{"id":831,"date":"2018-12-04T12:41:23","date_gmt":"2018-12-04T11:41:23","guid":{"rendered":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/?page_id=831"},"modified":"2020-09-08T16:08:53","modified_gmt":"2020-09-08T14:08:53","slug":"24-ancienne-lithosphere-oceanique","status":"publish","type":"page","link":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/24-ancienne-lithosphere-oceanique\/","title":{"rendered":"24 &#8211; Ancienne lithosph\u00e8re oc\u00e9anique"},"content":{"rendered":"<h6 style=\"text-align: center\"><\/h6>\n<table style=\"height: 72px\" width=\"100%\">\n<tbody>\n<tr>\n<td style=\"text-align: center\" colspan=\"2\" width=\"241\"><span style=\"color: #00ccff\"><a style=\"color: #00ccff\" href=\"http:\/\/u.osmfr.org\/m\/227984\/\"><strong>Coordonn\u00e9es g\u00e9ographiques et GPS du site<\/strong><\/a><\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\" width=\"121\"><span style=\"color: #000000\">45\u00b019&#8217;58.0&#8243;N<\/span><\/td>\n<td style=\"text-align: center\" width=\"121\"><span style=\"color: #000000\">1\u00b009&#8217;03.3&#8243;E<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\" width=\"121\"><span style=\"color: #000000\">45,332775<\/span><\/td>\n<td style=\"text-align: center\" width=\"121\"><span style=\"color: #000000\">1,150917<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div>\n<table width=\"100%\">\n<tbody>\n<tr>\n<td align=\"center\" width=\"49%\">\n<p><figure id=\"attachment_832\" aria-describedby=\"caption-attachment-832\" style=\"width: 493px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Carte-ge\u0301ologique-1.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-832\" src=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Carte-ge\u0301ologique-1.png\" alt=\"\" width=\"493\" height=\"474\" srcset=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Carte-ge\u0301ologique-1.png 493w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Carte-ge\u0301ologique-1-300x288.png 300w\" sizes=\"auto, (max-width: 493px) 100vw, 493px\" \/><\/a><figcaption id=\"caption-attachment-832\" class=\"wp-caption-text\">Carte g\u00e9ologique : 1\/25 000 N\u00b0760- JUILLAC<\/figcaption><\/figure><\/td>\n<td align=\"center\" width=\"51%\"><a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Le\u0301gendes-1.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-833\" src=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Le\u0301gendes-1.png\" alt=\"\" width=\"545\" height=\"429\" srcset=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Le\u0301gendes-1.png 545w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Le\u0301gendes-1-300x236.png 300w\" sizes=\"auto, (max-width: 545px) 100vw, 545px\" \/><\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p><span style=\"color: #000000\"><strong><u>Description du site<\/u> :<\/strong><\/span><\/p>\n<p><span style=\"color: #000000\"><u>Commune<\/u>\u00a0: Le Moulin du Pont 24 160 Genis. Vall\u00e9e de l\u2019Auv\u00e9z\u00e8re.<\/span><\/p>\n<table style=\"height: 339px\" width=\"786\">\n<tbody>\n<tr>\n<td width=\"364\"><strong>\u00a0<a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Sche\u0301ma.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-834\" src=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Sche\u0301ma.png\" alt=\"\" width=\"508\" height=\"495\" srcset=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Sche\u0301ma.png 508w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Sche\u0301ma-300x292.png 300w\" sizes=\"auto, (max-width: 508px) 100vw, 508px\" \/><\/a><\/strong><\/td>\n<td width=\"364\"><strong>\u00a0<a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Google-earth.