作者：毕业查重系统 发表时间：2024-01-06 15:02:03 浏览次数：7
Such low levels of sulfate indicate that the Archean atmosphere was virtually devoid of oxygen.───如此低的硫酸盐浓度,表示太古代大气中的氧气极为稀薄.
Their source is the Archean Group.───它们皆为S型,其源岩为太古界.
The Hongtoushan copper - zinc deposit was formed in submarine volcanic eruptions - sedimentary environment in Archean intracratonic rift trough.───红透山式铜 - 锌矿床形成于太古代克拉通裂谷槽盆中海底火山喷发 - 沉积环境.
It is much more complex and difficult to study Archean stratigraphy than Phanerozoic stratigra - phy.───太古宙地层与显生宙地层相比,具有很大的复杂性,研究难度大.
It's 100 % pure natural and is extracted from an archean plant -- Ginkgo Bibloba Tree.───100%纯天然,提取自太古代望族植物 公孙 树.
The nickel mineralization is contained in a layered basic massif surrounded and underlain by an archean gneiss complex.───此处镍矿化产于一层状基性岩块内，其四周和下面都为太古代片麻岩杂岩围绕。
Various geochronometric methods have been applied to dating of important geologic events in complex Archean terranes.───在复杂的太古代地体的重要地质事件定年中已采用了多种地质年龄测定方法.
The redelimited Jiapigou gold - concentrated area is composed of Archean granitoid - greenstone belts and high grade metamorphism areas.───重新界定的夹皮沟金矿集中区包括了太古宙花岗 - 绿岩带和高级变质区两个组成部分.英语使用场景
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Discordances existed between Fangniushan quartzite series and underlying Archean Eon metamorphic granite series, and overlying the Mesoproterozoic Era Xionger Group.
Late Archean and Early Proterozoic were the main period for the formation of continental crust.
Archean rocks stretches35 kilometers along the western edge of the bluish-gray monolith of the Greenland ice cap.
The Archean metamorphic rocks are composed of extrusive rocks and metamorphosed plutonic rocks. The former usually exists as inclusions of various size in the latter.
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