Chronology and tectonic setting of the intrusive bodies and associated porphyry copper deposit in Hersai area, eastern Junggar
文献类型：期刊论文
| 作者 | Du ShiJun1,2; Qu Xun3; Deng Gang3; Zhang Yong1; Cheng SongLin3; Lu HongFei3; Wu Qi1; Xu XingWang1 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2010-10-01 |
| 卷号 | 26期号:10页码:2981-2996 |
| 关键词 | Zircon U-pb Dating Re-os Isochron Age Of Molybdenite Tectonic Setting Porphyry Copper Deposit Hersai Eastern Junggar |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | Hersai porphyry copper deposit located at the eastern segment of the Yemaquan-Qiongheba Paleozoic arc belt, eastern Junggar was a new discovered copper deposit recently. The ore-forming intrusive body was granodioritic porphyry intruded in a granodiorite pluton containing irregular K-feldspar granitic bodies. Zircon U-Pb dating results show that the K-feldspar granite was older with weight average age of about 429Ma and contained some zircons with average age of about 405Ma, ages of the granodiorite and granodioritic porphyry were about 411 Ma and 410. 5Ma respectively, and the granodiorite had some elastic zircon with weight average age of about 432Ma. This indicates that there had experienced three-stages magmatic and hydrothermal actives from Early Silurian in the Hersai area, and the Qiongheba arc was created in the Early Paleozoic era. Re-Os isochron age of molybdenites was about 409Ma, which was consistent to that of the granodioritic porphyry in the Hersai area. This suggests that the porphyry copper deposit in the Hersai area was produced in the Early Devonian with an age of about 410Ma. Both the granodiorite and granodioritic porphyry in the Hersai area had typical geochemical feature of arc-type and adakitic intrusions, including 63. 79% similar to 68. 86% SiO(2), 14. 91% similar to 17.48% Al(2)O(3), 0.68% similar to 2. 35% MgO, high Sr (383 x 10(-6) similar to 971 x 10(-6)) and Sr/Y ratio (48.3 similar to 111), low Y (7.92 x 10(-6) similar to 9.69 x 10(-6)) and Yb (0.76 x 10(-6) similar to 0. 98 x 10(-6)), enriched in large-ion lithophile element (e. g. Ba, K, Pb and Sr) and depleted in HSF elements (e. g. Th, Nb, Ti), low ((87)Sr/(86)Sr), ratio (0. 703852 similar to 0. 704565), normal epsilon(Nd) (t) value (+6. 1 similar to + 7. 4), and low ((206)Pb/(204)Pb), ratio (17. 58 similar to 17. 91), ((207)Pb/(204)Pb); ratio (15. 40 similar to 15. 48) and ((208)Pb/(204)Pb) ratio (37. 25 similar to 37. 47). These geochemical characteristics indicate that they were most possibly formed in arc setting and related to partial melting of subducted oceanic crust. The magmatic zone represented by granodiorite and granodioritic porphyry in the Qiongheba area is a potential area for formation and prospecting of porphyritic Cu deposit. |
| WOS关键词 | TRACE-ELEMENT ; XINJIANG ; ARC |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000284450800010 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/73160]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Du ShiJun |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Geol Environm Monitoring Gen Stn Hainan, Haikou 571100, Peoples R China 3.Xinjiang Bur Geol & Mineral Resources, Urumqi 830000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Du ShiJun,Qu Xun,Deng Gang,et al. Chronology and tectonic setting of the intrusive bodies and associated porphyry copper deposit in Hersai area, eastern Junggar[J]. ACTA PETROLOGICA SINICA,2010,26(10):2981-2996. |
| APA | Du ShiJun.,Qu Xun.,Deng Gang.,Zhang Yong.,Cheng SongLin.,...&Xu XingWang.(2010).Chronology and tectonic setting of the intrusive bodies and associated porphyry copper deposit in Hersai area, eastern Junggar.ACTA PETROLOGICA SINICA,26(10),2981-2996. |
| MLA | Du ShiJun,et al."Chronology and tectonic setting of the intrusive bodies and associated porphyry copper deposit in Hersai area, eastern Junggar".ACTA PETROLOGICA SINICA 26.10(2010):2981-2996. |
入库方式： OAI收割
来源：地质与地球物理研究所
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