{"id":1042,"date":"2013-08-20T12:38:51","date_gmt":"2013-08-20T12:38:51","guid":{"rendered":"http:\/\/nantes.apbg.org\/?p=1042"},"modified":"2025-09-23T15:29:34","modified_gmt":"2025-09-23T15:29:34","slug":"sortie-geologique-les-mauges-cristallines","status":"publish","type":"post","link":"https:\/\/nantes.apbg.fr\/index.php\/2013\/08\/20\/sortie-geologique-les-mauges-cristallines\/","title":{"rendered":"Sortie g\u00e9ologique : les Mauges cristallines"},"content":{"rendered":"\n<figure class=\"wp-block-image alignright size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"480\" src=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2025\/09\/DSCN0016.jpg\" alt=\"\" class=\"wp-image-6676\" style=\"width:369px;height:auto\" srcset=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2025\/09\/DSCN0016.jpg 640w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2025\/09\/DSCN0016-300x225.jpg 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Le dimanche 13 octobre 2013, une sortie g\u00e9ologique autour des Mauges cristallines, sous la conduite de Fabrice Redois, Ma\u00eetre de conf\u00e9rence \u00e0 l&rsquo;universit\u00e9 d&rsquo;Angers.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #800000\"><strong>Au programme&nbsp;de la journ\u00e9e :<\/strong><\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&#8211; Cette journ\u00e9e nous a permis de d\u00e9couvrir <strong>le domaine des Mauges<\/strong>, unit\u00e9 g\u00e9ologique pal\u00e9ozo\u00efque (Briov\u00e9rien, Cambrien volcano-s\u00e9dimentaire) intrud\u00e9e par des granites post\u00e9rieurs (\u00ab\u00a0chirons\u00a0\u00bb) lors de l\u2019orog\u00e9n\u00e8se hercynienne, li\u00e9e \u00e0 l&rsquo;intrusion (apophyses du granite de Thouars). Un \u00e9tude g\u00e9ochronologique et g\u00e9omorphologique&nbsp;a \u00e9t\u00e9&nbsp;faite :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>du plateau des Mauges,<\/li>\n\n\n\n<li>de la butte de St-Georges-de-gardes\u00a0en relation avec la partie nord d\u2019un synclinal,<\/li>\n\n\n\n<li>des Chirons granitiques<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image alignright size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"480\" src=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2025\/09\/DSCN0052.jpg\" alt=\"\" class=\"wp-image-6677\" style=\"width:442px;height:auto\" srcset=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2025\/09\/DSCN0052.jpg 640w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2025\/09\/DSCN0052-300x225.jpg 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">L&rsquo;\u00e9tude g\u00e9ologique s&rsquo;est appuy\u00e9e sur&nbsp;&nbsp;4 cartes g\u00e9ologiques mitoyennes (cf. photo), dont la nouvelle carte de Vihiers (disponible sur <a href=\"http:\/\/infoterre.brgm.fr\/viewer\/MainTileForward.do\" target=\"_blank\">le site d&rsquo;Infoterre <\/a>sans l\u00e9gendes) \u00e0 mettre en parall\u00e8le avec la carte harmonis\u00e9e (disponible sur le <a href=\"http:\/\/infoterre.brgm.fr\/viewer\/MainTileForward.do\" target=\"_blank\">site d&rsquo;Infoterre<\/a>, avec l\u00e9gendes)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Elle s&rsquo;est termin\u00e9e dans la bonne humeur&nbsp; chez un viticulteur du Layon (\u00e0 Passavant sur Layon)<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"367\" src=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2025\/09\/carte-geol-sortie-Mauges-internet.jpg\" alt=\"\" class=\"wp-image-6674\" srcset=\"https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2025\/09\/carte-geol-sortie-Mauges-internet.jpg 700w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2025\/09\/carte-geol-sortie-Mauges-internet-300x157.jpg 300w, https:\/\/nantes.apbg.fr\/wp-content\/uploads\/2025\/09\/carte-geol-sortie-Mauges-internet-390x205.jpg 390w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le dimanche 13 octobre 2013, une sortie g\u00e9ologique autour des Mauges cristallines, sous la conduite de Fabrice Redois, Ma\u00eetre de<\/p>\n","protected":false},"author":1,"featured_media":1147,"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":[2],"tags":[],"class_list":["post-1042","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-activites-de-la-regionale"],"_links":{"self":[{"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/posts\/1042","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=1042"}],"version-history":[{"count":2,"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/posts\/1042\/revisions"}],"predecessor-version":[{"id":6802,"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/posts\/1042\/revisions\/6802"}],"wp:attachment":[{"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/media?parent=1042"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/categories?post=1042"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/tags?post=1042"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}