Solidot: 地球上最古老的岩石在澳大利亚

Solidot

奇客的资讯，重要的东西

地球上最古老的岩石在澳大利亚
http://solidot.org.feedsportal.com/c/33236/f/556826/s/3774b165/sc/17/l/0L0Ssolidot0Borg0Cstory0Dsid0F38463/story01.htm
Feb 24th 2014, 08:24

根据发表在《Nature Geoscience》上的研究报告，地球演化早期阶段的唯一物理证据来自锆石，科学家使用原子探针断层摄影术精确测定了在澳大利亚西部发现的古代锆石晶体的日期，发现它们距今达43.74亿年，是至今发现的最古老地球岩石。这项研究暗示地球形成地壳的时间远早于之前的推测。地月系统形成于45亿年前一次巨大撞击事件，这颗岩石距离早期的岩浆海洋阶段仅仅相隔1亿年。This entry passed through the Full-Text RSS service — if this is your content and you're reading it on someone else's site, please read the FAQ at fivefilters.org/content-only/faq.php#publishers.



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