{"id":1053,"date":"2025-07-28T14:32:06","date_gmt":"2025-07-28T12:32:06","guid":{"rendered":"https:\/\/www.minesparis.psl.eu\/musee\/?page_id=1053"},"modified":"2026-08-27T17:02:20","modified_gmt":"2026-08-27T15:02:20","slug":"les-roches","status":"publish","type":"page","link":"https:\/\/www.minesparis.psl.eu\/musee\/le-musee\/collections\/les-roches\/","title":{"rendered":"Les roches"},"content":{"rendered":"\n<div class=\"container block-full-largeur\">\n\t<div class=\"row mt-4\">\n\t\t<div class=\"col-md-12\">\n\t\t\t<h2>La collection de roches au sein du Mus\u00e9e<\/h2>\n\t\t<\/div>\n\t<\/div>\n<\/div>\n\n\n<div class=\"container bloc-50-50\">\n\t<div class=\"row mt-4\">\n\t\t<div class=\"col-md-6\">\n\t\t\t<p style=\"text-align: justify\">D&rsquo;une collection riche de plus d&rsquo;une centaine d&rsquo;esp\u00e8ces, les roches sont rassembl\u00e9es dans leur salle d\u00e9di\u00e9e : la Salle F. Plus de 200 \u00e9chantillons de roches sont visibles au sein du Mus\u00e9e.<\/p>\n<p style=\"text-align: justify\">Les roches sont tr\u00e8s importantes dans l&rsquo;industrie. Elles jouent un r\u00f4le cl\u00e9 pour nos infrastructures et dans nos habitations, puisque c&rsquo;est \u00e0 partir d&rsquo;elles que l&rsquo;on obtient les granulats (graviers), composants principaux de celles-ci. Leurs natures varient suivant les utilisations.<\/p>\n<p style=\"text-align: justify\">Plus sp\u00e9cifiquement, le sable, une roche s\u00e9dimentaire meuble, le calcaire ou les argiles sont des ingr\u00e9dients indispensables \u00e0 la fabrication du b\u00e9ton.<\/p>\n<p style=\"text-align: justify\">Aujourd&rsquo;hui, bien que les enseignements min\u00e9ralogiques et g\u00e9ologiques ne soient plus prodigu\u00e9s \u00e0 l&rsquo;Ecole des Mines, d&rsquo;autres \u00e9tablissements d&rsquo;enseignement (lyc\u00e9es, universit\u00e9s de sp\u00e9cialit\u00e9s en g\u00e9ologie) viennent profiter de cette salle p\u00e9dagogique.<\/p>\n<p style=\"text-align: justify\">Les collections continuent d&rsquo;ailleurs de s&rsquo;enrichir. L&rsquo;accueil du public et la transmission du savoir sont au c\u0153ur des missions du Mus\u00e9e, ainsi que la recherche. Domaine d&rsquo;actualit\u00e9, les roches sont omnipr\u00e9sentes dans notre soci\u00e9t\u00e9 et leur exploitation sujets de controverses, dont certains trait\u00e9s au sein m\u00eame de l&rsquo;Ecole.<\/p>\n<p style=\"text-align: justify\">\n\t\t<\/div>\n\t\t<div class=\"col-md-6\">\n\t\t\t<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3726\" src=\"https:\/\/www.minesparis.psl.eu\/musee\/wp-content\/uploads\/sites\/29\/2026\/08\/Cuvier-Brongniart_Copyright_ENSMP_Gaillou_IMG_5357-300x200.jpg\" alt=\"\" width=\"580\" height=\"387\" srcset=\"https:\/\/www.minesparis.psl.eu\/musee\/wp-content\/uploads\/sites\/29\/2026\/08\/Cuvier-Brongniart_Copyright_ENSMP_Gaillou_IMG_5357-300x200.jpg 300w, https:\/\/www.minesparis.psl.eu\/musee\/wp-content\/uploads\/sites\/29\/2026\/08\/Cuvier-Brongniart_Copyright_ENSMP_Gaillou_IMG_5357-1024x683.jpg 1024w, https:\/\/www.minesparis.psl.eu\/musee\/wp-content\/uploads\/sites\/29\/2026\/08\/Cuvier-Brongniart_Copyright_ENSMP_Gaillou_IMG_5357-768x512.jpg 768w, https:\/\/www.minesparis.psl.eu\/musee\/wp-content\/uploads\/sites\/29\/2026\/08\/Cuvier-Brongniart_Copyright_ENSMP_Gaillou_IMG_5357-1536x1024.jpg 