锆石
- 与 锆石 相关的网络例句 [注:此内容来源于网络,仅供参考]
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It is possible that the diamonds all formed 4.3 billion years ago, and later got shoved into younger crystals. Or perhaps diamonds were incorporated into zircons over and over again through some unknown process, in the same place, at different times in history.
这些钻石很可能都是在43亿年前形成的,但是在随后的岁月中,被外力挤压进历史较短的晶体中;又或者可能在同一地点,这些钻石受作用于某些未知的过程,在不同阶段一次又一次的和锆石晶体相融合。
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Given what geologists think the temperature of these zircons was when they formed, that means the diamonds were probably squeezed into being by the pressure of 100-150 kilometres of crustal rock lying above them.
交给地址学家思考的问题是,这些锆石形成时的温度,这意味着钻石很可能被100到150公里厚的地层的压力下被挤压形成的。
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Given what geologists think the temperature of these zircons was when they formed, that means the diamonds were probably squeezed into being by the pressure of 100-150 kilometres of crustal rock lying above them.
假定地质学家所认定的锆石的温度就是指它们成形时需要的温度,那也就是说那些钻石很可能在承受了来自于外部的,厚达100到150公里的地壳岩石的压力后被挤压成形。
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Two groups of ages were obtained, with weighted average 206Pb/238U ages of 973±60Ma for round zircons, and 422±7Ma for prismatic ones, respectively.
对26颗锆石核部和生长边进行28次U-Pb同位素分析,获得两组206Pb/238U年龄,分别为973±60Ma和422±7Ma。
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If nitrogen is present as single atoms, it would hint that the diamonds were produced rapidly and at relatively low temperature - as might happen if the diamonds formed from pockets of graphite in the zircons in a single, rapid event. That would make the diamonds young.
如果氮元素被证实是以单个原子的形式存在,这意味着钻石是在相对低温的环境下快速形成的——对那些由锆石中的石墨矿囊转变成形的钻石来说,如果单一而快速的条件具备,这种情况就很可能会发生,并将证明这些钻石的年代并不久远。
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In addition, there are a significant amount of inherited zircons at the age of ?2.7Ga, which indicates that the granitoids may be the products of remelting of former crustal rocks and the Jiaodong Comples-Group is the major component of the source rocks.
其中存在年龄为2.7Ga左右的继承性锆石,这显示了这些花岗岩类为壳源重熔的产物,而胶东岩群可能为其重要源岩之一。
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The upper intercept age indicats a low limit of crystal age of the zircons and suggests a basaltic volcanic event at 1.8 Ga ago in this area.
其上交点年龄指示了该锆石的最小结晶时代,它表明在18亿年时该地区曾有一次玄武质火山岩事件。
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Because zircons are 8-10 feet below the surface of the earth under the earth, and in addition to local deposits located below the horizon, so that when water is often flooded mines.
因为锆石大多位于表土层下8-10英尺下,且当地的矿床又多位于水平线以下,因此开采时水经常会淹没矿坑。
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Here I reported new structural data to answer above question, including field section observations and geologic map with large scale in a key area, accompanying with detail microstructural observations, quartz C-axial fabric analyses, and tectono-thermogeochronology (40Ar/39Ar and zircon SHRIMP U-Pb method). Taking available previous data into account, following progression is achieved:1. Completely rebuilding the post late-Paleozoic deformation history of the Harlik MountainFive stages of deformation were identified:(1)pre-Permian compression deformation which may have resulted from pre-Permian subduction;(2) earlier Permian post-collision extension;(3) middle Permian west-east directed dextral slip shearing;(4) later Permian nearly N-S compression deformation; and (5) later Cenozoic intra-plate N-S compressional deformation.
本文选择新疆东部哈尔里克山为研究对象,通过详细的野外路线地质构造调查和关键地区大比例尺地质填图,以及室内显微结构观察、石英岩组分析和构造热年代学(Ar-Ar和锆石SHRIMP U-Pb定年)研究,结合前人研究成果,取得了如下新进展:1、系统重建了哈尔里克山晚古生代以来的变形历史识别和确定了该区板块俯冲碰撞阶段的二叠纪以前挤压变形,后碰撞阶段早二叠世伸展变形、中二叠世近东西向右行走滑变形和晚二叠世近南北向挤压变形,以及板内演化阶段的晚新生代南北向挤压变形等5期构造变形事件。
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Zirconolite-rich synroc is ideal solidification material for solidifying high level radioactive waste .
富钙钛锆石型人造岩石将放射性核素固定在其晶格中作为晶体的一部分固定起来,大大提高了放射性废物处置的长期安全性,是固化高放射性废物理想的固化介质。
- 推荐网络例句
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According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.
曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。
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The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.
稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。
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When I was in school, the rabbi explained everythingin the Bible two different ways.
当我上学的时候,老师解释《圣经》用两种不同的方法。