{"id":2003,"date":"2016-12-27T12:28:52","date_gmt":"2016-12-27T12:28:52","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/bardintzeff\/?p=2003"},"modified":"2016-12-27T12:31:08","modified_gmt":"2016-12-27T12:31:08","slug":"chaines-subalpines","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/bardintzeff\/2016\/12\/27\/chaines-subalpines\/","title":{"rendered":"Cha\u00eenes subalpines"},"content":{"rendered":"

Les cha\u00eenes subalpines (du nord au sud : Bornes, Bauges, Chartreuse, Vercors, Diois, Baronnies), situ\u00e9es dans les Alpes externes (zone dauphinoise, voir mon blog du 20 d\u00e9cembre 2016) sont essentiellement constitu\u00e9es de roches s\u00e9dimentaires (calcaires, marnes) pliss\u00e9es.<\/p>\n

\"bardintzeff-2013-08-26-sam_5972-s\"Panorama sur les cha\u00eenes subalpines, depuis la Bastille au-dessus de Grenoble. Au centre, le synclinal perch\u00e9 \u201ecasque\u201c du N\u00e9ron (1298 m) en Chartreuse, \u00e0 gauche le Vercors. Au milieu la vall\u00e9e (\u201ecluse\u201c) de l\u2019Is\u00e8re appel\u00e9e Gr\u00e9sivaudan et son confluent avec son affluent le Drac (au fond). Les villes de Saint-Martin-le-Vinoux (premier plan) puis de Saint-\u00c9gr\u00e8ve (\u00a9 J.M. Bardintzeff).<\/p>\n

Pour les passionn\u00e9s\u00a0: un pli en bosse est appel\u00e9 antiforme, un pli en creux est une synforme. Un pli dont les roches du c\u0153ur sont plus anciennes que celles de la bordure est un anticlinal\u00a0; si le c\u0153ur est plus r\u00e9cent, il s\u2019agit d\u2019un synclinal. Dans un plissement \u00ab\u00a0simple\u00a0\u00bb, une antiforme est aussi un anticlinal et une synforme est aussi un synclinal. Une synforme initialement en creux peut devenir un sommet \u00ab\u00a0perch\u00e9\u00a0\u00bb par le jeu de l\u2019\u00e9rosion diff\u00e9rentielle.<\/p>\n","protected":false},"excerpt":{"rendered":"

Les cha\u00eenes subalpines (du nord au sud : Bornes, Bauges, Chartreuse, Vercors, Diois, Baronnies), situ\u00e9es dans les Alpes externes (zone dauphinoise, voir mon blog du 20 d\u00e9cembre 2016) sont essentiellement constitu\u00e9es de roches s\u00e9dimentaires (calcaires, marnes) pliss\u00e9es. Panorama sur les cha\u00eenes subalpines, depuis la Bastille au-dessus de Grenoble. Au centre, le synclinal perch\u00e9 \u201ecasque\u201c du … Continuer la lecture de Cha\u00eenes subalpines<\/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":[79,681,682,676,639,683,672,684,309,81,673,312,553,685,686,687,688,689,690,691,692,693],"class_list":["post-2003","post","type-post","status-publish","format-standard","hentry","category-voyages","tag-alpes","tag-anticlinal","tag-antiforme","tag-bastille","tag-calcaire","tag-chaine-subalpine","tag-chartreuse","tag-cluse","tag-drac","tag-grenoble","tag-gresivaudan","tag-isere","tag-marne","tag-neron","tag-pli","tag-plissement","tag-saint-egreve","tag-saint-martin-le-vinoux","tag-synclinal","tag-synforme","tag-vercors","tag-zone-dauphinoise"],"yoast_head":"\nCha\u00eenes subalpines, 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\/27\/chaines-subalpines\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cha\u00eenes subalpines, par Jacques-Marie Bardintzeff\" \/>\n<meta property=\"og:description\" content=\"Les cha\u00eenes subalpines (du nord au sud : Bornes, Bauges, Chartreuse, Vercors, Diois, Baronnies), situ\u00e9es dans les Alpes externes (zone dauphinoise, voir mon blog du 20 d\u00e9cembre 2016) sont essentiellement constitu\u00e9es de roches s\u00e9dimentaires (calcaires, marnes) pliss\u00e9es. Panorama sur les cha\u00eenes subalpines, depuis la Bastille au-dessus de Grenoble. 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