{"id":51711,"date":"2026-10-07T04:28:14","date_gmt":"2026-10-07T04:28:14","guid":{"rendered":"https:\/\/voyagiste-madagascar.com\/?p=51711"},"modified":"2026-10-10T03:24:56","modified_gmt":"2026-10-10T03:24:56","slug":"how-madagascar-became-an-island-gondwana","status":"publish","type":"post","link":"https:\/\/voyagiste-madagascar.com\/fr\/how-madagascar-became-an-island-gondwana\/","title":{"rendered":"Comment Madagascar est devenu une \u00eele \u2014 la s\u00e9paration du Gondwana"},"content":{"rendered":"<p><\/p>\n<p style=\"font-size:0.85em;color:#666;font-style:italic;\">Cet article contient des liens affili\u00e9s. Nous pouvons percevoir une petite commission sans frais suppl\u00e9mentaires pour vous si vous r\u00e9servez via ces liens.<\/p>\n<p style=\"color:#777;font-size:0.9em;margin:4px 0 18px;\">Par Jordan Lamont \u00b7 Mis \u00e0 jour le 7 octobre 2026<\/p>\n<div style=\"border:2px solid #1a6b2b;border-radius:10px;padding:16px 20px;margin:20px 0;background:#f6fdf7;\">\n<p><strong>En bref<\/strong><\/p>\n<ul style=\"margin:0;padding-left:18px;\">\n<li><strong>S\u00e9paration de l&rsquo;Afrique :<\/strong> il y a ~165\u2013170 millions d&rsquo;ann\u00e9es<\/li>\n<li><strong>S\u00e9paration de l&rsquo;Inde :<\/strong> il y a ~88 millions d&rsquo;ann\u00e9es<\/li>\n<li><strong>Isol\u00e9 depuis :<\/strong> ~88 millions d&rsquo;ann\u00e9es \u2014 l&rsquo;un des plus anciens laboratoires insulaires de la Terre<\/li>\n<li><strong>R\u00e9sultat :<\/strong> >90 % des mammif\u00e8res et reptiles et >80 % des plantes introuvables ailleurs<\/li>\n<li><strong>Masse d&rsquo;origine :<\/strong> l&rsquo;ancien supercontinent Gondwana<\/li>\n<\/ul>\n<\/div>\n<p><em>\u00c0 prononcer :<\/em> <strong>Gondwana<\/strong> (gond-WA-na), l&rsquo;ancien supercontinent ; on surnomme Madagascar le \u00ab huiti\u00e8me continent \u00bb tant il para\u00eet diff\u00e9rent.<\/p>\n<p>On appelle Madagascar \u00ab le huiti\u00e8me continent \u00bb, et ce n&rsquo;est pas qu&rsquo;un slogan. Les l\u00e9muriens de l&rsquo;\u00eele, ses baobabs, ses cam\u00e9l\u00e9ons et ses oiseaux g\u00e9ants disparus ne sont ni africains ni asiatiques \u2014 ils sont \u00e0 part, parce que la terre qui les porte s&rsquo;est d\u00e9tach\u00e9e de tout le reste avant m\u00eame qu&rsquo;ils n&rsquo;existent. Pour comprendre pourquoi Madagascar est la destination animali\u00e8re la plus \u00e9trange de la plan\u00e8te, il faut remonter pr\u00e8s de 200 millions d&rsquo;ann\u00e9es, au lent \u00e9clatement d&rsquo;un supercontinent.<\/p>\n<h2>Un morceau d&rsquo;un supercontinent disparu<\/h2>\n<p>Madagascar n&rsquo;a jamais \u00ab fait partie de l&rsquo;Afrique \u00bb au sens r\u00e9cent. Il faisait partie du <strong>Gondwana<\/strong>, le vaste supercontinent austral qui r\u00e9unissait autrefois l&rsquo;Afrique, l&rsquo;Am\u00e9rique du Sud, l&rsquo;Antarctique, l&rsquo;Australie et l&rsquo;Inde en une seule masse. Lorsque le Gondwana commen\u00e7a \u00e0 se disloquer, un bloc portant Madagascar, l&rsquo;Inde et l&rsquo;Antarctique s&rsquo;arracha de l&rsquo;Afrique. La roche sous vos pieds dans les hautes terres est plus ancienne que l&rsquo;oc\u00e9an Atlantique.