{"id":383,"date":"2021-03-31T16:29:48","date_gmt":"2021-03-31T14:29:48","guid":{"rendered":"https:\/\/www.vulcania.com\/science\/?page_id=383"},"modified":"2023-03-22T10:06:23","modified_gmt":"2023-03-22T09:06:23","slug":"velay","status":"publish","type":"page","link":"https:\/\/www.vulcania.com\/science\/auvergne\/volcans-dauvergne\/velay\/","title":{"rendered":"Velay"},"content":{"rendered":"

[vc_row el_class=\u00a0\u00bbbloc-titre\u00a0\u00bb][vc_column width=\u00a0\u00bb1\/12″][\/vc_column][vc_column width=\u00a0\u00bb10\/12″][vc_column_text]Entourant la ville du Puy-en-Velay, le Dev\u00e8s, les bassins du Puy et de l\u2019Emblavez, et le Velay oriental constituent ensemble la plus grande province volcanique du Massif Central : le Velay.<\/p>\n

Cette large\u00a0zone volcanique<\/b> est probablement la plus m\u00e9connue ; on y trouve pourtant des volcans r\u00e9cents (120 000 ans) et une grande diversit\u00e9 d\u2019\u00e9difices.<\/p>\n

Les plus \u00e9tonnants sont peut-\u00eatre les \u2018\u2018sucs\u2019\u2019<\/b>, ces pointements de lave visqueuse, souvent de phonolite<\/a>, pr\u00e9sents dans le bassin de l\u2019Emblavez et dans le pays des Bouti\u00e8res. Le plus c\u00e9l\u00e8bre est le\u00a0Mont Gerbier-de-Jonc<\/b>*, au pied duquel la Loire prend sa source ; en forme de pain de sucre prism\u00e9, il est vieux de 8,2 millions d\u2019ann\u00e9es.<\/p>\n

Au Nord-Ouest, le Dev\u00e8s est le plus vaste plateau basaltique<\/b>\u00a0de France ; il est constell\u00e9 de deux cents\u00a0c\u00f4nes de scories<\/a><\/b>\u00a0aux formes \u00e9mouss\u00e9es et de plus d\u2019une centaine de\u00a0maars<\/b><\/a>. De tr\u00e8s nombreux \u00e9panchements basaltiques se sont produits dans le secteur, donnant naissance \u00e0 de magnifiques ensembles d\u2019orgues volcaniques<\/b>, comme celles de la roche Servi\u00e8re, dite rocher de Prades.<\/p>\n

* Bien qu\u2019il soit situ\u00e9 dans la province volcanique du Velay, le Mont Gerbier-de-Jonc (1 551 m) ne fait pas partie de l\u2019Auvergne puisqu\u2019il se trouve en Ard\u00e8che.<\/i>[\/vc_column_text][\/vc_column][vc_column width=\u00a0\u00bb1\/12″][\/vc_column][\/vc_row][vc_row][vc_column width=\u00a0\u00bb1\/12″][\/vc_column][vc_column width=\u00a0\u00bb10\/12″][vc_column_text]<\/p>\n

Les autres ensembles g\u00e9ologiques de l’Auvergne volcanique :<\/h3>\n

[\/vc_column_text][vc_basic_grid post_type=\u00a0\u00bbpage\u00a0\u00bb max_items=\u00a0\u00bb10″ element_width=\u00a0\u00bb3″ item=\u00a0\u00bb573″ grid_id=\u00a0\u00bbvc_gid:1679475955296-9735e777-ea27-2″ taxonomies=\u00a0\u00bb18″][\/vc_column][vc_column width=\u00a0\u00bb1\/12″][\/vc_column][\/vc_row][vc_row][vc_column]

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Exp\u00e9rimentez \u00e0 Vulcania<\/h4><\/span><\/span>\n<\/div>
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R\u00e9veil des G\u00e9ants d'Auvergne<\/h3>\n

Depuis environ 7000 ans, le volcanisme d'Auvergne semble en sommeil... Et si les volcans de la Cha\u00eene des Puys se r\u00e9veillaient ? Vivez en direct leur r\u00e9veil dans cette attraction dynamique !<\/p>\n\n\t\t<\/div>\n\t<\/div>\n

En savoir plus sur \"R\u00e9veil des g\u00e9ants d'Auvergne\"<\/a><\/div><\/div><\/div><\/div>
<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>[\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"Exp\u00e9rimentez \u00e0 Vulcania R\u00e9veil des G\u00e9ants d'Auvergne Depuis environ 7000 ans, le volcanisme d'Auvergne semble en sommeil... Et si les volcans de la Cha\u00eene des Puys se r\u00e9veillaient ? Vivez en direct leur r\u00e9veil dans cette attraction dynamique ! En savoir plus sur \"R\u00e9veil des g\u00e9ants d'Auvergne\"","protected":false},"author":4,"featured_media":765,"parent":227,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"tags":[18],"acf":[],"yoast_head":"\nLa zone volcanique du Velay : en savoir plus avec Vulcania<\/title>\n<meta name=\"description\" content=\"Plus grand province volcanique du Massif Central, le Velay se compose d'une riche diversit\u00e9 d'\u00e9difices. 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