十亿年的地球历史失踪吗?- 江南体育网页版- - - - -地球科学堆江南电子竞技平台栈交换 最近30从www.hoelymoley.com 2023 - 07 - 10 - t01:38:13z //www.hoelymoley.com/feeds/question/795 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/795 7 十亿年的地球历史失踪吗? 错误 //www.hoelymoley.com/users/284 2014 - 05 - 06 - t03:47:32z 2014 - 05 - 06 - t14:39:13z < p >, < a href = " http://www.geology.wisc.edu/ ~ wiscsims / pdf / Valley_NGeo2014.pdf”rel = " noreferrer " > 4.4的山口水晶是最古老的地球< / >,与晶体的化学——具体地说,内部氧同位素的比率,表明44亿年前地球上的气温会支持液态水,因此也许生活;< a href = " http://en.wikipedia.org/wiki/Age_of_the_Earth " rel = " noreferrer " > < / > 45.4亿岁了。< / p >

According to this xkcd comic, "all the crust older than 3.5 billion years has been recycled into the mantle by subduction."

Stratigraphic Record - all the crust older than 3.5 billion years has been recycled into the mantle by subduction.

Is it true that it is possible there is a roughly one billion years of Earth's history with water present that's unaccounted for, and if so, do we have any reason to believe we'll better understand this time in Earth's history?

 //www.hoelymoley.com/questions/795/-/797 # 797 9 多瑙河的水手回答的是十亿年的地球历史失踪? 多瑙河的水手 //www.hoelymoley.com/users/77 2014 - 05 - 06 - t08:50:57z 2014 - 05 - 06 - t14:39:13z < p >有当年的《科学美国人》上的一篇文章,我读过的波兰版。我现在没有纸,但我认为这是一个:http://www.scientificamerican.com/article/the-oldest-rocks-on-earth/ < a href = " http://www.scientificamerican.com/article/the-oldest-rocks-on-earth/ " > < / > < / p > < p >短描述的发现是:http://news.nationalgeographic.com/news/2014/02/140224-oldest-crust-australia-zircon-science/ < a href = " http://news.nationalgeographic.com/news/2014/02/140224-oldest-crust-australia-zircon-science/ " > < / >。它是关于锆石晶体,到44亿岁。然而,正如这篇文章,发现不是(?)被广泛研究。但这是接受,有岩石已经38亿岁了。< / p > < p >问题是,只有一种特殊的晶体可以在年轻的地球生存的条件,和锆石是其中之一。他们只保留部分的地球的地质历史的信息。所以它不是这样,没有幸存下来的第一个几十亿年,这只是一个特殊的矿物和岩石。是不够回答许多问题,是最重要的,就像生命的起源(但可能没有地质来源会做,因为脆弱的推测pre-cellular生命形式)。然而,我们得到很多有价值的信息,使我们学习许多关于地球历史上的事实之前,我们不知道。

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