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-835\" src=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Google-earth.png\" alt=\"\" width=\"516\" height=\"499\" srcset=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Google-earth.png 516w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Google-earth-300x290.png 300w\" sizes=\"auto, (max-width: 516px) 100vw, 516px\" \/><\/a><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"color: #000000\"><em>Pour la localisation des sites <span style=\"color: #ff0000\"><strong>A<\/strong><\/span>, <span style=\"color: #ff0000\"><strong>B<\/strong><\/span> et <span style=\"color: #ff0000\"><strong>C<\/strong><\/span>\u00a0: voir titre des photos<\/em><\/span><\/p>\n<table style=\"height: 63px\" width=\"231\">\n<tbody>\n<tr>\n<td width=\"60\"><strong><br \/>\n<a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Fle\u0300che.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-836 aligncenter\" src=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Fle\u0300che.png\" alt=\"\" width=\"25\" height=\"27\" \/><\/a><\/strong><\/td>\n<td width=\"364\"><strong>\u00a0<span style=\"color: #000000\"><em>= acc\u00e8s \u00e0 la rivi\u00e8re<\/em><\/span><\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"60\"><strong><br \/>\n<a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Etoile.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-837 aligncenter\" src=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Etoile.png\" alt=\"\" width=\"33\" height=\"35\" \/><\/a><\/strong><\/td>\n<td width=\"364\"><span style=\"color: #000000\"><strong>\u00a0<em>=\u00a0 Barrage<\/em><\/strong><\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"color: #000000\"><em><u>Datation<\/u><\/em>\u00a0:<\/span>\u00a0<span style=\"color: #000000\"><em>Ordovicien, Silurien (Voir Notice_Carte de n\u00b0760 de Juillac)<\/em><\/span><\/p>\n<p><span style=\"color: #000000\"><em><u>Roches<\/u><\/em>\u00a0:\u00a0<\/span><\/p>\n<p><span style=\"color: #000000\"><span style=\"color: #ff0000\"><strong>Site A<\/strong><\/span>\u00a0: M\u00e9tas\u00e9diments de type schistes \u00e0 chlorite appartenant au faci\u00e8s schistes verts ou m\u00e9tap\u00e9lites.<\/span><\/p>\n<p><span style=\"color: #000000\"><span style=\"color: #ff0000\"><strong>Site B<\/strong><\/span>\u00a0: Tufs volcaniques m\u00e9tamorphis\u00e9s = M\u00e9tabasaltes = Prasinites<\/span><\/p>\n<p><span style=\"color: #000000\"><span style=\"color: #ff0000\"><strong>Site C<\/strong><\/span>\u00a0: M\u00e9tagabbros<\/span><\/p>\n<p><span style=\"color: #000000\"><em><u>Conditions de formation et pal\u00e9oenvironnement<\/u>\u00a0 :\u00a0<\/em><\/span><\/p>\n<p><span style=\"color: #000000\">Nous nous situons sur la bordure du Massif Central, qui appartient \u00e0 la grande cha\u00eene de montagne Hercynienne, \u00e9difi\u00e9e \u00e0 la fin de l\u2019\u00e8re primaire. Ce massif est bord\u00e9 \u00e0 l\u2019ouest par le Bassin Aquitain.<\/span><\/p>\n<p><span style=\"color: #000000\">Le site du Moulin du Pont pr\u00e9sente des t\u00e9moins de l\u2019histoire ant\u00e9rieure \u00e0 la collision, qui a conduit \u00e0 la formation du Massif Hercynien. Nous y trouvons donc des marqueurs d\u2019une ancienne lithosph\u00e8re oc\u00e9anique, qui est pass\u00e9e en subduction.<\/span><\/p>\n<p><span style=\"color: #000000\">Histoire globale de la chaine hercynienne\u00a0:<\/span><\/p>\n<ul>\n<li><span style=\"color: #000000\">Au <u>Silurien<\/u>: 3 continents (Larussia, Armorica et Gondwana) sont s\u00e9par\u00e9s par 2 oc\u00e9ans\u00a0(l\u2019oc\u00e9an Rh\u00e9\u00efc (1) et l\u2019oc\u00e9an Massif Central (2)) <em>cf.\u00a0document 1<\/em><\/span><\/li>\n<li><span style=\"color: #000000\">Au <u>D\u00e9vonien<\/u>, commence la fermeture par subduction de l\u2019oc\u00e9an Massif Central. La collision cr\u00e9e la chaine hercynienne dont fait partie le Massif Central. <em>cf.