{"id":6845,"date":"2015-05-24T18:00:51","date_gmt":"2015-05-24T16:00:51","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=6845"},"modified":"2015-05-24T09:14:22","modified_gmt":"2015-05-24T07:14:22","slug":"il-y-a-600-millions-dannees-une-chute-dun-asteroide-a-fait-bouillir-les-oceans-durant-plus-dun-an","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/il-y-a-600-millions-dannees-une-chute-dun-asteroide-a-fait-bouillir-les-oceans-durant-plus-dun-an\/","title":{"rendered":"Il y a 600 millions d&rsquo;ann\u00e9es, une chute d&rsquo;un ast\u00e9ro\u00efde a fait bouillir les oc\u00e9ans durant plus d&rsquo;un an"},"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 class=\"size-10\" style=\"text-align: justify;\">Pas tr\u00e8s fun la vie sur Terre il y a 600 millions d&rsquo;ann\u00e9es. Durant l&rsquo;Had\u00e9en, p\u00e9riode correspondant \u00e0 la petite enfance de la Terre, notre bonne vielle plan\u00e8te \u00e9tait en effet un endroit particuli\u00e8rement propice aux dangers (Had\u00e9en provient d&rsquo;ailleurs de Had\u00e8s, dieux grec des Enfers). Conditions climatiques extr\u00eames ou immenses \u00e9ruptions volcaniques \u00e9taient notamment le lot quotidien \u00e0 la surface du globe.<\/p>\n<p class=\"size-10\" style=\"text-align: justify;\">Une \u00e9tude de l&rsquo;universit\u00e9 de Stanford, et publi\u00e9e dans le journal <em>Geology<\/em><a href=\"http:\/\/geology.gsapubs.org\/content\/early\/2015\/05\/07\/G36665.1.abstract\" target=\"_blank\">,<\/a> s&rsquo;est int\u00e9ress\u00e9e \u00e0 cette p\u00e9riode et aux cons\u00e9quences de la chute de deux ast\u00e9ro\u00efdes, mesurant entre 50 et 100 kilom\u00e8tres chacun.<\/p>\n<p class=\"size-10\" style=\"text-align: justify;\">La catastrophe aurait eu plusieurs cons\u00e9quences. La temp\u00e9rature aurait d&rsquo;abord augment\u00e9 de mani\u00e8re dramatique, atteignant\u2026500 degr\u00e9s. Puis les eaux des oc\u00e9ans se seraient alors mises \u00e0 bouillir durant une ann\u00e9e. L&rsquo;\u00e9vaporation de l&rsquo;oc\u00e9an r\u00e9sultant en une chute brutale du niveau des mers et en l&rsquo;\u00e9rosion des fonds marins.<\/p>\n<p class=\"size-10\" style=\"text-align: justify;\">Pour mener \u00e0 bien leur \u00e9tude, les chercheurs, men\u00e9s par le professeur de g\u00e9ologie Donald Lowe, ont \u00e9tudi\u00e9 \u00ab\u00a0la ceinture de roches vertes\u00a0\u00bb, une formation g\u00e9ologique unique au monde, en Afrique du Sud. A cet endroit, une partie tr\u00e8s vieille de la cro\u00fbte terrestre a surv\u00e9cu. Ils ont ainsi pu d\u00e9terminer que ces \u00e9v\u00e9nements avaient largement affect\u00e9 les esp\u00e8ces microbiennes et le d\u00e9veloppement de la croute terrestre. Difficile en effet\u00a0 pour la vie de se faire une place au soleil, dans ces conditions. Les esp\u00e8ces \u00e9taient constamment balay\u00e9es par des \u00e9v\u00e9nements destructeurs.<\/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 class=\"size-10\" style=\"text-align: justify;\">Des bact\u00e9ries tr\u00e8s r\u00e9sistantes \u00e0 la chaleur auraient cependant surv\u00e9cu, tout comme certaines cr\u00e9atures des fonds marins. Mais d&rsquo;autres auraient impitoyablement \u00e9t\u00e9 \u00e9limin\u00e9es. Ces \u00e9v\u00e9nements auraient consid\u00e9rablement affect\u00e9 l&rsquo;\u00e9volution de la vie sur notre plan\u00e8te. \u00ab\u00a0Vous pouvez imaginer ces ast\u00e9ro\u00efdes comme une d\u00e9broussailleuse g\u00e9ante, coupant des branches de l&rsquo;arbre de l&rsquo;\u00e9volution\u00a0\u00bb, souligne d&rsquo;ailleurs Kevin Zahnle, scientifique de la NASA.