<\/p>\n<h2>Deux s\u00e9parations, \u00e0 quatre-vingts millions d&rsquo;ann\u00e9es d&rsquo;\u00e9cart<\/h2>\n<p>L&rsquo;isolement de Madagascar s&rsquo;est produit en deux actes. D&rsquo;abord, il y a environ <strong>165 \u00e0 170 millions d&rsquo;ann\u00e9es<\/strong>, il se d\u00e9tacha du continent africain, ouvrant le canal du Mozambique qui les s\u00e9pare encore. Longtemps, il resta soud\u00e9 \u00e0 l&rsquo;Inde. Puis, il y a environ <strong>88 millions d&rsquo;ann\u00e9es<\/strong>, l&rsquo;Inde s&rsquo;en d\u00e9tacha \u00e0 son tour et entama sa longue d\u00e9rive vers le nord, en direction de l&rsquo;Asie \u2014 laissant Madagascar seul dans l&rsquo;oc\u00e9an Indien. Deux grands arrachements, s\u00e9par\u00e9s de pr\u00e8s de quatre-vingts millions d&rsquo;ann\u00e9es, mirent l&rsquo;\u00eele \u00e0 la d\u00e9rive comme un monde ind\u00e9pendant.<\/p>\n<h2>L&rsquo;exp\u00e9rience qui a dur\u00e9 88 millions d&rsquo;ann\u00e9es<\/h2>\n<p>Une fois l&rsquo;Inde partie, Madagascar devint un laboratoire clos. Les plantes et animaux \u00e0 bord \u2014 ou qui, plus tard, travers\u00e8rent la mer \u00e0 la nage, sur des radeaux v\u00e9g\u00e9taux ou en volant \u2014 \u00e9volu\u00e8rent presque sans concurrence ni interf\u00e9rence de la vie continentale. Quatre-vingt-huit millions d&rsquo;ann\u00e9es, c&rsquo;est un temps immense pour que l&rsquo;\u00e9volution travaille \u00e0 l&rsquo;abri. Le r\u00e9sultat est l&rsquo;une des plus fortes concentrations de vie end\u00e9mique de la plan\u00e8te : plus de <strong>90 % des mammif\u00e8res et reptiles<\/strong> et plus de <strong>80 % des plantes<\/strong> n&rsquo;existent nulle part ailleurs. Les l\u00e9muriens n&rsquo;eurent jamais \u00e0 rivaliser avec les singes ; les baobabs se diversifi\u00e8rent en esp\u00e8ces introuvables sur tout autre continent.<\/p>\n<h2>Pourquoi la terre elle-m\u00eame a cet aspect<\/h2>\n<p>Ces m\u00eames \u00e9pisodes de rifting ont fa\u00e7onn\u00e9 les paysages que vous traversez. La haute \u00e9chine granitique des <a href=\"https:\/\/voyagiste-madagascar.com\/best-central-highlands-madagascar-2026\/\">hautes terres<\/a> centrales, le spectaculaire escarpement oriental qui capte la pluie, l&rsquo;ouest plus sec et le sud \u00e9pineux \u2014 tout remonte \u00e0 la fa\u00e7on dont l&rsquo;\u00eele fut d\u00e9chir\u00e9e, bascul\u00e9e et \u00e9rod\u00e9e au fil de dizaines de millions d&rsquo;ann\u00e9es. La g\u00e9ographie de Madagascar n&rsquo;est pas le fruit du hasard ; c&rsquo;est le fossile d&rsquo;une s\u00e9paration continentale.<\/p>\n<h2>Pourquoi cela compte aujourd&rsquo;hui<\/h2>\n<p>Cette histoire des temps profonds a un tranchant tr\u00e8s actuel. Tout ce qui rend Madagascar extraordinaire \u2014 les <a href=\"https:\/\/voyagiste-madagascar.com\/masoala-wildlife-lemurs-2026\/\">l\u00e9muriens<\/a>, les cam\u00e9l\u00e9ons, les for\u00eats \u2014 est le produit de 88 millions d&rsquo;ann\u00e9es impossibles \u00e0 rejouer. Une fois une esp\u00e8ce end\u00e9mique disparue, aucun continent voisin ne peut la remplacer. C&rsquo;est pourquoi la conservation, ici, p\u00e8se d&rsquo;un poids qu&rsquo;elle n&rsquo;a pas ailleurs. Planifiez <a href=\"https:\/\/voyagiste-madagascar.com\/best-time-to-visit-madagascar-2026\/\">quand partir<\/a>, et utilisez notre <a href=\"https:\/\/voyagiste-madagascar.com\/madagascar-travel-resources\/\">guide de voyage Madagascar<\/a> pour d\u00e9couvrir une \u00eele qui est, au sens propre, un monde \u00e0 part.