{"id":4242,"date":"2021-03-05T08:41:51","date_gmt":"2021-03-05T08:41:51","guid":{"rendered":"http:\/\/nantes.apbg.org\/?p=4242"},"modified":"2025-12-07T18:51:38","modified_gmt":"2025-12-07T18:51:38","slug":"we-de-decouverte-des-eclogites-vendeennes","status":"publish","type":"post","link":"https:\/\/nantes.apbg.fr\/index.php\/2021\/03\/05\/we-de-decouverte-des-eclogites-vendeennes\/","title":{"rendered":"5-6 juin 2021 : WE de d\u00e9couverte des \u00e9clogites vend\u00e9ennes"},"content":{"rendered":"\n<figure class=\"wp-block-image alignright size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"485\" src=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/20210527_191604-1024x485-1.jpeg\" alt=\"\" class=\"wp-image-7358\" style=\"aspect-ratio:2.111258034955957;width:503px;height:auto\" srcset=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/20210527_191604-1024x485-1.jpeg 1024w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/20210527_191604-1024x485-1-300x142.jpeg 300w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/20210527_191604-1024x485-1-768x364.jpeg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Le comit\u00e9 de la r\u00e9gionale de Nantes de l&rsquo;APBG a organis\u00e9 un <strong>WE de d\u00e9couverte de l&rsquo;unit\u00e9 \u00c9clogite &#8211; m\u00e9tamorphisme de haute-pression en Vend\u00e9e<\/strong>. Sous la conduite de Gaston Godard, G\u00e9ologue \u00e0 l&rsquo;Institut de Physique du Globe de Paris, nous avons d\u00e9couvert le complexe m\u00e9tamorphique des Essarts et principalement son unit\u00e9 de haute pression (\u00e9clogites et gneiss).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span class=\"has-inline-color has-vivid-red-color\"><strong>Deux jours de terrain avec au programme<\/strong><\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Saint-Philbert-de-Grand-Lieu<\/li>\n\n\n\n<li>La carri\u00e8re de la Gerbaudi\u00e8re \u00e0 Saint-Philbert-de-Bouaine<\/li>\n\n\n\n<li>Rocheservi\u00e8re<\/li>\n\n\n\n<li>La Chabotterie<\/li>\n\n\n\n<li>Les Essarts<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Acc\u00e8s par ce lien vers la <a href=\"https:\/\/lft85.maps.arcgis.com\/apps\/dashboards\/8063eec411f74451ba85fa55a23214ae\" target=\"_blank\" rel=\"noreferrer noopener\">carte active des diff\u00e9rents lieux visit\u00e9s<\/a><\/p>\n\n\n\n<div class=\"wp-block-group alignwide is-layout-flow wp-block-group-is-layout-flow\">\n<figure class=\"wp-block-gallery aligncenter has-nested-images columns-3 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/196149358_754226281923735_675254513380190577_n.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"485\" data-id=\"7349\" src=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/196149358_754226281923735_675254513380190577_n-1024x485.jpg\" alt=\"\" class=\"wp-image-7349\" srcset=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/196149358_754226281923735_675254513380190577_n-1024x485.jpg 1024w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/196149358_754226281923735_675254513380190577_n-300x142.jpg 300w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/196149358_754226281923735_675254513380190577_n-768x364.jpg 768w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/196149358_754226281923735_675254513380190577_n-1536x728.jpg 1536w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/196149358_754226281923735_675254513380190577_n-1320x626.jpg 1320w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/196149358_754226281923735_675254513380190577_n.jpg 1728w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Le groupe dans la carri\u00e8re d&rsquo;\u00e9clogites de la Gerbaudi\u00e8re \u00e0 Saint Philbert de Bouaine (merci \u00e0 CMGO)<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197031314_754226938590336_9184667185429447957_n.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"578\" data-id=\"7350\" src=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197031314_754226938590336_9184667185429447957_n-1024x578.jpg\" alt=\"\" class=\"wp-image-7350\" srcset=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197031314_754226938590336_9184667185429447957_n-1024x578.jpg 1024w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197031314_754226938590336_9184667185429447957_n-300x169.jpg 300w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197031314_754226938590336_9184667185429447957_n-768x433.jpg 768w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197031314_754226938590336_9184667185429447957_n-1536x866.jpg 1536w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197031314_754226938590336_9184667185429447957_n-1320x744.jpg 1320w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197031314_754226938590336_9184667185429447957_n.jpg 2000w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">R\u00e9action m\u00e9tamorphique entre la biotite et le feldspath potassique donnant une double couronne de phingite et quartz c\u00f4t\u00e9 KF et de grenat et quartz c\u00f4t\u00e9 biotite, reconnaissable \u00e0 la loupe sous forme d&rsquo;un liser\u00e9 marron entourant la biotite<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197146021_754226675257029_1760962684567495988_n.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"485\" data-id=\"7351\" src=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197146021_754226675257029_1760962684567495988_n-1024x485.jpg\" alt=\"\" class=\"wp-image-7351\" srcset=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197146021_754226675257029_1760962684567495988_n-1024x485.jpg 1024w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197146021_754226675257029_1760962684567495988_n-300x142.jpg 300w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197146021_754226675257029_1760962684567495988_n-768x363.jpg 768w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197146021_754226675257029_1760962684567495988_n-1536x727.jpg 1536w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197146021_754226675257029_1760962684567495988_n-1320x625.jpg 1320w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197146021_754226675257029_1760962684567495988_n.jpg 2016w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">\u00c9clogite magn\u00e9sienne de la Compointerie correspondant au m\u00e9tamorphisme HP d&rsquo;un cumulat gabbro\u00efque faiblement diff\u00e9renci\u00e9<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197355756_754226741923689_4181898172303618929_n.