Constraints of REE and trace elements of high-pressure-veins and host rocks in western Tianshan on origin of deep fluids in paleosubduction zones
文献类型：期刊论文
| 作者 | Huang, DZ; Gao, J; Dai, TG |
| 刊名 | JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY
 |
| 出版日期 | 2005-04-01 |
| 卷号 | 12期号:2页码:192-198 |
| 关键词 | Rare Earth Elements Trace Element Fluid In Paleosubduction Zone High-pressure Vein Host Rock Western Tianshan |
| ISSN号 | 1005-9784 |
| 文献子类 | Article |
| 英文摘要 | The western Tianshan high-pressure (HP) metamorphic belt represents the paleosubduction melange of paleozoic south Tianshan ocean between the Yili-central Tianshan and Tarim plates. High-pressure veins are extensively developed in this HP belt. Compared with normal mid-ocean ridge basalt (N-MORB), the high-pressure veins and host rocks are enriched in light rare earth elements (LREE) and incompatible elements. But high-pressure veins show a larger variation than host rocks in total REE abundance. On the trace element spidergram, all the samples are enriched in incompatible elements and show strong positive Pb anomaly relative to N-MORB. The array tendency lines of plots of the HP rocks have apparent slopes on diagram of m(Sr) vs m(Sr)/m(Zr), m(Li) vs m(Li)/m(Y) and m(Ce) vs m(Ce)/m(Pb), which indicates that the enrichment in LREE and incompatible elements relative to N-MORB of the HP-metamorphic rocks from western Tianshan is not attributed to magma evolution process of the protolith. High field strength elements, such as Nb, Ta, Ti, Zr and Hf, do not show negative anomaly relative to N-MORB, which is dissimilar to that of island arc basalts. Therefore, the enrichment in LREE and incompatible elements of the HP rocks is not attributed to the enrichment of the source of the protolith. The mass ratios of Rb to Ba, Cc to Pb, Nb to U and Ta to U of high-pressure veins and host rocks are intermediate of mid-ocean ridge basalt or oceanic island basalt and continental crust. The fluids in western Tianshan paleosubduction zones are mixtures of two sources, dehydration or devolatilization of host rocks and of subducted sediments. |
| WOS关键词 | NORTHWESTERN CHINA ; CONTINENTAL-CRUST ; ARC LAVAS ; ISOTOPE ; MANTLE ; ECLOGITIZATION ; COMPLEX ; ND |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000229029000018 |
| 出版者 | JOURNAL OF CENTRAL SOUTH UNIV TECHNOLOGY |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/65595]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Huang, DZ |
| 作者单位 | 1.Cent S Univ, Sch Geosci & Environm Engn, Changsha 410083, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, DZ,Gao, J,Dai, TG. Constraints of REE and trace elements of high-pressure-veins and host rocks in western Tianshan on origin of deep fluids in paleosubduction zones[J]. JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY,2005,12(2):192-198. |
| APA | Huang, DZ,Gao, J,&Dai, TG.(2005).Constraints of REE and trace elements of high-pressure-veins and host rocks in western Tianshan on origin of deep fluids in paleosubduction zones.JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY,12(2),192-198. |
| MLA | Huang, DZ,et al."Constraints of REE and trace elements of high-pressure-veins and host rocks in western Tianshan on origin of deep fluids in paleosubduction zones".JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY 12.2(2005):192-198. |
入库方式： OAI收割
来源：地质与地球物理研究所
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