\u00a0<\/em><em>document 2<\/em><\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000\">Au <u>Carbonif\u00e8re<\/u>, il y a fermeture de l\u2019oc\u00e9an Rh\u00e9ique (<em>Rh\u00e9\u00efc en anglais<\/em>) au nord. <em>cf. document 2<\/em><\/span><\/p>\n<table style=\"height: 342px\" width=\"767\">\n<tbody>\n<tr>\n<td width=\"364\"><strong>\u00a0<\/strong><\/p>\n<p><figure id=\"attachment_838\" aria-describedby=\"caption-attachment-838\" style=\"width: 343px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Doc1.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-838\" src=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Doc1.png\" alt=\"\" width=\"343\" height=\"337\" srcset=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Doc1.png 508w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Doc1-300x295.png 300w\" sizes=\"auto, (max-width: 343px) 100vw, 343px\" \/><\/a><figcaption id=\"caption-attachment-838\" class=\"wp-caption-text\">Histoire de la chaine Hercynienne_document 1 Source : Jean-Claude Pons<\/figcaption><\/figure><\/td>\n<td width=\"364\">\n<figure id=\"attachment_839\" aria-describedby=\"caption-attachment-839\" style=\"width: 417px\" class=\"wp-caption alignnone\"><a style=\"font-weight: bold;font-style: italic;font-family: inherit;font-size: inherit\" href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Doc2.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-839\" src=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Doc2.png\" alt=\"\" width=\"417\" height=\"460\" srcset=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Doc2.png 550w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Doc2-272x300.png 272w\" sizes=\"auto, (max-width: 417px) 100vw, 417px\" \/><\/a><figcaption id=\"caption-attachment-839\" class=\"wp-caption-text\">Histoire de la chaine Hercynienne_document 2 Source : Jean-Claude Pons<\/figcaption><\/figure>\n<p><strong>\u00a0<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li><span style=\"color: #000000\"><strong><span style=\"color: #ff0000\"><u>Site A<\/u><\/span>\u00a0<\/strong>: sur la rive gauche de l\u2019Auv\u00e9z\u00e8re, le long de la route. Cette roche, vert clair \u00e0 grain fin, a un aspect satin\u00e9. La schistosit\u00e9 est tr\u00e8s bien marqu\u00e9e avec un pendage tr\u00e8s redress\u00e9. <em>Min\u00e9raux reconnaissables<\/em>\u00a0: petits quartz, petites paillettes de chlorite orient\u00e9es, petites paillettes de s\u00e9ricite orient\u00e9es. Cette roche a \u00e9t\u00e9 form\u00e9e \u00e0 partir d\u2019une p\u00e9lites (roche s\u00e9dimentaire \u00e0 grain, tr\u00e8s fins, argileuse).<\/span><\/li>\n<li><span style=\"color: #000000\"><strong><span style=\"color: #ff0000\"><u>Site B<\/u><\/span>\u00a0<\/strong>: en rive droite. La prasinite, roche m\u00e9tamorphique verte \u00e0 schistosit\u00e9 nette, est un ancien tuf volcanique de composition basaltique qui t\u00e9moigne d&#8217;un volcanisme de subduction au niveau d&#8217;un arc volcanique ( \u00e0 l\u2019image de ce qu\u2019il y a actuellement au niveau de l&#8217;arc volcanique des Antilles). <em>Min\u00e9raux reconnaissables<\/em>\u00a0: Pyrox\u00e8ne et Feldspaths.<\/span><\/li>\n<li><span style=\"color: #000000\"><strong><span style=\"color: #ff0000\"><u>Site C<\/u><\/span>\u00a0<\/strong>: Les m\u00e9tagabbros. Roches vert-noir\u00e2tre, massives. Sur un fond sombre se d\u00e9tachent des petits prismes allong\u00e9s, vert clair, agenc\u00e9s selon une texture magmatique dol\u00e9ritique. <em>Min\u00e9raux reconnaissables<\/em>\u00a0: grandes baguettes de feldspaths plagioclases alt\u00e9r\u00e9s, des pyrox\u00e8nes brun p\u00e2le et \u00e0 fort relief, des pyrox\u00e8nes vert tr\u00e8s p\u00e2le. Ces derniers sont d\u00e9stabilis\u00e9s notamment en actinote, \u00e9pidote et chlorite tandis que les feldspaths plagioclase le sont en albite et \u00e9pidote. Cette roche est donc un ancien pluton qui a subi un m\u00e9tamorphisme de faible intensit\u00e9 dans le faci\u00e8s schiste vert.