<\/p>\n<h2>FAQ<\/h2>\n<h3>Quand Madagascar s&rsquo;est-il s\u00e9par\u00e9 de l&rsquo;Afrique ?<\/h3>\n<p>Il y a environ 165 \u00e0 170 millions d&rsquo;ann\u00e9es, lorsque le supercontinent Gondwana a commenc\u00e9 \u00e0 se fracturer.<\/p>\n<h3>Quand s&rsquo;est-il d\u00e9tach\u00e9 de l&rsquo;Inde ?<\/h3>\n<p>Il y a environ 88 millions d&rsquo;ann\u00e9es \u2014 Madagascar est une \u00eele isol\u00e9e depuis lors.<\/p>\n<h3>Pourquoi Madagascar est-il si unique sur le plan biologique ?<\/h3>\n<p>Environ 88 millions d&rsquo;ann\u00e9es d&rsquo;isolement ont laiss\u00e9 la vie \u00e9voluer \u00e0 part : plus de 90 % de ses mammif\u00e8res et reptiles et plus de 80 % de ses plantes n&rsquo;existent nulle part ailleurs.<\/p>\n<h3>Madagascar est-il la plus vieille \u00eele ?<\/h3>\n<p>C&rsquo;est l&rsquo;une des plus anciennes grandes \u00eeles de la Terre, s\u00e9par\u00e9e depuis tr\u00e8s longtemps de tout continent \u2014 ce qui explique pr\u00e9cis\u00e9ment l&rsquo;originalit\u00e9 de sa faune.<\/p>\n<div style=\"border:1px solid #ddd;border-radius:8px;padding:16px;margin:24px 0;background:#fafafa;\">\n<p><strong>Assurance voyage pour Madagascar<\/strong><\/p>\n<p>Une \u00e9vacuation m\u00e9dicale depuis l&rsquo;int\u00e9rieur de Madagascar peut co\u00fbter entre 30 000 et 80 000 USD ; il vaut donc la peine de pr\u00e9voir une couverture m\u00e9dicale de voyage avant de partir. SafetyWing est le partenaire que nous mentionnons sur ce site \u2014 une assurance m\u00e9dicale de voyage par abonnement mensuel. <a href=\"https:\/\/safetywing.com\/?referenceID=26510814&#038;utm_source=26510814&#038;utm_medium=Ambassador\" target=\"_blank\" rel=\"nofollow sponsored\">Consultez les offres de SafetyWing<\/a>.<\/p>\n<\/div>\n<div style=\"border-top:1px solid #eee;margin-top:28px;padding-top:12px;font-size:0.85em;color:#666;\">\n<p style=\"margin:0 0 4px;\"><strong>R\u00e9f\u00e9rences<\/strong><\/p>\n<ul style=\"margin:0;padding-left:18px;\">\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Wildlife_of_Madagascar\" target=\"_blank\" rel=\"nofollow noopener\">Wikipedia \u2014 Wildlife of Madagascar<\/a><\/li>\n<li><a href=\"https:\/\/earthsky.org\/earth\/madagascar-island-split-in-two-rift\/\" target=\"_blank\" rel=\"nofollow noopener\">EarthSky \u2014 Madagascar, the island split by time<\/a><\/li>\n<\/ul>\n<\/div>\n<div style=\"border:2px solid #1a6b2b;border-radius:10px;padding:20px 24px;margin:32px 0 16px;background:#f6fdf7;\">\n<h3 style=\"margin-top:0;color:#0a3d1f;\">Planifiez Votre Voyage \u00e0 Madagascar<\/h3>\n<ul style=\"margin:4px 0 12px;padding-left:18px;\">\n<li><a href=\"https:\/\/voyagiste-madagascar.com\/madagascar-travel-resources\/\">Lire le guide de voyage complet Madagascar<\/a><\/li>\n<li><a href=\"https:\/\/voyagiste-madagascar.com\/madagascar-itineraries\/\">Explorer les itin\u00e9raires par style et dur\u00e9e<\/a><\/li>\n<li><a href=\"https:\/\/voyagiste-madagascar.com\/nosy-be-madagascar-travel-guide-the-ultimate-luxury-island-escape\/\">Explorer le guide complet de la destination<\/a><\/li>\n<\/ul>\n<p style=\"margin:8px 0 4px;\"><strong>O\u00f9 