<\/p>\n<p class=\"size-10\" style=\"text-align: justify;\">Il convient cependant d&rsquo;\u00eatre particuli\u00e8rement mesur\u00e9 avec ces donn\u00e9es. Les scientifiques appellent eux-m\u00eames \u00e0 la prudence, \u00e9tant donn\u00e9 le peu d&rsquo;\u00e9chantillons Dans l&rsquo;une de ses pr\u00e9c\u00e9dentes \u00e9tudes, Donald Lowe avan\u00e7ait d\u00e9j\u00e0 que l&rsquo;impact d&rsquo;un ast\u00e9ro\u00efde g\u00e9ant avait secou\u00e9 le squelette de la durant plus d&rsquo;une demi-journ\u00e9e. Qui sait quelles mis\u00e8res subies par la Terre va-t-il encore d\u00e9couvrir?<\/p>\n<p class=\"size-10\" style=\"text-align: justify;\"><a href=\"http:\/\/www.laterredufutur.com\/accueil\/\">TDF<\/a><\/p>\n<p style=\"text-align: justify;\">sources :\u00a0<a href=\"http:\/\/www.atlantico.fr\/\" target=\"_blank\">http:\/\/www.atlantico.fr\/<\/a> \/\u00a0<a href=\"http:\/\/www.smithsonianmag.com\/\" target=\"_blank\">http:\/\/www.smithsonianmag.com\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"6845\">(842)<\/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>Pas tr\u00e8s fun la vie sur Terre il y a 600 millions d&rsquo;ann\u00e9es. Durant l&rsquo;Had\u00e9en, p\u00e9riode correspondant \u00e0 la petite&#8230;<\/p>\n","protected":false},"author":1,"featured_media":6846,"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":"","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":[33,19],"tags":[4346,2072,118,154,114,126,241,436,75,308],"class_list":["post-6845","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-archeologie","category-seismes-et-volcans","tag-600-millions","tag-annees","tag-asteroide","tag-chaud","tag-geologie","tag-meteor","tag-ocean","tag-passe","tag-terre","tag-vie","wpcat-33-id","wpcat-19-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/05\/ocean-entrain-de-bouillir.jpg?fit=808%2C606&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-1Mp","jetpack-related-posts":[{"id":19669,"url":"https:\/\/www.laterredufutur.com\/accueil\/une-collision-avec-un-asteroide-lointain-a-donne-un-coup-de-fouet-a-la-biodiversite-terrestre\/","url_meta":{"origin":6845,"position":0},"title":"Une collision avec un ast\u00e9ro\u00efde lointain a donn\u00e9 un coup de fouet \u00e0 la biodiversit\u00e9 terrestre","author":"Admin","date":"5 octobre 2019","format":false,"excerpt":"Il y a environ 466 millions d'ann\u00e9es, il y a eu une collision d'ast\u00e9ro\u00efdes dans la ceinture d'ast\u00e9ro\u00efdes entre Mars et Jupiter. La collision a provoqu\u00e9 la d\u00e9sint\u00e9gration d'un ast\u00e9ro\u00efde majeur, cr\u00e9ant une pluie de poussi\u00e8re dans tout le syst\u00e8me solaire int\u00e9rieur. Cet \u00e9v\u00e9nement s'appelle l'\u00c9v\u00e9nement M\u00e9t\u00e9orique Ordovicien (OME), et\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\/2019\/09\/asteroide.jpg?fit=1000%2C815&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/09\/asteroide.jpg?fit=1000%2C815&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/09\/asteroide.jpg?fit=1000%2C815&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/09\/asteroide.jpg?fit=1000%2C815&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":12062,"url":"https:\/\/www.laterredufutur.com\/accueil\/asteroide-ou-pas-les-dinosaures-devaient-mourir\/","url_meta":{"origin":6845,"position":1},"title":"Ast\u00e9ro\u00efde ou pas, les dinosaures devaient mourir","author":"Admin","date":"12 mai 2016","format":false,"excerpt":"D'apr\u00e8s