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"485\" data-id=\"7352\" src=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197355756_754226741923689_4181898172303618929_n-1024x485.jpg\" alt=\"\" class=\"wp-image-7352\" srcset=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197355756_754226741923689_4181898172303618929_n-1024x485.jpg 1024w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197355756_754226741923689_4181898172303618929_n-300x142.jpg 300w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197355756_754226741923689_4181898172303618929_n-768x363.jpg 768w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197355756_754226741923689_4181898172303618929_n-1536x727.jpg 1536w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197355756_754226741923689_4181898172303618929_n-1320x625.jpg 1320w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197355756_754226741923689_4181898172303618929_n.jpg 2016w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">La Compointerie : \u00c9clogite avec de la Birbirite correspondant \u00e0 l&rsquo;alt\u00e9ration sous climat tropical \u00e9oc\u00e8ne d&rsquo;une serpentinite tr\u00e8s riche en silice (calc\u00e9doine)<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197739627_754227195256977_240831517605914112_n.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"485\" data-id=\"7354\" src=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197739627_754227195256977_240831517605914112_n-1024x485.jpg\" alt=\"\" class=\"wp-image-7354\" srcset=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197739627_754227195256977_240831517605914112_n-1024x485.jpg 1024w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197739627_754227195256977_240831517605914112_n-300x142.jpg 300w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197739627_754227195256977_240831517605914112_n-768x363.jpg 768w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197739627_754227195256977_240831517605914112_n-1536x727.jpg 1536w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197739627_754227195256977_240831517605914112_n-1320x625.jpg 1320w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197739627_754227195256977_240831517605914112_n.jpg 2016w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Le tout dans un cadre charg\u00e9 d&rsquo;histoire, comme ici au manoir de Grezay aux Essarts<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197788244_754226835257013_250583939106598916_n.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"485\" data-id=\"7355\" src=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197788244_754226835257013_250583939106598916_n-1024x485.jpg\" alt=\"\" class=\"wp-image-7355\" srcset=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197788244_754226835257013_250583939106598916_n-1024x485.jpg 1024w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197788244_754226835257013_250583939106598916_n-300x142.jpg 300w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197788244_754226835257013_250583939106598916_n-768x363.jpg 768w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197788244_754226835257013_250583939106598916_n-1536x727.jpg 1536w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197788244_754226835257013_250583939106598916_n-1320x625.jpg 1320w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197788244_754226835257013_250583939106598916_n.jpg 2016w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Alternance d&rsquo;\u00e9clogite ferrotitan\u00e9e (m\u00e9tamorphisme HP d&rsquo;un gabbro tr\u00e8s diff\u00e9renci\u00e9) et m\u00e9taplagiogranite \u00e0 la Chabotterie<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197735139_754227875256909_3216211735817617218_n.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"907\" height=\"1003\" data-id=\"7353\" src=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197735139_754227875256909_3216211735817617218_n.jpg\" alt=\"\" class=\"wp-image-7353\" srcset=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197735139_754227875256909_3216211735817617218_n.jpg 907w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197735139_754227875256909_3216211735817617218_n-271x300.jpg 271w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197735139_754227875256909_3216211735817617218_n-768x849.jpg 768w\" sizes=\"auto, (max-width: 907px) 100vw, 907px\" \/><\/a><figcaption class=\"wp-element-caption\">\u00c9clogite ruban\u00e9e de la Gerbaudi\u00e8re (contexte de N-MORB hercynien)<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197864936_754226891923674_6375599187459107436_n.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"479\" height=\"1024\" data-id=\"7356\" src=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197864936_754226891923674_6375599187459107436_n-479x1024.jpg\" alt=\"\" class=\"wp-image-7356\" srcset=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197864936_754226891923674_6375599187459107436_n-479x1024.jpg 479w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197864936_754226891923674_6375599187459107436_n-140x300.jpg 140w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197864936_754226891923674_6375599187459107436_n-768x1640.jpg 768w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197864936_754226891923674_6375599187459107436_n-719x1536.jpg 719w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2021\/03\/197864936_754226891923674_6375599187459107436_n.jpg 944w\" sizes=\"auto, (max-width: 479px) 100vw, 479px\" \/><\/a><figcaption class=\"wp-element-caption\">Diversit\u00e9 des roches de l&rsquo;encaissant des \u00e9clogites \u00e0 la Ruffeli\u00e8re : paragneiss \u00e0 pseudomorphoses de cordi\u00e9rite et migmatite<\/figcaption><\/figure>\n<\/figure>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Le comit\u00e9 de la r\u00e9gionale de Nantes de l&rsquo;APBG a organis\u00e9 un WE de d\u00e9couverte de l&rsquo;unit\u00e9 \u00c9clogite &#8211; m\u00e9tamorphisme<\/p>\n","protected":false},"author":1,"featured_media":7349,"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":[10,11,14],"tags":[],"class_list":["post-4242","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sortie","category-terrain","category-we"],"_links":{"self":[{"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/posts\/4242","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=4242"}],"version-history":[{"count":3,"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/posts\/4242\/revisions"}],"predecessor-version":[{"id":7361,"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/posts\/4242\/revisions\/7361"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/media\/7349"}],"wp:attachment":[{"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/media?parent=4242"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/categories?post=4242"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/tags?post=4242"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}