{"id":3604,"date":"2025-09-12T15:33:02","date_gmt":"2025-09-12T18:33:02","guid":{"rendered":"https:\/\/overticeportal.com.br\/?p=3604"},"modified":"2025-09-12T15:59:46","modified_gmt":"2025-09-12T18:59:46","slug":"cristais-sao-encontrados-dentro-de-ovos-de-dinossauros","status":"publish","type":"post","link":"https:\/\/portalam9.com.br\/?p=3604","title":{"rendered":"Cristais s\u00e3o encontrados dentro de ovos de dinossauros"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><em>Tempo de leitura: 2 minutos <\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Uma descoberta impressionante foi feita a partir da an\u00e1lise de f\u00f3sseis de dinossauro localizados no s\u00edtio arqueol\u00f3gico Qinglongshan, na Bacia de Yunyang, na China. Os pesquisadores encontraram cristais dentro de ovos.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">De maneira in\u00e9dita, os materiais foram datados por meio de carbonato de ur\u00e2nio-chumbo (U-Pb), o que revelou que eles t\u00eam aproximadamente 85 milh\u00f5es de anos. As conclus\u00f5es foram descritas em estudo publicado na revista&nbsp;Frontiers in Earth Science<em>.<\/em><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/img.odcdn.com.br\/wp-content\/uploads\/2025\/09\/ovos-dino.jpg\" alt=\"\" class=\"wp-image-1182421\"\/><figcaption class=\"wp-element-caption\">Ovos datam de 85 milh\u00f5es de anos (Imagem: Bi Zhao\/Instituto de Geoci\u00eancias de Hubei)<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-ovos-oferecem-pistas-sobre-o-passado-climatico-da-terra\"><strong>Ovos oferecem pistas sobre o passado clim\u00e1tico da Terra<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Os cientistas explicam que, na \u00e9poca em que os ovos foram preservados, no per\u00edodo&nbsp;Cret\u00e1ceo, a Terra passou por uma&nbsp;atividade vulc\u00e2nica&nbsp;significativa.<\/li>\n\n\n\n<li>A libera\u00e7\u00e3o de gases ocasionou mudan\u00e7as clim\u00e1ticas e qu\u00edmicas, levando \u00e0 perda de oxig\u00eanio no oceano e \u00e0&nbsp;extin\u00e7\u00e3o em massa dos animais.<\/li>\n\n\n\n<li>Os f\u00f3sseis, no entanto, oferecem informa\u00e7\u00f5es sobre as condi\u00e7\u00f5es clim\u00e1ticas de diversas regi\u00f5es naquele tempo.<\/li>\n\n\n\n<li>A Qinglongshan \u00e9 a primeira reserva nacional chinesa que cont\u00e9m restos de ovos de dinossauros.<\/li>\n\n\n\n<li>S\u00e3o mais de tr\u00eas mil exemplares espalhados em tr\u00eas s\u00edtios arqueol\u00f3gicos.<\/li>\n\n\n\n<li>A maioria est\u00e1 escondida em&nbsp;rochas de brechas, siltitos e arenitos.<\/li>\n\n\n\n<li>Os ovos encontrados estavam em perfeitas condi\u00e7\u00f5es, contendo apenas algumas deformidades.<\/li>\n\n\n\n<li>A equipe acredita que eles perten\u00e7am \u00e0 esp\u00e9cie&nbsp;Placoolithus tumiaolingensis.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-dinossauros-tentaram-se-adaptar-as-mudancas-climaticas\"><strong>Dinossauros tentaram se adaptar \u00e0s mudan\u00e7as clim\u00e1ticas<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Durante o processo de data\u00e7\u00e3o, os pesquisadores coletaram a amostra f\u00f3ssil de um dos ovos, repleto de calcita, proveniente de um conjunto de 28 ovos incrustados em siltito contendo brecha. Dessa forma, a equipe descobriu que os ovos foram depositados h\u00e1 aproximadamente 85 milh\u00f5es de anos.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/img.odcdn.com.br\/wp-content\/uploads\/2025\/09\/sitio-arqueologico-china.jpg\" alt=\"\" class=\"wp-image-1182420\"\/><figcaption class=\"wp-element-caption\">F\u00f3sseis foram localizados no s\u00edtio arqueol\u00f3gico Qinglongshan (Imagem: Bi Zhao\/Instituto de Geoci\u00eancias de Hubei)<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Os cientistas explicam que, na era Turoniana (93,9 a 89,8 milh\u00f5es de anos atr\u00e1s), milh\u00f5es de anos antes da deposi\u00e7\u00e3o dos ovos encontrados, havia come\u00e7ado um resfriamento global. A&nbsp;queda de temperatura&nbsp;pode ter contribu\u00eddo para a diminui\u00e7\u00e3o da diversidade de dinossauros, afetando a quantidade de ovos colocados por cada esp\u00e9cie pr\u00e9-hist\u00f3rica no s\u00edtio arqueol\u00f3gico chin\u00eas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O estudo aponta que as estruturas de poros dos dinossauros analisados&nbsp;podem representar adapta\u00e7\u00f5es evolutivas a essa&nbsp;mudan\u00e7a clim\u00e1tica. Agora, a equipe pretende incluir amostras encontradas em diferentes camadas rochosas para construir uma linha do tempo da regi\u00e3o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Fonte: Olhar Digital <strong>\/ <\/strong>Foto: Bi Zhao\/Instituto de Geoci\u00eancias de Hubei<br><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tempo de leitura: 2 minutos Uma descoberta impressionante foi feita a partir da an\u00e1lise de<\/p>\n","protected":false},"author":3,"featured_media":3607,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-3604","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-curiosidades-2"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Cristais s\u00e3o encontrados dentro de ovos de dinossauros - Portal Amazonas 9<\/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:\/\/portalam9.com.br\/?p=3604\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cristais s\u00e3o encontrados dentro de ovos de dinossauros - 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