Dormir<\/strong><\/p>\n<ul style=\"margin:4px 0;padding-left:18px;\">\n<li><a href=\"https:\/\/voyagiste-madagascar.com\/best-hotels-nosy-be\/\">Meilleurs h\u00f4tels \u00e0 Madagascar \u2014 v\u00e9rifier les disponibilit\u00e9s<\/a><\/li>\n<li><a href=\"https:\/\/voyagiste-madagascar.com\/eco-tourism-lodges-in-madagascar-sustainable-travel-at-its-best\/\">Eco-lodges dans les parcs nationaux<\/a><\/li>\n<\/ul>\n<\/div>\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Madagascar s&rsquo;est s\u00e9par\u00e9 de l&rsquo;Afrique il y a ~165 millions d&rsquo;ann\u00e9es et de l&rsquo;Inde il y a ~88 millions d&rsquo;ann\u00e9es. Cet isolement explique que 90 % de sa faune n&rsquo;existe nulle part ailleurs.<\/p>\n","protected":false},"author":1,"featured_media":51735,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[214],"tags":[199],"class_list":["post-51711","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-insider-madagascar","tag-role-traffic"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Comment Madagascar est devenu une \u00eele \u2014 la s\u00e9paration du Gondwana &#183; Voyagiste Madagascar<\/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:\/\/voyagiste-madagascar.com\/how-madagascar-became-an-island-gondwana\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Comment Madagascar est devenu une \u00eele \u2014 la s\u00e9paration du Gondwana &#183; Voyagiste Madagascar\" \/>\n<meta property=\"og:description\" content=\"[:en]Madagascar split from Africa ~165 million years ago and from India ~88 million years ago. That deep-time isolation is why 90% of its wildlife lives nowhere else.[:fr]Madagascar s&#039;est s\u00e9par\u00e9 de l&#039;Afrique il y a ~165 millions d&#039;ann\u00e9es et de l&#039;Inde il y a ~88 millions d&#039;ann\u00e9es. Cet isolement explique que 90 % de sa faune n&#039;existe nulle part ailleurs.[:]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/voyagiste-madagascar.com\/how-madagascar-became-an-island-gondwana\/\" \/>\n<meta property=\"og:site_name\" content=\"Voyagiste Madagascar\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/VMadagascar\/?ref=ts\" \/>\n<meta property=\"article:published_time\" content=\"2026-10-07T04:28:14+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-10T03:24:56+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/voyagiste-madagascar.com\/wp-content\/uploads\/2026\/10\/madagascar-4153968.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"864\" \/>\n\t<meta property=\"og:image:height\" content=\"1300\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Jordan Lamont\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Jordan Lamont\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"8 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/voyagiste-madagascar.com\\\/how-madagascar-became-an-island-gondwana\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/voyagiste-madagascar.com\\\/how-madagascar-became-an-island-gondwana\\\/\"},\"author\":{\"name\":\"Jordan Lamont\",\"@id\":\"https:\\\/\\\/voyagiste-madagascar.com\\\/#\\\/schema\\\/person\\\/be9de3e1c446df79c787e82eac1d707f\"},\"headline\":\"Comment Madagascar est devenu une \u00eele \u2014 la s\u00e9paration du Gondwana\",\"datePublished\":\"2026-10-07T04:28:14+00:00\",\"dateModified\":\"2026-10-10T03:24:56+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/voyagiste-madagascar.com\\\/how-madagascar-became-an-island-gondwana\\\/\"},\"wordCount\":1695,\"publisher\":{\"@id\":\"https:\\\/\\\/voyagiste-madagascar.