1536w, https:\/\/www.minesparis.psl.eu\/musee\/wp-content\/uploads\/sites\/29\/2026\/08\/Cuvier-Brongniart_Copyright_ENSMP_Gaillou_IMG_5357-1300x867.jpg 1300w, https:\/\/www.minesparis.psl.eu\/musee\/wp-content\/uploads\/sites\/29\/2026\/08\/Cuvier-Brongniart_Copyright_ENSMP_Gaillou_IMG_5357.jpg 1800w\" sizes=\"auto, (max-width: 580px) 100vw, 580px\" \/><\/p>\n<p style=\"text-align: justify\"><em>Roches s\u00e9dimentaires typiques du Bassin parisien, r\u00e9colt\u00e9es et \u00e9tudi\u00e9es par le pal\u00e9ontologue Georges Cuvier (1769-1832), dans la collection de l&rsquo;Ecole des Mines de Paris. <span class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u x1yc453h\" dir=\"auto\">\u00a9 Mus\u00e9e de Min\u00e9ralogie Mines Paris \u2013 PSL \/ E. Gaillou.<\/span>\u00a0<\/em><\/p>\n\t\t<\/div>\n\t<\/div>\n<\/div>\n\n\n<div class=\"container block-full-largeur\">\n\t<div class=\"row mt-4\">\n\t\t<div class=\"col-md-12\">\n\t\t\t<hr \/>\n\t\t<\/div>\n\t<\/div>\n<\/div>\n\n\n<div class=\"container block-full-largeur\">\n\t<div class=\"row mt-4\">\n\t\t<div class=\"col-md-12\">\n\t\t\t<h2 style=\"text-align: justify;\">Qu&rsquo;est-ce qu&rsquo;une roche?<\/h2>\n<p>Les roches constituent la couche solide externe de la Terre (la cro\u00fbte) ainsi que la majeure partie de son int\u00e9rieur, \u00e0 l&rsquo;exception du noyau externe liquide et des poches de magma localis\u00e9es. Une roche est un agr\u00e9gat d\u2019un ou plusieurs types de min\u00e9raux\u00a0; certaines roches sont compos\u00e9es enti\u00e8rement de mati\u00e8re vitreuse, ou d\u2019un m\u00e9lange de verre naturel et de min\u00e9raux. Si la majorit\u00e9 des roches sont relativement dures, certaines sont tr\u00e8s friables (comme la craie) voire meubles comme le sable.<\/p>\n<p>Suivant leur mode de formation, les roches se classent dans trois cat\u00e9gories : les roches s\u00e9dimentaires, magmatiques et m\u00e9tamorphiques.<\/p>\n\t\t<\/div>\n\t<\/div>\n<\/div>\n\n\n<div class=\"container block-full-largeur\">\n\t<div class=\"row mt-4\">\n\t\t<div class=\"col-md-12\">\n\t\t\t<hr \/>\n\t\t<\/div>\n\t<\/div>\n<\/div>\n\n\n<div class=\"container block-full-largeur\">\n\t<div class=\"row mt-4\">\n\t\t<div class=\"col-md-12\">\n\t\t\t<h2>Les roches sont class\u00e9es en trois grandes familles<\/h2>\n\t\t<\/div>\n\t<\/div>\n<\/div>\n\n\n<div class=\"container bloc-50-50\">\n\t<div class=\"row mt-4\">\n\t\t<div class=\"col-md-6\">\n\t\t\t<h3 style=\"text-align: justify\"><strong>1- Les roches s\u00e9dimentaires<\/strong><\/h3>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify\">Les roches s\u00e9dimentaires forment par la consolidation de s\u00e9diments accumul\u00e9s ou d\u00e9pos\u00e9s \u00e0 la surface de la Terre. Les s\u00e9diments sont des particules constitu\u00e9es de min\u00e9raux (d\u00e9tritus g\u00e9ologiques) et \/ ou de mati\u00e8re organique (d\u00e9tritus biologiques). La s\u00e9dimentation est le proc\u00e9d\u00e9 d\u00e9nommant la mise en place des s\u00e9diments. Le gr\u00e8s, le calcaire ou encore le charbon sont des roches s\u00e9dimentaires.