{"id":12062,"date":"2016-05-12T00:00:39","date_gmt":"2016-05-11T22:00:39","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=12062"},"modified":"2016-05-03T18:51:08","modified_gmt":"2016-05-03T16:51:08","slug":"asteroide-ou-pas-les-dinosaures-devaient-mourir","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/asteroide-ou-pas-les-dinosaures-devaient-mourir\/","title":{"rendered":"Ast\u00e9ro\u00efde ou pas, les dinosaures devaient mourir"},"content":{"rendered":"<div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"1\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n<p style=\"text-align: justify;\">D&rsquo;apr\u00e8s une nouvelle \u00e9tude publi\u00e9e dans une revue britannique, les dinosaures \u00e9taient d\u00e9j\u00e0 en voie d&rsquo;extinction quand la collision fatale entre un ast\u00e9ro\u00efde g\u00e9ant et la plan\u00e8te Terre a pr\u00e9cipit\u00e9 leur chute.<\/p>\n<p style=\"text-align: justify;\">Longtemps, on a cru que les dinosaures avaient disparu \u00e0 la suite de la chute sur terre d&rsquo;un ast\u00e9ro\u00efde de 10 kilom\u00e8tres de large. Mais \u00e7a, c&rsquo;\u00e9tait avant. D&rsquo;apr\u00e8s les conclusions d&rsquo;une \u00e9tude publi\u00e9e dans la revue Proceedings of the National Academy of Sciences, l&rsquo;extinction des dinosaures \u00e9taient d\u00e9j\u00e0 \u00e0 l&rsquo;oeuvre bien avant ce cataclysme plan\u00e9taire.<\/p>\n<p style=\"text-align: justify;\">L&rsquo;ast\u00e9ro\u00efde principal supect, mais&#8230;<br \/>\nSelon cette \u00e9tude, 40 millions d&rsquo;ann\u00e9es (!) avant la chute fatale d&rsquo;un ast\u00e9ro\u00efde sur la p\u00e9ninsule du Yucatan au Mexique, plusieurs esp\u00e8ces de dinosaures avaient d\u00e9j\u00e0 commenc\u00e9 \u00e0 dispara\u00eetre, l&rsquo;apparition de nouvelles esp\u00e8ces ne suffisant pas \u00e0 assurer leur survie \u00e0 long terme. \u00ab\u00a0Nous ne nous attendions pas \u00e0 ce r\u00e9sultat, a indiqu\u00e9 l&rsquo;un des auteurs de l&rsquo;\u00e9tude, Manabu Sakamoto, pal\u00e9ontologue \u00e0 l&rsquo;universit\u00e9 britannique de Reading. L&rsquo;impact de l&rsquo;ast\u00e9ro\u00efde est toujours le principal suspect pour l&rsquo;extinction des dinosaures, mais il est clair qu&rsquo;ils n&rsquo;\u00e9taient d\u00e9j\u00e0 plus dans la fleur de l&rsquo;\u00e2ge au sens de l&rsquo;\u00e9volution.\u00a0\u00bb<\/p><div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"2\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n\n<p style=\"text-align: justify;\">D&rsquo;apr\u00e8s les chercheurs, les dinosaures v\u00e9g\u00e9tariens, dont le fameux diplodocus au tr\u00e8s long cou, furent les premiers \u00e0 d\u00e9cliner. Les carnivores, comme le redoutable tyrannosaurus rex, r\u00e9sistaient mieux, mais leur population s&rsquo;amenuisait \u00e9galement quand l&rsquo;ast\u00e9ro\u00efde g\u00e9ant a frapp\u00e9 la Terre.<\/p>\n<p style=\"text-align: justify;\">Une tr\u00e8s longue extinction<\/p>\n<p style=\"text-align: justify;\">C&rsquo;est la forte activit\u00e9 volcanique, et la s\u00e9paration des plaques continentales qui en d\u00e9coulait, qui auraient entre autres facteurs contribu\u00e9 \u00e0 acc\u00e9l\u00e9rer la disparition des plus \u00e9normes animaux terrestres que la Terre ait jamais port\u00e9. \u00ab\u00a0Cela sugg\u00e8re que pendant des dizaines de millions d&rsquo;ann\u00e9es avant leur ultime tr\u00e9pas, les dinosaures avaient commenc\u00e9 \u00e0 perdre de leur superbe en tant qu&rsquo;esp\u00e8ces dominantes sur Terre\u00a0\u00bb, conclut Manabu Sakamoto.<\/p>\n<p style=\"text-align: justify;\">Ce n&rsquo;est pas la premi\u00e8re fois qu&rsquo;une nouvelle th\u00e8se est avanc\u00e9e pour expliquer la disparition des dinosaures. En 2014, sans renier la th\u00e8se de l&rsquo;ast\u00e9ro\u00efde, dont la chute a entra\u00een\u00e9 la cr\u00e9ation du crat\u00e8re de Chicxulub, des chercheurs avaient \u00e9voqu\u00e9 l&rsquo;apparition de pluies acides, qui auraient contribu\u00e9 \u00e0 la disparition de 80% des esp\u00e8ces vivantes.<\/p>\n<p style=\"text-align: justify;\">source :\u00a0<a href=\"http:\/\/www.lexpress.fr\/insolite\/asteroide-ou-pas-les-dinosaures-devaient-mourir_1784088.html\" target=\"_blank\">http:\/\/www.lexpress.fr\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"12062\">(877)<\/p>\n<!