Nd isotopic characteristics of Proterozoic metasedimentary rocks and constraints on their provenance in the eastern segment of Central Tianshan Belt, Xinjiang
文献类型：期刊论文
| 作者 | Li, QG; Liu, SW; Han, BF; Zhang, J; Chu, ZY |
| 刊名 | PROGRESS IN NATURAL SCIENCE
 |
| 出版日期 | 2003-12-01 |
| 卷号 | 13期号:12页码:908-913 |
| 关键词 | Nd isotopic features metasedimentary rocks Xingxingxia group provenance and forming time Tectonic setting the ESCTB of Xinjiang |
| ISSN号 | 1002-0071 |
| 文献子类 | Article |
| 英文摘要 | Sm-Nd isotopic characteristics, epsilon(Nd)(t) values and Nd model ages ( T-DM) of Proterozoic metasedimentary rocks in the eastern segment of Central Tianshan Belt (ESCTB), Xinjiang, are used to constrain the sedimentary provenance as well as to evaluate their tectonic implications. epsilon(Nd)(t) and T-DM values of these samples range from -4.00 to +6.36 and from 1.29 to 2.29 Ga, respectivety. These feature values are distinguished from those of Archean Tarim Craton. Their average epsilon(Nd)(t) values of the Weiya, the Kumishi and the south to the Dikar samples are -2.46, +2.06 and +1.37, respectively. Nd model ages of the Weiya samples vary between 1.86 and 2.29 Ga, but those of the Kumishi and the south to the Dikar samples show a significant concentration at 1.6 similar to 1.9 Ga and the youngest Nd model age is 1.29 Ga. Those Nd isotopic characteristics suggest that these metasedimentary rocks could be derived from a significant proportion of Paleoproterozoic crustal source and a participation of young arc materials, rather than Archean Tarim Craton. Furthermore, the data also indicate that these two sources were paleogeographically separated. Thus we can deduce that the Kumishi and the south to the Dikar metasedimentary rocks were formed proximal to the arc side of the back-arc basin, but the Weiya metasedimentary rocks were closer to the continental side of the back-arc basin. |
| WOS关键词 | RARE-EARTH ELEMENTS ; CRUSTAL EVOLUTION ; SM-ND ; CONTINENTAL-CRUST ; NORTH-AMERICA ; SEDIMENTARY ; BASIN ; FRACTIONATION ; TURBIDITES ; MINNESOTA |
| WOS研究方向 | Materials Science ; Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000188789200005 |
| 出版者 | TAYLOR & FRANCIS LTD |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/78239]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Liu, SW |
| 作者单位 | 1.Peking Univ, Sch Earth & Space Sci, Minist Educ, Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, QG,Liu, SW,Han, BF,et al. Nd isotopic characteristics of Proterozoic metasedimentary rocks and constraints on their provenance in the eastern segment of Central Tianshan Belt, Xinjiang[J]. PROGRESS IN NATURAL SCIENCE,2003,13(12):908-913. |
| APA | Li, QG,Liu, SW,Han, BF,Zhang, J,&Chu, ZY.(2003).Nd isotopic characteristics of Proterozoic metasedimentary rocks and constraints on their provenance in the eastern segment of Central Tianshan Belt, Xinjiang.PROGRESS IN NATURAL SCIENCE,13(12),908-913. |
| MLA | Li, QG,et al."Nd isotopic characteristics of Proterozoic metasedimentary rocks and constraints on their provenance in the eastern segment of Central Tianshan Belt, Xinjiang".PROGRESS IN NATURAL SCIENCE 13.12(2003):908-913. |
入库方式： OAI收割
来源：地质与地球物理研究所
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