<\/span><\/li>\n<\/ul>\n<figure id=\"attachment_840\" aria-describedby=\"caption-attachment-840\" style=\"width: 877px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/SiteAe\u0301chelle1.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-840\" src=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/SiteAe\u0301chelle1.png\" alt=\"\" width=\"877\" height=\"604\" srcset=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/SiteAe\u0301chelle1.png 877w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/SiteAe\u0301chelle1-300x207.png 300w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/SiteAe\u0301chelle1-768x529.png 768w\" sizes=\"auto, (max-width: 877px) 100vw, 877px\" \/><\/a><figcaption id=\"caption-attachment-840\" class=\"wp-caption-text\"><em>SITE A_\u00e9chelle\u00a0 1_M\u00e9tas\u00e9diments_dans le talus de la route, \u00e0 droite lorsque l\u2019on va vers le Moulin du Pont en venant du bourg de G\u00e9nis_Virage juste avant le pont.<\/em><\/figcaption><\/figure>\n<table style=\"height: 326px\" width=\"771\">\n<tbody>\n<tr>\n<td width=\"364\"><strong>\u00a0<\/strong><a style=\"font-weight: bold;font-style: italic;font-family: inherit;font-size: inherit\" href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2019\/01\/Moulin-du-Pont-35.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-858 \" src=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2019\/01\/Moulin-du-Pont-35.png\" alt=\"\" width=\"432\" height=\"372\" srcset=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2019\/01\/Moulin-du-Pont-35.png 633w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2019\/01\/Moulin-du-Pont-35-300x258.png 300w\" sizes=\"auto, (max-width: 432px) 100vw, 432px\" \/><\/a><br \/>\nSite A_\u00e9chelle 2_M\u00e9tas\u00e9diments<\/td>\n<td width=\"364\">\n<p><figure id=\"attachment_841\" aria-describedby=\"caption-attachment-841\" style=\"width: 301px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Moulin-du-Pont-27.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-841 \" src=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Moulin-du-Pont-27-200x300.jpg\" alt=\"\" width=\"301\" height=\"452\" srcset=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Moulin-du-Pont-27-200x300.jpg 200w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Moulin-du-Pont-27-768x1152.jpg 768w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Moulin-du-Pont-27-683x1024.jpg 683w\" sizes=\"auto, (max-width: 301px) 100vw, 301px\" \/><\/a><figcaption id=\"caption-attachment-841\" class=\"wp-caption-text\"><em>Site A_\u00e9chelle 3_M\u00e9tas\u00e9diments<\/em><\/figcaption><\/figure><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<figure id=\"attachment_843\" aria-describedby=\"caption-attachment-843\" style=\"width: 874px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/SiteBe\u0301chelle1.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-843\" src=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/SiteBe\u0301chelle1.png\" alt=\"\" width=\"874\" height=\"660\" srcset=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/SiteBe\u0301chelle1.png 874w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/SiteBe\u0301chelle1-300x227.png 300w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/SiteBe\u0301chelle1-768x580.png 768w\" sizes=\"auto, (max-width: 874px) 100vw, 874px\" \/><\/a><figcaption id=\"caption-attachment-843\" class=\"wp-caption-text\"><em>SITE B_\u00e9chelle\u00a0 1_Prasinites_dans le talus de la route, un peu apr\u00e8s le pont lorsque l\u2019on va vers Anhliac.