{"id":2071,"date":"2023-12-19T11:47:38","date_gmt":"2023-12-19T10:47:38","guid":{"rendered":"https:\/\/svt-dalaine.fr\/svt\/?page_id=2071"},"modified":"2024-12-17T10:56:37","modified_gmt":"2024-12-17T09:56:37","slug":"st-h-la-mesure-du-temps-outils-et-methodes","status":"publish","type":"page","link":"https:\/\/svt-dalaine.fr\/svt\/st-h-la-mesure-du-temps-outils-et-methodes\/","title":{"rendered":"ST-H La mesure du temps: outils et m\u00e9thodes"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"2071\" class=\"elementor elementor-2071\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1f9c63f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1f9c63f\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f55838b\" data-id=\"f55838b\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-fc797c0 elementor-widget elementor-widget-image\" data-id=\"fc797c0\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"640\" height=\"520\" src=\"https:\/\/svt-dalaine.fr\/svt\/wp-content\/uploads\/2023\/12\/Capture-decran-2023-12-19-114802.png\" class=\"attachment-large size-large wp-image-2075\" alt=\"\" srcset=\"https:\/\/svt-dalaine.fr\/svt\/wp-content\/uploads\/2023\/12\/Capture-decran-2023-12-19-114802.png 951w, https:\/\/svt-dalaine.fr\/svt\/wp-content\/uploads\/2023\/12\/Capture-decran-2023-12-19-114802-300x244.png 300w, https:\/\/svt-dalaine.fr\/svt\/wp-content\/uploads\/2023\/12\/Capture-decran-2023-12-19-114802-768x624.png 768w, https:\/\/svt-dalaine.fr\/svt\/wp-content\/uploads\/2023\/12\/Capture-decran-2023-12-19-114802-332x270.png 332w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-317ca99 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"317ca99\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-370fe15\" data-id=\"370fe15\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-46a152d elementor-widget elementor-widget-text-editor\" data-id=\"46a152d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Extrait du B.O.<\/p><p>La d\u00e9finition d\u2019une unit\u00e9 stratigraphique se traduit par le choix d\u2019une r\u00e9f\u00e9rence appel\u00e9e stratotype.<\/p><p>Les crises biologiques correspondent \u00e0 des rep\u00e8res dans l&#8217;histoire de la Terre, permettant de d\u00e9finir des coupures \u00e0 l&#8217;\u00e9chelle mondiale.<\/p><p>Elles affectent la diversit\u00e9 du monde vivant \u00e0 l&#8217;\u00e9chelle globale et sont toujours suivies de radiations \u00e9volutives.<\/p><p>Les causes de ces extinctions sont souvent multiples et peuvent r\u00e9sulter d&#8217;un couplage entre l&#8217;activit\u00e9 interne de la Terre et de la surface.<\/p><p>La datation absolue, fond\u00e9e essentiellement sur la radiochronologie, donne acc\u00e8s \u00e0 l\u2019\u00e2ge absolu et \u00e9talonne l\u2019\u00e9chelle stratigraphique.<\/p><p>L\u2019\u00e9chelle chronostratigraphique r\u00e9sulte de la mise en coh\u00e9rence entre les donn\u00e9es issues de la chronologie relative et de la chronologie absolue.<\/p><p>On associe des \u00e2ges absolus \u00e0 des successions d&#8217;intervalles de temps.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Extrait du B.O. La d\u00e9finition d\u2019une unit\u00e9 stratigraphique se traduit par le choix d\u2019une r\u00e9f\u00e9rence appel\u00e9e stratotype. Les crises biologiques correspondent \u00e0 des rep\u00e8res dans l&#8217;histoire de la Terre, permettant de d\u00e9finir des coupures \u00e0 l&#8217;\u00e9chelle mondiale. Elles affectent la&hellip;&nbsp;<a href=\"https:\/\/svt-dalaine.fr\/svt\/st-h-la-mesure-du-temps-outils-et-methodes\/\" class=\"more-link\">Lire la suite<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-2071","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.9.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>ST-H La mesure du temps: outils et m\u00e9thodes - Bienvenue sur le site de Sciences de la Vie et de la Terre<\/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:\/\/svt-dalaine.fr\/svt\/st-h-la-mesure-du-temps-outils-et-methodes\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ST-H La mesure du temps: outils et m\u00e9thodes - Bienvenue sur le site de Sciences de la Vie et de la Terre\" \/>\n<meta property=\"og:description\" content=\"Extrait du B.O. La d\u00e9finition d\u2019une unit\u00e9 stratigraphique se traduit par le choix d\u2019une r\u00e9f\u00e9rence appel\u00e9e stratotype. Les crises biologiques correspondent \u00e0 des rep\u00e8res dans l&#8217;histoire de la Terre, permettant de d\u00e9finir des coupures \u00e0 l&#8217;\u00e9chelle mondiale. 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La d\u00e9finition d\u2019une unit\u00e9 stratigraphique se traduit par le choix d\u2019une r\u00e9f\u00e9rence appel\u00e9e stratotype. Les crises biologiques correspondent \u00e0 des rep\u00e8res dans l&#8217;histoire de la Terre, permettant de d\u00e9finir des coupures \u00e0 l&#8217;\u00e9chelle mondiale. 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