{"id":23,"date":"2017-04-12T15:05:00","date_gmt":"2017-04-12T18:05:00","guid":{"rendered":"http:\/\/wims.wordpress\/?page_id=23"},"modified":"2017-04-12T15:05:00","modified_gmt":"2017-04-12T18:05:00","slug":"destaque","status":"publish","type":"page","link":"https:\/\/wims.igc.usp.br\/?page_id=23&lang=pt","title":{"rendered":"Destaque"},"content":{"rendered":"<h2>Very old stromatolites &#8211; evidence of very old life and waters at 3.7 billion years, LA-ICP-MS; SIMS<\/h2>\n<p>Na Groel\u00e2ndia foram encontrados estromat\u00f3litos mais antigo da Terra (Nutman, 2016, Nature 537). Os dados dos is\u00f3topos de U e Pb (geocronologia) obtidos por espectrometria de massa indicaram que a forma\u00e7\u00e3o desses estromat\u00f3litos ocorreram h\u00e1 3,7 bilh\u00f5es de anos, e trouxeram assinaturas qu\u00edmicas adicionais consistentes com uma origem biol\u00f3gica. Existe certa controv\u00e9rsia no meio cient\u00edfico sobre exist\u00eancia desse micro-organismos arquenos (&gt; 2,5 bilh\u00f5es de anos), pois poucos estromat\u00f3litos cont\u00eam microorgnismos fossilizados\u00a0 mas informa\u00e7\u00f5es sobre a presen\u00e7a da \u00e1gua e a t\u00e9cnica de data\u00e7\u00e3o pelo m\u00e9todo geocronol\u00f3gico U-Pb por meio deespectrometria de massa s\u00e3o\u00a0 extremamente seguras.<\/p>\n<blockquote><p>HAVER\u00c1 UMA SESS\u00c3O ONDE TRATAR\u00c1 DE UMA REUNI\u00c3O CIENT\u00cdFICA SOBRE T\u00c9CNICA DE DATA\u00c7\u00c3O PELO M\u00c9TODO GEOCRONOL\u00d3GICO U-PB POR MEIO DE LA-ICP-MS, SHRIMP E CA-TIMS. PARTICIPANTES CONFIRMADOS \u00a0(GEOLOGIA): IG-USP, UNB, OURO PRETO, UERJ, UNICAMP, ISO-PAR\u00c1<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>Very old stromatolites &#8211; evidence of very old life and waters at 3.7 billion years, LA-ICP-MS; SIMS Na Groel\u00e2ndia foram encontrados estromat\u00f3litos mais antigo da Terra (Nutman, 2016, Nature 537). Os dados dos is\u00f3topos de U e Pb (geocronologia) obtidos por espectrometria de massa indicaram que a forma\u00e7\u00e3o desses estromat\u00f3litos ocorreram h\u00e1 3,7 bilh\u00f5es de [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-23","page","type-page","status-publish","hentry"],"publishpress_future_action":{"enabled":false,"date":"2026-05-23 04:52:29","action":"change-status","newStatus":"draft","terms":[],"taxonomy":"language","extraData":[]},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/wims.igc.usp.br\/index.php?rest_route=\/wp\/v2\/pages\/23","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wims.igc.usp.br\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/wims.igc.usp.br\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/wims.igc.usp.br\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wims.igc.usp.br\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=23"}],"version-history":[{"count":1,"href":"https:\/\/wims.igc.usp.br\/index.php?rest_route=\/wp\/v2\/pages\/23\/revisions"}],"predecessor-version":[{"id":24,"href":"https:\/\/wims.igc.usp.br\/index.php?rest_route=\/wp\/v2\/pages\/23\/revisions\/24"}],"wp:attachment":[{"href":"https:\/\/wims.igc.usp.br\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=23"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}