--CusAds0-->\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>D&rsquo;apr\u00e8s une nouvelle \u00e9tude publi\u00e9e dans une revue britannique, les dinosaures \u00e9taient d\u00e9j\u00e0 en voie d&rsquo;extinction quand la collision fatale&#8230;<\/p>\n","protected":false},"author":1,"featured_media":10318,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"ngg_post_thumbnail":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"Ast\u00e9ro\u00efde ou pas, les #dinosaures devaient mourir @laterredufutur","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[33],"tags":[2412,1206,1609,431,528,5799,5798],"class_list":["post-12062","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-archeologie","tag-declin","tag-dinosaures","tag-disparition","tag-etudes","tag-extinction","tag-lente-disparition","tag-mourir","wpcat-33-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/01\/dinosaures.jpg?fit=620%2C493&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-38y","jetpack-related-posts":[{"id":18473,"url":"https:\/\/www.laterredufutur.com\/accueil\/le-debat-sur-les-causes-de-la-disparition-des-dinosaures-nest-pas-termine\/","url_meta":{"origin":12062,"position":0},"title":"Le d\u00e9bat sur les causes de la disparition des dinosaures n&rsquo;est pas termin\u00e9","author":"Admin","date":"24 f\u00e9vrier 2019","format":false,"excerpt":"Il y a 66 millions d'ann\u00e9es la Terre \u00e9tait travers\u00e9e par au moins deux \u00e9normes catastrophes: une chute de m\u00e9t\u00e9orite et des \u00e9ruptions volcaniques massives. De nouveaux travaux apportent des \u00e9l\u00e9ments contradictoires sur la chronologie de ces tragiques \u00e9v\u00e9nements. Les dinosaures \u00e9taient-ils condamn\u00e9s \u00e0 dispara\u00eetre avant m\u00eame l'entr\u00e9e d'un ast\u00e9ro\u00efde\u2026","rel":"","context":"Dans &quot;Arch\u00e9ologie&quot;","block_context":{"text":"Arch\u00e9ologie","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/archeologie\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/01\/dinosaures.jpg?fit=620%2C493&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/01\/dinosaures.jpg?fit=620%2C493&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/01\/dinosaures.jpg?fit=620%2C493&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":27262,"url":"https:\/\/www.laterredufutur.com\/accueil\/comment-la-mort-des-dinosaures-a-reorganise-la-terre\/","url_meta":{"origin":12062,"position":1},"title":"Comment la mort des dinosaures a r\u00e9organis\u00e9 la Terre","author":"Admin","date":"21 septembre 2025","format":false,"excerpt":"Les dinosaures ont eu un impact si immense sur la Terre que leur extinction soudaine a entra\u00een\u00e9 des changements \u00e0 grande \u00e9chelle dans les paysages, y compris la forme des rivi\u00e8res, et ces changements se refl\u00e8tent dans les archives g\u00e9ologiques, selon une \u00e9tude de l'Universit\u00e9 du Michigan. Les scientifiques reconnaissent\u2026","rel":"","context":"Dans &quot;Arch\u00e9ologie&quot;","block_context":{"text":"Arch\u00e9ologie","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/archeologie\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/10\/dinosaure_asteroide.jpg?fit=1024%2C415&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/10\/dinosaure_asteroide.jpg?fit=1024%2C415&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/10\/dinosaure_asteroide.jpg?fit=1024%2C415&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/10\/dinosaure_asteroide.jpg?fit=1024%2C415&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":26176,"url":"https:\/\/www.laterredufutur.com\/accueil\/des-traces-de-la-catastrophe-des-dinosaures-trouvees-dans-les-genes-des-oiseaux-actuels\/","url_meta":{"origin":12062,"position":2},"title":"Des traces de la catastrophe des dinosaures trouv\u00e9es dans les g\u00e8nes des oiseaux actuels","author":"Admin","date":"27 ao\u00fbt 2024","format":false,"excerpt":"Un ast\u00e9ro\u00efde s'est violemment \u00e9cras\u00e9 sur notre plan\u00e8te il y a quelque 66 millions d'ann\u00e9es et a chang\u00e9 le cours de la vie sur Terre. La r\u00e9action en cha\u00eene des changements survenus dans le monde entier a marqu\u00e9 la fin des jours des dinosaures qui y vivaient \u00e0 cette \u00e9poques.