<\/em><\/figcaption><\/figure>\n<table style=\"height: 342px\" width=\"767\">\n<tbody>\n<tr>\n<td width=\"364\"><strong><strong>\u00a0<\/strong><\/strong><\/p>\n<p><figure id=\"attachment_857\" aria-describedby=\"caption-attachment-857\" style=\"width: 487px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2019\/01\/Moulin-du-Pont-34.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-857 size-full\" src=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2019\/01\/Moulin-du-Pont-34.png\" alt=\"\" width=\"487\" height=\"679\" srcset=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2019\/01\/Moulin-du-Pont-34.png 487w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2019\/01\/Moulin-du-Pont-34-215x300.png 215w\" sizes=\"auto, (max-width: 487px) 100vw, 487px\" \/><\/a><figcaption id=\"caption-attachment-857\" class=\"wp-caption-text\">SITE B_\u00e9chelle 2_Prasinites<\/figcaption><\/figure><\/td>\n<td width=\"364\"><strong><strong>\u00a0<\/strong><\/strong><\/p>\n<p><figure id=\"attachment_845\" aria-describedby=\"caption-attachment-845\" style=\"width: 390px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Moulin-du-Pont-31.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-845 \" src=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Moulin-du-Pont-31-300x200.jpg\" alt=\"\" width=\"390\" height=\"261\" srcset=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Moulin-du-Pont-31-300x200.jpg 300w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Moulin-du-Pont-31-768x512.jpg 768w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Moulin-du-Pont-31-1024x683.jpg 1024w\" sizes=\"auto, (max-width: 390px) 100vw, 390px\" \/><\/a><figcaption id=\"caption-attachment-845\" class=\"wp-caption-text\">SITE B_\u00e9chelle 3_Prasinites<\/figcaption><\/figure><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<figure id=\"attachment_847\" aria-describedby=\"caption-attachment-847\" style=\"width: 1120px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/SiteCe\u0301chelle1.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-847\" src=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/SiteCe\u0301chelle1.png\" alt=\"\" width=\"1120\" height=\"691\" srcset=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/SiteCe\u0301chelle1.png 1120w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/SiteCe\u0301chelle1-300x185.png 300w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/SiteCe\u0301chelle1-768x474.png 768w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/SiteCe\u0301chelle1-1024x632.png 1024w\" sizes=\"auto, (max-width: 1120px) 100vw, 1120px\" \/><\/a><figcaption id=\"caption-attachment-847\" class=\"wp-caption-text\"><em>SITE C_\u00e9chelle\u00a0 1_M\u00e9tagabbros_dans le talus de la route, \u00e0 droite en remontant la route depuis le pont sur quelques centaines de m\u00e8tres_1<sup>er<\/sup> virage en direction de Anhliac.<\/em><\/figcaption><\/figure>\n<figure id=\"attachment_856\" aria-describedby=\"caption-attachment-856\" style=\"width: 556px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2019\/01\/Moulin-du-Pont-33.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-856 size-full\" src=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2019\/01\/Moulin-du-Pont-33.png\" alt=\"\" width=\"556\" height=\"385\" srcset=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2019\/01\/Moulin-du-Pont-33.png 556w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2019\/01\/Moulin-du-Pont-33-300x208.png 300w\" sizes=\"auto, (max-width: 556px) 100vw, 556px\" \/><\/a><figcaption id=\"caption-attachment-856\" class=\"wp-caption-text\">SITE C_\u00e9chelle 2_M\u00e9tagabbros<\/figcaption><\/figure>\n<p><span style=\"color: #000000\"><strong><u>Activit\u00e9s envisageables<\/u> :<\/strong><\/span><\/p>\n<ul>\n<li><span style=\"color: #000000\">Retrouver sur le terrain des marqueurs d\u2019une ouverture oc\u00e9anique et de la mise en place du plancher oc\u00e9anique.