{"id":6369,"date":"2020-11-24T15:23:02","date_gmt":"2020-11-24T15:23:02","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/bardintzeff\/?p=6369"},"modified":"2020-12-01T12:05:09","modified_gmt":"2020-12-01T12:05:09","slug":"la-dalle-a-ammonites-de-digne-les-bains","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2020\/11\/24\/la-dalle-a-ammonites-de-digne-les-bains\/","title":{"rendered":"La dalle \u00e0 ammonites de Digne-les-Bains"},"content":{"rendered":"

\u00c0 Digne-les-Bains (04000) dans les Alpes-de-Haute-Provence, une spectaculaire dalle rocheuse de 350 m2<\/sup>, expose plus de 1500 fossiles d\u2019ammonites, certaines de grande taille (jusqu\u2019\u00e0 70 cm). Cette roche calcaire est dat\u00e9e du Sin\u00e9murien (de 199 \u00e0 191 millions d\u2019ann\u00e9es), durant la p\u00e9riode Jurassique de l\u2019\u00e8re Secondaire.<\/p>\n

\"\"<\/p>\n

Jacques-Marie Bardintzeff, g\u00e9ologue, admiratif devant la dalle \u00e0 ammonites de Digne-les-Bains (photo prise le 11\/5\/2006, \u00a9 J.M. Bardintzeff, merci \u00e0 Myette Guiomar).<\/p>\n

<\/p>\n

Les ammonites forment un groupe fossile de mollusques c\u00e9phalopodes.<\/p>\n

\"\"<\/p>\n

La dalle \u00e0 ammonites de Digne-les-Bains, un outil p\u00e9dagogique de premier ordre pour expliquer la disparition et la fossilisation des esp\u00e8ces, re\u00e7oit r\u00e9guli\u00e8rement la visite de groupes scolaires (\u00a9 J.M. Bardintzeff).<\/p>\n

Les ammonites sont apparues au d\u00e9but de l\u2019\u00e8re Secondaire (il y a 252 millions d\u2019ann\u00e9es) pour dispara\u00eetre assez brusquement \u00e0 la fin de celle-ci (il y a 66 millions d\u2019ann\u00e9es), en m\u00eame temps que les dinosaures.<\/p>\n

\"\"D\u00e9tail de la dalle \u00e0 ammonites de Digne-les-Bains (\u00a9 J.M. Bardintzeff).<\/p>\n

Ce site naturel est prot\u00e9g\u00e9 dans le cadre de la R\u00e9serve naturelle nationale g\u00e9ologique de Haute-Provence.<\/p>\n","protected":false},"excerpt":{"rendered":"

\u00c0 Digne-les-Bains (04000) dans les Alpes-de-Haute-Provence, une spectaculaire dalle rocheuse de 350 m2, expose plus de 1500 fossiles d\u2019ammonites, certaines de grande taille (jusqu\u2019\u00e0 70 cm). Cette roche calcaire est dat\u00e9e du Sin\u00e9murien (de 199 \u00e0 191 millions d\u2019ann\u00e9es), durant la p\u00e9riode Jurassique de l\u2019\u00e8re Secondaire. Jacques-Marie Bardintzeff, g\u00e9ologue, admiratif devant la dalle \u00e0 ammonites … Continuer la lecture de La dalle \u00e0 ammonites de Digne-les-Bains<\/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":[8],"tags":[79,2199,2200,21,639,2201,2207,2203,2204,357,175,2216,1070,2205,2218,2206],"class_list":["post-6369","post","type-post","status-publish","format-standard","hentry","category-voyages","tag-alpes","tag-alpes-de-haute-provence","tag-ammonite","tag-bardintzeff","tag-calcaire","tag-cephalopode","tag-dalle-a-ammonites","tag-digne-les-bains","tag-ere-secondaire","tag-fossile","tag-geologue","tag-haute-provence","tag-jurassique","tag-mollusque","tag-reserve-naturelle-nationale-geologique-de-haute-provence","tag-sinemurien"],"yoast_head":"\nLa dalle \u00e0 ammonites de Digne-les-Bains, 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\/2020\/11\/24\/la-dalle-a-ammonites-de-digne-les-bains\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La dalle \u00e0 ammonites de Digne-les-Bains, par Jacques-Marie Bardintzeff\" \/>\n<meta property=\"og:description\" content=\"\u00c0 Digne-les-Bains (04000) dans les Alpes-de-Haute-Provence, une spectaculaire dalle rocheuse de 350 m2, expose plus de 1500 fossiles d\u2019ammonites, certaines de grande taille (jusqu\u2019\u00e0 70 cm). Cette roche calcaire est dat\u00e9e du Sin\u00e9murien (de 199 \u00e0 191 millions d\u2019ann\u00e9es), durant la p\u00e9riode Jurassique de l\u2019\u00e8re Secondaire. 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