{"id":5757,"date":"2024-02-01T17:03:11","date_gmt":"2024-02-01T17:03:11","guid":{"rendered":"https:\/\/nantes.apbg.org\/?p=5757"},"modified":"2025-12-07T20:28:47","modified_gmt":"2025-12-07T20:28:47","slug":"we-du-22-23-juin-2024-metamorphisme-hercynien-de-sauveterre-a-la-chaume","status":"publish","type":"post","link":"https:\/\/nantes.apbg.fr\/index.php\/2024\/02\/01\/we-du-22-23-juin-2024-metamorphisme-hercynien-de-sauveterre-a-la-chaume\/","title":{"rendered":"WE du 22 &#8211; 23 juin 2024 : M\u00e9tamorphisme hercynien de Sauveterre \u00e0 La Chaume"},"content":{"rendered":"\n<figure class=\"wp-block-image alignright size-large is-resized\"><a href=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2024\/02\/photo-20240622-165652-scaled-1.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"484\" src=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2024\/02\/photo-20240622-165652-scaled-1-1024x484.jpg\" alt=\"\" class=\"wp-image-7639\" style=\"width:566px;height:auto\" srcset=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2024\/02\/photo-20240622-165652-scaled-1-1024x484.jpg 1024w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2024\/02\/photo-20240622-165652-scaled-1-300x142.jpg 300w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2024\/02\/photo-20240622-165652-scaled-1-768x363.jpg 768w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2024\/02\/photo-20240622-165652-scaled-1-1536x727.jpg 1536w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2024\/02\/photo-20240622-165652-scaled-1-2048x969.jpg 2048w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2024\/02\/photo-20240622-165652-scaled-1-1320x624.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Le groupe sur les porphyro\u00efdes de Br\u00e9tignolles-sur-Mer<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:15px\">Pour la fin de l&rsquo;ann\u00e9e scolaire, le comit\u00e9 r\u00e9gional de Nantes de l&rsquo;APBG a organis\u00e9 \u00ab\u00a0un voyage au centre de la Terre\u00a0\u00bb, depuis l&rsquo;\u00e9pizone \u00e0 chloritoschistes \u00e0 Sauveterre jusqu&rsquo;\u00e0 la catazone \u00e0 migmatites \u00e0 la Chaume, en compagnie de <strong>Gaston Godard<\/strong>. En ce WE ensoleill\u00e9, des apbgistes nantais ont su profiter des plages entre Sauveterre et l\u2019Aubraie pr\u00e8s des Sable d\u2019Olonne : pas pour se baigner ni faire bronzette mais pour r\u00e9aliser un voyage au centre de la Terre.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tel \u00e9tait le th\u00e8me de ce WE g\u00e9ologique pass\u00e9 en compagnie de Gaston Godard. Au programme, r\u00e9alisation de l\u2019\u00e9tude des roches tout au long de la coupe lev\u00e9e par Mireille Ters en 1980 de Sauveterre (l\u2019\u00e9pizone) \u00e0 la Chaume et les Sables d\u2019Olonne (la catazone) afin d\u2019observer une gradation du m\u00e9tamorphisme hercynien. Une c\u00e9l\u00e8bre coupe g\u00e9ologique t\u00e9moin d\u2019un m\u00e9tamorphisme de basse pression et de haute temp\u00e9rature caract\u00e9ristique de la collision continentale \u00e0 l\u2019origine de la cha\u00eene hercynienne. Mais le littoral vend\u00e9en regorgeant de multiples richesses g\u00e9ologiques, Gaston Godard nous a aussi fait d\u00e9couvrir la mine de gal\u00e8ne argentif\u00e8re de Talmont ainsi que la carri\u00e8re de Vair\u00e9 avec ses prismes de rhyodacite.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Une nouvelle fois, un grand merci \u00e0 Gaston Godard pour sa disponibilit\u00e9, le partage de son exp\u00e9rience et de ses connaissances scientifiques. On attend le prochain voyage\u2026.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En attendant, voici le tableau de bord du WE, vous y trouverez les photos, les g\u00e9olocalisations ainsi que les explications donn\u00e9es aux diff\u00e9rents endroits. Bonne visite virtuelle !<\/p>\n\n\n\n<iframe\n    width=\"100%\"\nheight=\"600\"\n    src=\"https:\/\/apbg.maps.arcgis.com\/apps\/dashboards\/81b772a2da0b46edb3e77f7dda7fa380\">\n<\/iframe>\n","protected":false},"excerpt":{"rendered":"<p>Pour la fin de l&rsquo;ann\u00e9e scolaire, le comit\u00e9 r\u00e9gional de Nantes de l&rsquo;APBG a organis\u00e9 \u00ab\u00a0un voyage au centre de<\/p>\n","protected":false},"author":1,"featured_media":7639,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[11,14],"tags":[],"class_list":["post-5757","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-terrain","category-we"],"_links":{"self":[{"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/posts\/5757","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/comments?post=5757"}],"version-history":[{"count":1,"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/posts\/5757\/revisions"}],"predecessor-version":[{"id":7640,"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/posts\/5757\/revisions\/7640"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/media\/7639"}],"wp:attachment":[{"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/media?parent=5757"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/categories?post=5757"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/tags?post=5757"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}