<\/p>\n\t\t<\/div>\n\t\t<div class=\"col-md-6\">\n\t\t\t<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3725\" src=\"https:\/\/www.minesparis.psl.eu\/musee\/wp-content\/uploads\/sites\/29\/2026\/08\/Calcaire1_Copyright_ENSMP_Gaillou_02-300x225.jpg\" alt=\"\" width=\"580\" height=\"435\" srcset=\"https:\/\/www.minesparis.psl.eu\/musee\/wp-content\/uploads\/sites\/29\/2026\/08\/Calcaire1_Copyright_ENSMP_Gaillou_02-300x225.jpg 300w, https:\/\/www.minesparis.psl.eu\/musee\/wp-content\/uploads\/sites\/29\/2026\/08\/Calcaire1_Copyright_ENSMP_Gaillou_02-1024x768.jpg 1024w, https:\/\/www.minesparis.psl.eu\/musee\/wp-content\/uploads\/sites\/29\/2026\/08\/Calcaire1_Copyright_ENSMP_Gaillou_02-768x576.jpg 768w, https:\/\/www.minesparis.psl.eu\/musee\/wp-content\/uploads\/sites\/29\/2026\/08\/Calcaire1_Copyright_ENSMP_Gaillou_02-1536x1152.jpg 1536w, https:\/\/www.minesparis.psl.eu\/musee\/wp-content\/uploads\/sites\/29\/2026\/08\/Calcaire1_Copyright_ENSMP_Gaillou_02-1300x975.jpg 1300w, https:\/\/www.minesparis.psl.eu\/musee\/wp-content\/uploads\/sites\/29\/2026\/08\/Calcaire1_Copyright_ENSMP_Gaillou_02.jpg 1800w\" sizes=\"auto, (max-width: 580px) 100vw, 580px\" \/><\/p>\n<p style=\"text-align: justify\"><em>Calcaire de l&rsquo;Eoc\u00e8ne du Bassin parisien (ENSMP R982). <span class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u x1yc453h\" dir=\"auto\">\u00a9 Mus\u00e9e de Min\u00e9ralogie Mines Paris \u2013 PSL \/ E. Gaillou.<\/span>\u00a0<\/em><\/p>\n\t\t<\/div>\n\t<\/div>\n<\/div>\n\n\n<div class=\"container bloc-50-50\">\n\t<div class=\"row mt-4\">\n\t\t<div class=\"col-md-6\">\n\t\t\t<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3290\" src=\"https:\/\/www.minesparis.psl.eu\/musee\/wp-content\/uploads\/sites\/29\/2026\/08\/granite-300x200.png\" alt=\"\" width=\"580\" height=\"387\" srcset=\"https:\/\/www.minesparis.psl.eu\/musee\/wp-content\/uploads\/sites\/29\/2026\/08\/granite-300x200.png 300w, https:\/\/www.minesparis.psl.eu\/musee\/wp-content\/uploads\/sites\/29\/2026\/08\/granite.png 547w\" sizes=\"auto, (max-width: 580px) 100vw, 580px\" \/><\/p>\n<p style=\"text-align: justify\"><em>Granite (roche magmatique intrusive) provenant de Lannion en Bretagne (ENSMP 80580). <span class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u x1yc453h\" dir=\"auto\">\u00a9 Mus\u00e9e de Min\u00e9ralogie Mines Paris \u2013 PSL \/ E. Gaillou.<\/span>\u00a0<\/em><\/p>\n\t\t<\/div>\n\t\t<div class=\"col-md-6\">\n\t\t\t<h3><strong>2- Les roches magmatiques<\/strong><\/h3>\n<p>&nbsp;<\/p>\n<p>Les roches magmatiques (aussi appel\u00e9es roches ign\u00e9es) sont form\u00e9es par refroidissement et solidification de magma ou de lave. La solidification en roche se fait soit en profondeur sous forme de roches intrusives (comme le granite) ou \u00e0 la surface, sous forme de roches extrusives (comme le basalte).<\/p>\n\t\t<\/div>\n\t<\/div>\n<\/div>\n\n\n<div class=\"container bloc-50-50\">\n\t<div class=\"row mt-4\">\n\t\t<div class=\"col-md-6\">\n\t\t\t<h3><strong>3- Roches m\u00e9tamorphiques<\/strong><\/h3>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify;\">Les roches m\u00e9tamorphiques sont le r\u00e9sultat de la transformation de roches pr\u00e9existantes en nouveau type de roches par le proc\u00e9d\u00e9 de m\u00e9tamorphisme. Lors de cette transformation, la roche reste