une nouvelle \u00e9tude publi\u00e9e dans une revue britannique, les dinosaures \u00e9taient d\u00e9j\u00e0 en voie d'extinction quand la collision fatale entre un ast\u00e9ro\u00efde g\u00e9ant et la plan\u00e8te Terre a pr\u00e9cipit\u00e9 leur chute. Longtemps, on a cru que les dinosaures avaient disparu \u00e0 la suite de la chute sur terre d'un\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":18473,"url":"https:\/\/www.laterredufutur.com\/accueil\/le-debat-sur-les-causes-de-la-disparition-des-dinosaures-nest-pas-termine\/","url_meta":{"origin":6845,"position":2},"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":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":6845,"position":3},"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":26733,"url":"https:\/\/www.laterredufutur.com\/accueil\/une-nouvelle-theorie-explique-comment-la-terre-primitive-est-devenue-si-humide\/","url_meta":{"origin":6845,"position":4},"title":"Une nouvelle th\u00e9orie explique comment la Terre primitive est devenue si humide","author":"Admin","date":"3 mars 2025","format":false,"excerpt":"Lorsque la Terre s'est form\u00e9e, elle \u00e9tait trop chaude pour retenir la glace. Cela signifie que toute l'eau pr\u00e9sente sur notre plan\u00e8te doit provenir de sources extraterrestres. Des \u00e9tudes men\u00e9es sur d'anciennes roches terrestres sugg\u00e8rent que de l'eau liquide existait sur Terre d\u00e8s 100 millions d'ann\u00e9es apr\u00e8s la formation du\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\/2025\/03\/pluies.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\/2025\/03\/pluies.jpg?fit=1024%2C1024&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/03\/pluies.jpg?fit=1024%2C1024&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/03\/pluies.jpg?fit=1024%2C1024&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":17876,"url":"https:\/\/www.laterredufutur.com\/accueil\/depuis-lepoque-des-dinosaures-les-impacts-dasteroides-ont-augmente\/","url_meta":{"origin":6845,"position":5},"title":"Depuis l&rsquo;\u00e9poque des dinosaures, les impacts d&rsquo;ast\u00e9ro\u00efdes ont augment\u00e9","author":"Admin","date":"19 janvier 2019","format":false,"excerpt":"Les astronomes pensaient jusqu'\u00e0 pr\u00e9sent que la quantit\u00e9 d'ast\u00e9ro\u00efdes fondant sur la Terre avait diminu\u00e9 d'intensit\u00e9 avec le temps. C'est l'inverse, ont d\u00e9couvert des chercheurs, qui ont publi\u00e9 leurs r\u00e9sultats dans la revue Science jeudi 17 janvier. Le nombre d'ast\u00e9ro\u00efdes ayant frapp\u00e9 la Terre a \u00e9t\u00e9 deux fois et demi\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\/2015\/06\/asteroide_icare.jpg?fit=630%2C447&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/06\/asteroide_icare.jpg?fit=630%2C447&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/06\/asteroide_icare.jpg?fit=630%2C447&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\/6845","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=6845"}],"version-history":[{"count":5,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/6845\/revisions"}],"predecessor-version":[{"id":6857,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/6845\/revisions\/6857"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/6846"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=6845"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=6845"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=6845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}