Petrological and geochemical features of the early Paleozoic granitic gneisses and iron ores in the Tianhu iron deposit, Eastern Tianshan, NW China: Implications for ore genesis
文献类型：期刊论文
| 作者 | Zheng, Jiahao1,2,3; Mao, Jingwen1; Yang, Fuquan1; Chai, Fengmei4; Shen, Ping3 |
| 刊名 | LITHOS
 |
| 出版日期 | 2017-08-01 |
| 卷号 | 286页码:426-439 |
| 关键词 | Tianhu iron deposit Granitic gneisses Eastem Tianshan Early Paleozoic Ore genesis |
| ISSN号 | 0024-4937 |
| DOI | 10.1016/j.lithos.2017.06.021 |
| 文献子类 | Article |
| 英文摘要 | This paper reports whole-rock geochemical, zircon U-Pb and Hf isotopic data for ore-hosted granitic gneisses, mineral compositions of oxides, and sulfur isotopic data for sulfides in iron ores from the Tianhu deposit, central part of the Eastern Tianshan. Our results can provide crucial constraints on the genesis of granitic gneisses and early Paleozoic tectonic setting of the Eastern Tianshan. LA-ICP-MS U-Pb dating on magmatic zircons yielded weighted mean Pb-206/U-238 ages of 463 to 438 Ma, interpreted as the crystallization ages of the granitic protoliths and the formation ages of the Tianhu Group. Zircon U-Pb age of ore-hosted granitic gneiss (ca. 459 Ma) can provide reliable constrains on upper limit for iron mineralization age in the Tianhu deposit. Geochemical characteristics suggest that the protoliths of the Tianhu granitic gneisses are metaluminous to weakly peraluminous high-K calc-alkaline granitic rocks, exhibiting typical subduction-related features such as strong enrichment in LREE and LILE and depletion in HFSE. Zircon Hf isotopic compositions show a positive trend from similar to 463 to similar to 438 Ma, indicating that similar to 460 Ma magmas came from both ancient and juvenile sources, whereas similar to 438 Ma magmas involved more juvenile material. Some early Paleozoic granitoids were recently identified in the Eastern Tianshan with the ages between ca. 475 and ca. 425 Ma. The formation of these early Paleozoic granitoids was in response to subduction processes, suggesting that subduction of Junggar Ocean probably began in the Early Ordovician and lasted until Late Silurian. |
| WOS关键词 | ZIRCON U-PB ; MAFIC-ULTRAMAFIC INTRUSIONS ; HF ISOTOPIC COMPOSITIONS ; ASIAN OROGENIC BELT ; A-TYPE GRANITOIDS ; NORTHWEST CHINA ; CU DEPOSIT ; CONTINENTAL GROWTH ; HOST PORPHYRIES ; LASER-ABLATION |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy |
| 语种 | 英语 |
| WOS记录号 | WOS:000408286700028 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | NSFC(U1403391 ; China Postdoctoral Science Foundation(2016LH0003 ; Ministry of Land and Resources Public Welfare Industry Special Funds for Scientific Research Project(201211073) ; 41390442) ; 2017M610984) ; NSFC(U1403391 ; China Postdoctoral Science Foundation(2016LH0003 ; Ministry of Land and Resources Public Welfare Industry Special Funds for Scientific Research Project(201211073) ; 41390442) ; 2017M610984) ; NSFC(U1403391 ; China Postdoctoral Science Foundation(2016LH0003 ; Ministry of Land and Resources Public Welfare Industry Special Funds for Scientific Research Project(201211073) ; 41390442) ; 2017M610984) ; NSFC(U1403391 ; China Postdoctoral Science Foundation(2016LH0003 ; Ministry of Land and Resources Public Welfare Industry Special Funds for Scientific Research Project(201211073) ; 41390442) ; 2017M610984) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/61880]  |
| 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 | Zheng, Jiahao |
| 作者单位 | 1.Chinese Acad Geol Sci, Inst Mineral Resources, MLR Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China 2.Peking Univ, Sch Earth & Space Sci, Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 4.Xinjiang Univ, Xinjiang Key Lab Geodynam Proc & Metallogen Progn, Coll Geol & Min Engn, Urumqi 830049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Jiahao,Mao, Jingwen,Yang, Fuquan,et al. Petrological and geochemical features of the early Paleozoic granitic gneisses and iron ores in the Tianhu iron deposit, Eastern Tianshan, NW China: Implications for ore genesis[J]. LITHOS,2017,286:426-439. |
| APA | Zheng, Jiahao,Mao, Jingwen,Yang, Fuquan,Chai, Fengmei,&Shen, Ping.(2017).Petrological and geochemical features of the early Paleozoic granitic gneisses and iron ores in the Tianhu iron deposit, Eastern Tianshan, NW China: Implications for ore genesis.LITHOS,286,426-439. |
| MLA | Zheng, Jiahao,et al."Petrological and geochemical features of the early Paleozoic granitic gneisses and iron ores in the Tianhu iron deposit, Eastern Tianshan, NW China: Implications for ore genesis".LITHOS 286(2017):426-439. |
入库方式： OAI收割
来源：地质与地球物理研究所
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