<\/span><\/li>\n<li><span style=\"color: #000000\">Aborder l\u2019\u00e9tude d\u2019une suite d\u2019\u00e9v\u00e8nements g\u00e9ologiques\u00a0: subduction et collision continentale.<\/span><\/li>\n<li><span style=\"color: #000000\">Retrouver l\u2019int\u00e9r\u00eat g\u00e9ologique de chaque site pour reconstituer l\u2019histoire g\u00e9ologique de la chaine hercynienne.<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000\"><strong><u>Capacit\u00e9s et attitudes<\/u> :<\/strong><\/span><\/p>\n<ul>\n<li><span style=\"color: #000000\">Pratiquer une d\u00e9marche d\u2019investigation \u00e0 partir d\u2019un travail de terrain favorisant l\u2019autonomie des \u00e9l\u00e8ves.<\/span><\/li>\n<li><span style=\"color: #000000\">Recenser, extraire et organiser des donn\u00e9es de terrain lors d&#8217;une sortie.<\/span><\/li>\n<li><span style=\"color: #000000\">R\u00e9aliser des croquis ou traiter num\u00e9riquement des photographies.<\/span><\/li>\n<li><span style=\"color: #000000\">Sorties pluridisciplinaires\u00a0:<\/span>\n<ul>\n<li><span style=\"color: #000000\"><u>Coll\u00e8ge cycle 4<\/u>\u00a0: En lien avec <strong>l&#8217;histoire et la g\u00e9ographie.<\/strong>\u00a0 Les paysages qui m&#8217;entourent, composantes g\u00e9ologiques et biologiques d\u2019un paysage \/ composantes naturelles et artificielles<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span style=\"color: #000000\"><strong><u>Acc\u00e8s \/ s\u00e9curit\u00e9<\/u>\u00a0:<\/strong><\/span><\/p>\n<p><span style=\"color: #000000\">Le site est localis\u00e9 au Moulin du Pont (24160).<\/span><\/p>\n<p><span style=\"color: #000000\">Depuis le parking, \u00e0 la faveur de la vall\u00e9e, il est possible d\u2019explorer dans un p\u00e9rim\u00e8tre restreint et \u00e0 pieds, plusieurs roches diff\u00e9rentes.<\/span><\/p>\n<figure id=\"attachment_850\" aria-describedby=\"caption-attachment-850\" style=\"width: 793px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Situation-1.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-850\" src=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Situation-1.png\" alt=\"\" width=\"793\" height=\"533\" srcset=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Situation-1.png 793w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Situation-1-300x202.png 300w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Situation-1-768x516.png 768w\" sizes=\"auto, (max-width: 793px) 100vw, 793px\" \/><\/a><figcaption id=\"caption-attachment-850\" class=\"wp-caption-text\">Situation et emplacement du site \u00ab le Moulin du Pont \u00bb (croix rose)<\/figcaption><\/figure>\n<div class=\"mceTemp\"><\/div>\n<p><span style=\"color: #000000\"><strong><u>Mots-cl\u00e9s et liens avec les programmes<\/u>\u00a0:<\/strong><\/span><\/p>\n<table width=\"100%\">\n<tbody>\n<tr>\n<td style=\"text-align: center\" colspan=\"2\" width=\"321\"><span style=\"color: #000000\"><strong>Coll\u00e8ge<\/strong><\/span><\/td>\n<td style=\"text-align: center\" colspan=\"2\" width=\"321\"><span style=\"color: #000000\"><strong>Lyc\u00e9e<\/strong><\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\" width=\"58\"><span style=\"color: #000000\"><strong>Cycle 3<\/strong><\/span><\/td>\n<td width=\"264\"><span style=\"color: #000000\">Identifier les composantes biologiques et g\u00e9ologiques d\u2019un paysage\u00a0&#8211; Paysages, g\u00e9ologie locale, interactions avec l\u2019environnement et le peuplement.<\/span><\/td>\n<td style=\"text-align: center\" width=\"50\"><span style=\"color: #000000\"><strong>Premi\u00e8re Sp\u00e9cialit\u00e9<\/strong><\/span><\/td>\n<td width=\"271\"><span style=\"color: #000000\">THEME 1\u00a0&#8211;\u00a0 La dynamique des zones de convergence.