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   ndsr同位素 的翻译结果: 查询用时:0.015秒
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ndsr同位素
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  nd-sr isotope
     The Shaxi sodic quartz diorite-porphyrites have the geochemical chara cteristics as adakite,such as high Al 2 O 3 ,Sr,Sr /Y and La /Yb,low Y and Yb,Sr positive anomaly,and Eu weakly negative abnomaly or positive abnormaly; their characteristics o f trace elements and the composition of Nd-Sr isotope are similar to those of the Shuangmiao Formation basalts in Luzong volcanic basin.
     沙溪石英闪长玢岩具有高Al2O3、Sr、Sr/Y、La/Yb,低Y、YbSr正异常,Eu弱负异常—正异常,表现出与adakite岩类似的地球化学特征,与庐枞火山盆地双庙组粗面玄武岩的微量元素特征和NdSr同位素组成类似。
短句来源
  相似匹配句对
     Nd-Sr ISOTOPE STUDY OF CRETACEOUS MAGMATIC ROCKS FROM FUJlAN PROVINCE
     福建省白垩纪岩浆岩NdSr同位素研究
短句来源
     STUDY ON THE Nd Sr ISOTOPIC COMPOSITIONS OF GRANITOIDS IN SE CHINA
     中国东南部花岗岩类Nd-Sr同位素研究
短句来源
     CRUSTAL EVOLUTION IN ANHUI:Nd AND Sr ISOTOPIC EVIDENCE
     安徽的地壳演化:Sr,Nd同位素证据
短句来源
     Sr-Nd ISOTOPE GEOCHEMISTRY OF FLUORITES-A REVIEW
     萤石SrNd同位素地球化学研究评述
短句来源
     Genesis of Sr-Nd isotopic characteristics of igneous rocks in Inner Mongolia
     内蒙古火成岩Sr-Nd同位素特征及成因
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  nd-sr isotope
The Nd-Sr isotope study of Mesozoic granitoids in Jiangxi Province
      
Nd-Sr isotope geological study on the age of Armantai ophiolite, Xinjiang, China
      
However, comparison of the Navan hydrothermal gangue Nd-Sr isotope data with data from Lower Palaeozoic rocks strongly suggests that the latter cannot alone account for the "basement" signature.
      
There is a relatively well-constrained array on a Nd-Sr isotope correlation plot that can be explained by two-component mixing of Kauai tholeiite magma and a small amount of melt of East Pacific Rise source rock.
      
Nd-Sr isotope composition of lower crustal xenoliths - Evidence for the origin of mid-tertiary felsic volcanics in Mexico
      
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The characteristics of Nd-Sr isotopes of the Yanshanian magmatic rocks, distributed in the southern part of Anhui province and northeastern part of Jiangxi province,and tectonically attached to the Jiangnan Rise,were studied in the paper.The results showed that the Yanshanian granitoids and granitic porphyries in southern Anhui and the Yanshanian granitoids in northeastern Jiangxi came mainly from the crust,and the source area included some mantle matters.The Yanshanian granitic porphyries in northeastern Jiangxi...

The characteristics of Nd-Sr isotopes of the Yanshanian magmatic rocks, distributed in the southern part of Anhui province and northeastern part of Jiangxi province,and tectonically attached to the Jiangnan Rise,were studied in the paper.The results showed that the Yanshanian granitoids and granitic porphyries in southern Anhui and the Yanshanian granitoids in northeastern Jiangxi came mainly from the crust,and the source area included some mantle matters.The Yanshanian granitic porphyries in northeastern Jiangxi had a characteristics of mantle source-type.So the polymetal deposits which related to the Yanshanian magmatic rocks in northeastern Jiangxi were developed better than those in southern Anhui.The research results of Nd-Sr isotopes were confirmed by the studies of geophysical survey,metallogenetic tectonic setting,basement tectonics and rare earth elements at the same time.

江南隆起带皖南地区与赣东北地区燕山期岩浆岩NdSr同位素特征的对比研究表明,皖南燕山期花岗岩体、斑岩体及赣东北燕山期花岗岩与赣东北燕山期斑岩体在成岩物质来源上具有明显差异。皖南燕山期花岗岩和斑岩体及赣东北燕山期花岗岩成岩物质以壳源为主,成岩物质来源区夹有一定的幔源物质,而赣东北燕山期斑岩体则具有幔源特征,这是赣东北地区燕山期与岩浆岩有关的多金属矿床发育、而皖南地区不发育的重要原因。NdSr同位素的研究结果与地球物理、成岩构造背景和稀土元素等研究结果相吻合。

 
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