principalement \u00e0 l\u2019\u00e9tat solide mais recristallise graduellement donnant une nouvelle texture et composition min\u00e9rale. La roche originelle, appel\u00e9e protolithe, peut \u00eatre l\u2019une des trois types de roches\u00a0: s\u00e9dimentaire, magmatique, et m\u00eame m\u00e9tamorphique. Suivant la nature du protolithe et les conditions de pression et temp\u00e9rature subies, la roche m\u00e9tamorphique r\u00e9sultante poss\u00e8de une texture et chimie caract\u00e9ristique.<\/p>\n\t\t<\/div>\n\t\t<div class=\"col-md-6\">\n\t\t\t<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3714\" src=\"https:\/\/www.minesparis.psl.eu\/musee\/wp-content\/uploads\/sites\/29\/2026\/08\/80645_02_Gneiss_metam_Copyright_ENSMP-Gaillou-300x200.jpg\" alt=\"\" width=\"580\" height=\"387\" srcset=\"https:\/\/www.minesparis.psl.eu\/musee\/wp-content\/uploads\/sites\/29\/2026\/08\/80645_02_Gneiss_metam_Copyright_ENSMP-Gaillou-300x200.jpg 300w, https:\/\/www.minesparis.psl.eu\/musee\/wp-content\/uploads\/sites\/29\/2026\/08\/80645_02_Gneiss_metam_Copyright_ENSMP-Gaillou-1024x683.jpg 1024w, https:\/\/www.minesparis.psl.eu\/musee\/wp-content\/uploads\/sites\/29\/2026\/08\/80645_02_Gneiss_metam_Copyright_ENSMP-Gaillou-768x512.jpg 768w, https:\/\/www.minesparis.psl.eu\/musee\/wp-content\/uploads\/sites\/29\/2026\/08\/80645_02_Gneiss_metam_Copyright_ENSMP-Gaillou-1536x1024.jpg 1536w, https:\/\/www.minesparis.psl.eu\/musee\/wp-content\/uploads\/sites\/29\/2026\/08\/80645_02_Gneiss_metam_Copyright_ENSMP-Gaillou-1300x867.jpg 1300w, https:\/\/www.minesparis.psl.eu\/musee\/wp-content\/uploads\/sites\/29\/2026\/08\/80645_02_Gneiss_metam_Copyright_ENSMP-Gaillou.jpg 1600w\" sizes=\"auto, (max-width: 580px) 100vw, 580px\" \/><\/p>\n<p style=\"text-align: justify;\"><em>Gneiss provenant de Ocna de Fier en Rouamine (ENSMP 80645). <span class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u x1yc453h\" dir=\"auto\">\u00a9 Mus\u00e9e de Min\u00e9ralogie Mines Paris \u2013 PSL \/ E. Gaillou.<\/span>\u00a0<\/em><\/p>\n\t\t<\/div>\n\t<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":4,"featured_media":3718,"parent":283,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1053","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Les roches - Mus\u00e9e de Min\u00e9ralogie<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.minesparis.psl.eu\/musee\/le-musee\/collections\/les-roches\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Les roches - Mus\u00e9e de Min\u00e9ralogie\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.minesparis.psl.eu\/musee\/le-musee\/collections\/les-roches\/\" \/>\n<meta property=\"og:site_name\" content=\"Mus\u00e9e de Min\u00e9ralogie\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-27T15:02:20+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/mines.feelandclic.dev\/musee\/wp-content\/uploads\/sites\/15\/2026\/08\/MG_5553_peridotite_basalte_Copyright_ENSMP_Gaillou_16-9.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.minesparis.psl.eu\\\/musee\\\/le-musee\\\/collections\\\/les-roches\\\/\",\"url\":\"https:\\\/\\\/www.minesparis.psl.eu\\\/musee\\\/le-musee\\\/collections\\\/les-roches\\\/\",\"name\":\"Les roches - 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