\u2026","rel":"","context":"Dans &quot;Arch\u00e9ologie&quot;","block_context":{"text":"Arch\u00e9ologie","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/archeologie\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/08\/lasteroide-de-Chicxulub.jpg?fit=1024%2C1024&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/08\/lasteroide-de-Chicxulub.jpg?fit=1024%2C1024&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/08\/lasteroide-de-Chicxulub.jpg?fit=1024%2C1024&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/08\/lasteroide-de-Chicxulub.jpg?fit=1024%2C1024&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":26204,"url":"https:\/\/www.laterredufutur.com\/accueil\/lasteroide-qui-a-tue-les-dinosaures-venait-dau-dela-de-jupiter\/","url_meta":{"origin":12062,"position":3},"title":"L&rsquo;ast\u00e9ro\u00efde qui a tu\u00e9 les dinosaures venait d&rsquo;au-del\u00e0 de Jupiter","author":"Admin","date":"4 septembre 2024","format":false,"excerpt":"Des indices chimiques laiss\u00e9s dans le crat\u00e8re d'impact peuvent aider \u00e0 retracer les origines de la m\u00e9t\u00e9orite. L'ast\u00e9ro\u00efde meurtrier le plus embl\u00e9matique de la Terre provient des confins du syst\u00e8me solaire, rapportent des chercheurs dans la revue Science du 16 ao\u00fbt. Il y a environ 66 millions d'ann\u00e9es, un ast\u00e9ro\u00efde\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/08\/meteorite-de-Chicxulub-sur-le-Yucatan.jpg?fit=1024%2C1024&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/08\/meteorite-de-Chicxulub-sur-le-Yucatan.jpg?fit=1024%2C1024&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/08\/meteorite-de-Chicxulub-sur-le-Yucatan.jpg?fit=1024%2C1024&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/08\/meteorite-de-Chicxulub-sur-le-Yucatan.jpg?fit=1024%2C1024&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":14758,"url":"https:\/\/www.laterredufutur.com\/accueil\/des-scientifiques-vont-forer-le-cratere-laisse-par-lasteroide-qui-a-mis-fin-aux-dinosaures\/","url_meta":{"origin":12062,"position":4},"title":"Des scientifiques vont forer le crat\u00e8re laiss\u00e9 par l&rsquo;ast\u00e9ro\u00efde qui a mis fin aux dinosaures","author":"Admin","date":"24 f\u00e9vrier 2017","format":false,"excerpt":"Avec l\u2019objectif de mieux comprendre les conditions de disparition des dinosaures sur Terre et la renaissance ult\u00e9rieure de la vie, des scientifiques vont lancer une op\u00e9ration de forage du crat\u00e8re de Chicxulub, laiss\u00e9 par l\u2019ast\u00e9ro\u00efde qui a mis fin au r\u00e8gne des dinosaures. Situ\u00e9 dans la p\u00e9ninsule du Yucat\u00e1n au\u2026","rel":"","context":"Dans &quot;Arch\u00e9ologie&quot;","block_context":{"text":"Arch\u00e9ologie","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/archeologie\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/02\/cratere-yukatan-dinosaures.jpg?fit=1200%2C675&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/02\/cratere-yukatan-dinosaures.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/02\/cratere-yukatan-dinosaures.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/02\/cratere-yukatan-dinosaures.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/02\/cratere-yukatan-dinosaures.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":27298,"url":"https:\/\/www.laterredufutur.com\/accueil\/quest-il-arrive-a-lasteroide-qui-a-tue-les-dinosaures\/","url_meta":{"origin":12062,"position":5},"title":"Qu&rsquo;est-il arriv\u00e9 \u00e0 l&rsquo;ast\u00e9ro\u00efde qui a tu\u00e9 les dinosaures ?","author":"Admin","date":"3 octobre 2025","format":false,"excerpt":"Il y a environ 66 millions d'ann\u00e9es, un ast\u00e9ro\u00efde tueur s'est \u00e9cras\u00e9 sur la Terre \u00e0 43 000 km\/h. O\u00f9 se trouve-t-il aujourd'hui ? Il y a environ 66 millions d'ann\u00e9es, le r\u00e8gne des dinosaures prit fin brutalement. Un ast\u00e9ro\u00efde d'environ 12 kilom\u00e8tres de diam\u00e8tre , volant \u00e0 43 000\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/09\/asteroide-tueur-Chicxulub.webp?fit=650%2C366&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/09\/asteroide-tueur-Chicxulub.webp?fit=650%2C366&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/09\/asteroide-tueur-Chicxulub.webp?fit=650%2C366&ssl=1&resize=525%2C300 1.5x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/12062","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/comments?post=12062"}],"version-history":[{"count":2,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/12062\/revisions"}],"predecessor-version":[{"id":12064,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/12062\/revisions\/12064"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/10318"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=12062"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=12062"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=12062"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}