roches calcaires claires des falaises d\u2019\u00c9tretat en Seine-Maritime datent de la p\u00e9riode g\u00e9ologique du Cr\u00e9tac\u00e9 (plus pr\u00e9cis\u00e9ment du Turonien &#8211; Coniacien, soit un \u00e2ge de 90 millions d\u2019ann\u00e9es). La roche est de la craie (vari\u00e9t\u00e9 de calcaire), qui a donn\u00e9 son nom au Cr\u00e9tac\u00e9. On note localement des lits de \u00ab\u00a0rognons\u00a0\u00bb de silex, que &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2016\/12\/14\/survol-falaises-detretat\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Survol des falaises d\u2019\u00c9tretat<\/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":[8],"tags":[639,647,648,649,650,651],"class_list":["post-1928","post","type-post","status-publish","format-standard","hentry","category-voyages","tag-calcaire","tag-craie","tag-cretace","tag-etretat","tag-falaise","tag-silex"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Survol des falaises d\u2019\u00c9tretat, 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\/2016\/12\/14\/survol-falaises-detretat\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Survol des falaises d\u2019\u00c9tretat, par Jacques-Marie Bardintzeff\" \/>\n<meta property=\"og:description\" content=\"Les roches calcaires claires des falaises d\u2019\u00c9tretat en Seine-Maritime datent de la p\u00e9riode g\u00e9ologique du Cr\u00e9tac\u00e9 (plus pr\u00e9cis\u00e9ment du Turonien &#8211; Coniacien, soit un \u00e2ge de 90 millions d\u2019ann\u00e9es). La roche est de la craie (vari\u00e9t\u00e9 de calcaire), qui a donn\u00e9 son nom au Cr\u00e9tac\u00e9. On note localement des lits de \u00ab\u00a0rognons\u00a0\u00bb de silex, que &hellip; Continuer la lecture de Survol des falaises d\u2019\u00c9tretat &rarr;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2016\/12\/14\/survol-falaises-detretat\/\" \/>\n<meta property=\"og:site_name\" content=\"VOLCANMANIA : le blog de Jacques-Marie BARDINTZEFF, volcanologue\" \/>\n<meta property=\"article:published_time\" content=\"2016-12-14T13:06:39+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2016-12-14T20:57:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2016\/12\/Bardintzeff.1989.06.04_26-Etretat.s.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1772\" \/>\n\t<meta property=\"og:image:height\" content=\"1165\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\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\/2016\/12\/14\/survol-falaises-detretat\/\",\"url\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2016\/12\/14\/survol-falaises-detretat\/\",\"name\":\"Survol des falaises d\u2019\u00c9tretat, par Jacques-Marie Bardintzeff\",\"isPartOf\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2016\/12\/14\/survol-falaises-detretat\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2016\/12\/14\/survol-falaises-detretat\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2016\/12\/Bardintzeff.1989.06.04_26-Etretat.s-450x296.jpg\",\"datePublished\":\"2016-12-14T13:06:39+00:00\",\"dateModified\":\"2016-12-14T20:57:33+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\/2016\/12\/14\/survol-falaises-detretat\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2016\/12\/14\/survol-falaises-detretat\/#primaryimage\",\"url\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2016\/12\/Bardintzeff.1989.06.04_26-Etretat.s.jpg\",\"contentUrl\":\"https:\/\/blogs.futura-sciences.com\/bardintzeff\/wp-content\/uploads\/sites\/3\/2016\/12\/Bardintzeff.1989.06.04_26-Etretat.s.jpg\",\"width\":1772,\"height\":1165},{\"@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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