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/voyagiste-madagascar.com\\\/how-madagascar-became-an-island-gondwana\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/voyagiste-madagascar.com\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/madagascar-4153968.jpg\",\"keywords\":[\"traffic\"],\"articleSection\":[\"Insider Madagascar\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/voyagiste-madagascar.com\\\/how-madagascar-became-an-island-gondwana\\\/\",\"url\":\"https:\\\/\\\/voyagiste-madagascar.com\\\/how-madagascar-became-an-island-gondwana\\\/\",\"name\":\"Comment Madagascar est devenu une \u00eele \u2014 la s\u00e9paration du Gondwana &#183; 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That deep-time isolation is why 90% of its wildlife lives nowhere else.[:fr]Madagascar s'est s\u00e9par\u00e9 de l'Afrique il y a ~165 millions d'ann\u00e9es et de l'Inde il y a ~88 millions d'ann\u00e9es. Cet isolement explique que 90 % de sa faune n'existe nulle part ailleurs.[:]","og_url":"https:\/\/voyagiste-madagascar.com\/how-madagascar-became-an-island-gondwana\/","og_site_name":"Voyagiste Madagascar","article_publisher":"https:\/\/www.facebook.com\/VMadagascar\/?ref=ts","article_published_time":"2026-10-07T04:28:14+00:00","article_modified_time":"2026-10-10T03:24:56+00:00","og_image":[{"width":864,"height":1300,"url":"https:\/\/voyagiste-madagascar.com\/wp-content\/uploads\/2026\/10\/madagascar-4153968.jpg","type":"image\/jpeg"}],"author":"Jordan Lamont","twitter_card":"summary_large_image","twitter_misc":{"\u00c9crit par":"Jordan Lamont","Dur\u00e9e de lecture estim\u00e9e":"8 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/voyagiste-madagascar.com\/how-madagascar-became-an-island-gondwana\/#article","isPartOf":{"@id":"https:\/\/voyagiste-madagascar.com\/how-madagascar-became-an-island-gondwana\/"},"author":{"name":"Jordan Lamont","@id":"https:\/\/voyagiste-madagascar.com\/#\/schema\/person\/be9de3e1c446df79c787e82eac1d707f"},"headline":"Comment Madagascar est devenu une \u00eele \u2014 la s\u00e9paration du Gondwana","datePublished":"2026-10-07T04:28:14+00:00","dateModified":"2026-10-10T03:24:56+00:00","mainEntityOfPage":{"@id":"https:\/\/voyagiste-madagascar.com\/how-madagascar-became-an-island-gondwana\/"},"wordCount":1695,"publisher":{"@id":"https:\/\/voyagiste-madagascar.com\/#organization"},"image":{"@id":"https:\/\/voyagiste-madagascar.com\/how-madagascar-became-an-island-gondwana\/#primaryimage"},"thumbnailUrl":"https:\/\/voyagiste-madagascar.com\/wp-content\/uploads\/2026\/10\/madagascar-4153968.jpg","keywords":["traffic"],"articleSection":["Insider Madagascar"],"inLanguage":"fr-FR"},{"@type":"WebPage","@id":"https:\/\/voyagiste-madagascar.com\/how-madagascar-became-an-island-gondwana\/","url":"https:\/\/voyagiste-madagascar.com\/how-madagascar-became-an-island-gondwana\/","name":"Comment Madagascar est devenu une \u00eele \u2014 la s\u00e9paration du Gondwana &#183; 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