太古宇
- 网络archean;Archaean;Archean Eonothem
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变质岩SHRIMP锆英石U-Pb年龄十分复杂,除有少量太古宇形成的锆英石外,还存在大量元古宇至显生宇的锆英石,并在2000Ma,1200Ma,800Ma,400Ma,200Ma左右形成峰期。
The SHRIMP zircon U-Pb ages are very complex ; except for small amount of Archean zircon , there are also significant amounts of Proterozoic to Phanerozoic zircon . The metamorphic peaks occurred at - 1 200 , 800 , 400 and 200 Ma .
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鲁西地区沿寒武系/太古宇不整合面滑脱构造的主要特征及形成机制
Main characteristics of the decollement structures along the cambrian / archean unconformity surface in western Shandong
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地层主要为中太古宇-下元古宇上壳岩及古侵入体变质岩。
The formation mainly is shell under rocks and intrusive rocks of the Archean-Proterozoic .
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美国密执安州马奎特县罗彼斯金矿&一个太古宇容矿的脉金矿床
The Ropes Gold Mine , Marquette County , Michigan , U.S.A. & An Archean Hosted Gold Deposit
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国内外太古宇中金矿床的地质及地球化学特征对比兼成因分析
Geological and geochemical comparison between Archean gold deposits in China and those from other countries , with discussion on Genesis
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以测井资料、岩心化验及试油资料为基础,研究了辽河坳陷太古宇古潜山基性侵入岩脉对内幕油气成藏的影响。
The impact of basic intrusive dyke on hydrocarbon accumulation inside the Archaeozoic buried hill in Liaohe Depression is studied on the basis of logging data , core test and oil testing data .
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构造破碎带附近古生界底部和太古宇顶部出现破碎带,表现为高孔隙度、高渗透率带。
Near the d é collement structure surface , at the bottom of the Cambrian and the top of the Archean , developed an interjacent fractured zone which shows high porosity and high permeability .
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中国陆壳铀、钍、钾元素整体丰度值明显高于太古宇地壳,反映中国陆壳成分演化程度较高。
These data indicate that the abundances of the radioactive elements U , Th and K in continental crust of China are notably higher than those in the Archean crust , suggesting that the components of continental crust of China are highly evolved .