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地球诞生之初的前5亿年被称为“冥古宙”（Hadean）。顾名思义，这曾被认为是一个如同炼狱般的熔岩火海。然而，地质学家在古老锆石中发现的线索却表明，那时的地球上可能已经有了液态水和零星的陆地。

, authors=null, authorsList=null, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=版权所有，未经授权，不得转载。, copyrightOwner=《科技导报》编辑部, extLink=null, articleAbsUrl=null, sourceXml=zLhuPjnTFYRrXK6degCirQ==, magXml=u2T0DrKIgZIIiDvAg9rs9A==, pdfUrl=null, pdf=nenep222XFiZ1yRVTZNVVw==, pdfFileSize=2689646, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=3mKicZkiMeKb3snZtsR7Ww==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=AU/9fO6lVIz573F/nK05Cw==, mapNumber=null, fund=null)}, authors=[Author(id=1291067669348754136, tenantId=1146029695717560320, journalId=null, articleId=1288421762715075255, orderNo=null, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=null, email=null, emailSecond=null, emailThird=null, correspondingAuthor=null, authorType=null, ext={}, companyList=null)], keywords=null, refs=null, funds=null, companyList=null, figs=[ArticleFig(id=1288421763721708220, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1288421762715075255, language=EN, label=null, caption=null, figureFileSmall=bQOoWuJCD2c6m96K//XysQ==, figureFileBig=3mKicZkiMeKb3snZtsR7Ww==, tableContent=null), ArticleFig(id=1288421763793011389, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1288421762715075255, language=CN, label=null, caption=撞击后的三维数值模拟显示，上地幔在数百千米尺度上翻涌并产生不同成分的熔体：富含玄武岩的区域（紫色），也包含玄武岩含量低的区域（绿色）

（图片来源：澳大利亚科廷大学官网）

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