最古老的火成岩发现在哪里?- 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 - 08 - 16 - t22:40:06z //www.hoelymoley.com/feeds/question/12440 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/12440 3 最古老的火成岩发现在哪里? 基蒂 //www.hoelymoley.com/users/11239 2017 - 10 - 08 - t14:54:52z 2019 - 06 - 26 - t03:02:05z < p >我想补上我的作业对地球科学,但我有一个困难的时间寻找一个回答我的问题。< / p江南体育网页版 > //www.hoelymoley.com/questions/12440/-/12441 # 12441 6 bandybabboon回答的最古老的火成岩发现在哪里? bandybabboon //www.hoelymoley.com/users/3315 2017 - 10 - 08 - t17:39:34z 2017 - 10 - 08 - t17:47:39z < p >锆石来自澳大利亚4.4 ga,也许从加拿大岛4.5 ga玄武岩。< / p >

It would interest you to know the quest of Boston University geochemist Matthew Jackson, who is searching for the oldest basalt and mantle rock that exists.

His work isn't entirely agreed upon, as they are using all kinds of difficult isotopes which are a subject of controversy. Probably the most current information on early basalts are the claims and counter claims relating to Matthew Jackson in published articles, which have a lot of chemistry in them.

http://news.nationalgeographic.com/news/2010/08/100812-worlds-oldest-rocks-magma-earth-nature-science/

https://www.bu.edu/today/2012/little-rock-at-center-of-big-controversy/

https://scholar.google.fr/scholar?hl=en&as_sdt=0%2C5&q=tungsten+basalt++oldest&btnG=

"We've been looking for pieces of the mantle that might have survived the chaotic mixing and churning within the deep Earth," said Boston University geochemist Matthew Jackson.

"We found rocks that reached the surface some 62 million years ago—suggest a whole reservoir of the primordial rock could still lie somewhere beneath the Arctic"

There are moon basalts from 3.7 Ga years ago, they are a bit mysterious, and lunar plagioclase feldspar at 4.5, appear to have formed when feldspar crystallized and floated to the top of a global magma ocean that surrounded the Moon soon after it formed.

//www.hoelymoley.com/questions/12440/-/12451 # 12451 1 答案由Obiwan KeNoobie最古老的火成岩在哪里发现? Obiwan KeNoobie //www.hoelymoley.com/users/11242 2017 - 10 - 09 - t20:15:52z 2017 - 10 - 09 - t20:15:52z < p >我记得年前关于钻石看纪录片,他们发现在非洲南部的地方。显然他们是夹杂物在大陆上最古老的岩石,这可以说填补一些很大的烟囱在年轻的岩石,垂直向下。< / p > < p >所以你至少会有一些地球上最古老的岩石。< / p > //www.hoelymoley.com/questions/12440/-/12456 # 12456 1 Gabija回答的最古老的火成岩发现在哪里? Gabija //www.hoelymoley.com/users/11156 2017 - 10 - 11 - t07:03:53z 2017 - 10 - 11 - t07:03:53z < p >前面回答关于古老地壳的证据是正确的,但如果你正在寻找最古老的火成岩,是一个形成于42亿年前的变质花岗岩类岩石。根据维基百科,Acasta片麻岩是英云闪长岩片麻岩在西北地区的奴隶克拉通,加拿大。露头的岩石变质3.58至40.31亿年前,是地球上最古老的完整的地壳碎片。< / p > //www.hoelymoley.com/questions/12440/-/12471 # 12471 0 HammerKid073回答的最古老的火成岩发现在哪里? HammerKid073 //www.hoelymoley.com/users/10947 2017 - 10 - 13 - t03:38:12z 2017 - 10 - 13 - t03:38:12z < p > @comprehensible所说,<强>锆石< /强>杰克山的<强>最早材料(4.4 Ga) < / >强表明大陆性火成岩地球上已经出现在这一时期。注意,这些锆石变质砾岩床内被发现。< / p > < p >然而,如果我们谈论的是岩石(聚合的物质),那么<强> Nuvvuagittuq绿岩带(或多或少4.28 Ga) < /强>在加拿大代表了最古老的地壳,也给了我们地球上最古老的岩石。< / p > < p >干杯!< / p > //www.hoelymoley.com/questions/12440/-/17303 # 17303 0 alanmurrie回答的最古老的火成岩发现在哪里? alanmurrie //www.hoelymoley.com/users/17225 2019 - 06 - 26 - t03:02:05z 2019 - 06 - 26 - t03:02:05z < blockquote > < p >研究区域是最古老的地质单元前寒武纪结晶(变质岩和火成岩)岩石,形成一个地下室在古生代,中生代和新生代岩石和沉积物。前寒武纪岩石的年龄范围从1.7到25亿年,并被侵蚀温柔起伏的平原的古生代(悲痛,1996)。前寒武纪岩石是高度可变的,但主要由火成岩组成或metasedimentary岩石、片岩和杂砂岩等。古生代和中生代岩石沉积近水平床。后继拉拉米造山运动期间和相关侵蚀暴露了前寒武纪岩石在黑山的水晶核心,古生代和中生代沉积岩中公开大致同心环围绕的核心。拉拉米造山运动期间变形导致了无数的骨折,折叠,在黑山和其他特性。三级侵入活动也导致岩石破裂在北方许多入侵存在的黑山。< / p >

Geologic Setting by USGS Publications Warehouse

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