<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\" width=\"58\"><span style=\"color: #000000\"><strong>Cycle 4<\/strong><\/span><\/td>\n<td width=\"264\"><span style=\"color: #000000\">La plan\u00e8te Terre, l\u2019environnement et l\u2019action humaine \u2013 Expliquer quelques ph\u00e9nom\u00e8nes g\u00e9ologiques li\u00e9s au fonctionnement de la Terre (dynamique interne et tectonique des plaques).<\/span><\/td>\n<td style=\"text-align: center\" width=\"50\"><span style=\"color: #000000\"><strong>Terminale Sp\u00e9cialit\u00e9<\/strong><\/span><\/td>\n<td width=\"271\"><span style=\"color: #000000\">THEME 1B &#8211; A la recherche du pass\u00e9 g\u00e9ologique de notre plan\u00e8te : <\/span><\/p>\n<p style=\"padding-left: 40px\"><span style=\"color: #000000\">\u2022 Le temps et les roches<\/span><\/p>\n<p style=\"padding-left: 40px\"><span style=\"color: #000000\">\u2022 Les traces du pass\u00e9 mouvement\u00e9 de la Terre\u00a0: La recherche d\u2019oc\u00e9ans disparus.<\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"color: #000000\"><strong><u>A proximit\u00e9<\/u>\u00a0:<\/strong><\/span><\/p>\n<ul>\n<li><strong>Ancienne carri\u00e8re de Las Terrierras<\/strong>(24160) : ancienne ignimbrite, d\u00e9p\u00f4t volcanique pyroclastique a\u00e9rien de\u00a0nu\u00e9e ardente, transform\u00e9e par le m\u00e9tamorphisme \u00e9pizonal. <em>Voir fiche description sur la lithoth\u00e8que.<\/em><\/li>\n<li><strong>La roche noire de Saint-Paul la Roche <\/strong>(24800).<em>Voir fiche description sur la lithoth\u00e8que.<\/em><\/li>\n<li><strong>Le barrage du Moulin du Pont\u00a0<a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Etoile.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-837 alignnone\" src=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Etoile.png\" alt=\"\" width=\"33\" height=\"35\" \/><\/a><\/strong><\/li>\n<\/ul>\n<figure id=\"attachment_852\" aria-describedby=\"caption-attachment-852\" style=\"width: 4608px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Moulin-du-Pont-28.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-852\" src=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Moulin-du-Pont-28.jpg\" alt=\"\" width=\"4608\" height=\"3072\" srcset=\"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Moulin-du-Pont-28.jpg 4608w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Moulin-du-Pont-28-300x200.jpg 300w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Moulin-du-Pont-28-768x512.jpg 768w, https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-content\/uploads\/sites\/59\/2018\/12\/Moulin-du-Pont-28-1024x683.jpg 1024w\" sizes=\"auto, (max-width: 4608px) 100vw, 4608px\" \/><\/a><figcaption id=\"caption-attachment-852\" class=\"wp-caption-text\">Barrage Moulin du pont<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Coordonn\u00e9es g\u00e9ographiques et GPS du site 45\u00b019&#8217;58.0&#8243;N 1\u00b009&#8217;03.3&#8243;E 45,332775 1,150917 Description du site : Commune\u00a0: Le Moulin du Pont 24 160 Genis. Vall\u00e9e de l\u2019Auv\u00e9z\u00e8re. \u00a0 \u00a0 Pour la localisation &#8230;<\/p>\n","protected":false},"author":8,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-831","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-json\/wp\/v2\/pages\/831","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-json\/wp\/v2\/comments?post=831"}],"version-history":[{"count":10,"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-json\/wp\/v2\/pages\/831\/revisions"}],"predecessor-version":[{"id":1419,"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-json\/wp\/v2\/pages\/831\/revisions\/1419"}],"wp:attachment":[{"href":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/lithotheque\/wp-json\/wp\/v2\/media?parent=831"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}