Caledonian granitoids in the Jinxiu area, Guangxi, South China: Implications for their tectonic setting
文献类型：期刊论文
| 作者 | Li, Xiaofeng1,2; Yu, Yong3; Wang, Chunzeng4 |
| 刊名 | LITHOS
 |
| 出版日期 | 2017-02-01 |
| 卷号 | 272页码:249-260 |
| 关键词 | Geochemistry Geochronology Caledonian Tectonic Setting Jinxiu South China |
| ISSN号 | 0024-4937 |
| DOI | 10.1016/j.lithos.2016.12.016 |
| 文献子类 | Article |
| 英文摘要 | Jinxiu area is tectonically located between the Cathaysia and Yangtze blocks of South China. The area has three granitic plutons, Dajin, Boquan, and Lingzu plutons. Geochemically the plutons are high-K calc-alkaline, depleted in Ba, Sr, P, and Ti and rich in Pb, with decoupled Nb and Ta, and show non-island-arc magmatic affinity. Biotite monzogranite samples collected from the Dajin, Boquan, and Lingzu plutons yield zircon SHRIMP (206)pb,/U-238 ages of 419.0 +/- 5.0 Ma, 436.0 +/- 4.0 Ma, and 446.1 +/- 82 Ma, respectively, indicating that the plutons were emplaced during the Late Ordovician to Late Silurian of the Caledonian time. The granodiorite within the Lingzu biotite monzogranite pluton yields a zircon (206)pb/U-238 age of 174.5 +/- 1.9 Ma, indicating a superimposed Late Jurassic magmatic event. The monzogranites and their enclaves show epsilon(Nd(t)) values of -14.7 to -11.1 and -8.0 respectively and T-DM2 values of 2.1-2.4 Ga and 1.8 Ga, respectively, demonstrating that the magmas were derived from re-melted Paleoproterozoic continental crust. Based on geochronology and geochemistry of the granitic plutons, as well as regional stratigraphy and paleontology, it is concluded that any existence of oceanic crust and oceanic subduction was unlikely in the Jinxiu area and vicinity during the Paleozoic Caledonian Ordovician-Silurian time. (C) 2016 Elsevier B.V. All rights reserved. |
| WOS关键词 | EVOLUTION ; ND ; GEOCHRONOLOGY ; SUBDUCTION ; DEPOSITS ; ROCKS ; BELT |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy |
| 语种 | 英语 |
| WOS记录号 | WOS:000393265600017 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National Natural Science Foundation of China(41472080) ; National Natural Science Foundation of China(41472080) ; National Natural Science Foundation of China(41472080) ; National Natural Science Foundation of China(41472080) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/53109]  |
| 专题 | 地质与地球物理研究所_中国科学院矿产资源研究重点实验室 |
| 通讯作者 | Li, Xiaofeng |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Being 100029, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China 3.Guilin Univ Technol, Coll Earth Sci, Guilin 541004, Peoples R China 4.Univ Maine Presque Isle, Presque Isle, ME 04769 USA |
| 推荐引用方式 GB/T 7714 | Li, Xiaofeng,Yu, Yong,Wang, Chunzeng. Caledonian granitoids in the Jinxiu area, Guangxi, South China: Implications for their tectonic setting[J]. LITHOS,2017,272:249-260. |
| APA | Li, Xiaofeng,Yu, Yong,&Wang, Chunzeng.(2017).Caledonian granitoids in the Jinxiu area, Guangxi, South China: Implications for their tectonic setting.LITHOS,272,249-260. |
| MLA | Li, Xiaofeng,et al."Caledonian granitoids in the Jinxiu area, Guangxi, South China: Implications for their tectonic setting".LITHOS 272(2017):249-260. |
入库方式： OAI收割
来源：地质与地球物理研究所
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