{"id":674,"date":"2024-07-09T13:50:12","date_gmt":"2024-07-09T11:50:12","guid":{"rendered":"https:\/\/anr.gm.univ-montp2.fr\/?page_id=674"},"modified":"2024-07-26T12:09:59","modified_gmt":"2024-07-26T10:09:59","slug":"foliation","status":"publish","type":"page","link":"https:\/\/collectionsgeol3d.gm.umontpellier.fr\/?page_id=674","title":{"rendered":"Schistosit\u00e9-Foliation-Lin\u00e9ation"},"content":{"rendered":"\n
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\nLa schistosit\u00e9<\/strong> est le plan de d\u00e9bit m\u00e9canique, la foliation<\/strong> est le plan dans lequel on observe les min\u00e9raux d\u00e9form\u00e9s. Schistosit\u00e9 et foliation correspondent au plan d\u2019aplatissement<\/u> de la roche (perpendiculaire \u00e0 \u03bb3). La lin\u00e9ation<\/strong> est une ligne dans la roche marquant soit la croissance de nouveaux min\u00e9raux m\u00e9tamorphiques, soit l\u2019allongement de min\u00e9raux pr\u00e9existants. Ce sont des structures typiques des roches m\u00e9tamorphiques<\/u> (d\u00e9formation ductile).\n<\/p>\n<\/div>\n\n\n\n

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\nCollection enti\u00e8re\n<\/h2>\n\n\n\n
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\"\"<\/a><\/figure>\n<\/figure>\n\n\n\n
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\nExemples d’\u00e9chantillon\n<\/h2>\n\n\n\n

\nEchantillon n\u00b0146<\/u>\n<\/h2>\n

\nLa roche<\/a > est un gneiss marqu\u00e9 par de la foliation. On observe des porphyroclastes de feldspath qui forment des ombres de pression.\n<\/p>\n\n\n\n

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