U-Pb zircon, geochemical and Sr-Nd-Hf-O isotopic constraints on age and origin of the ore-bearing intrusions from the Nurkazgan porphyry Cu-Au deposit in Kazakhstan
文献类型：期刊论文
| 作者 | Shen, Ping1; Pan, Hongdi2; Seitmuratova, Eleonora3; Jakupova, Sholpan3 |
| 刊名 | JOURNAL OF ASIAN EARTH SCIENCES
 |
| 出版日期 | 2016-02-01 |
| 卷号 | 116页码:232-248 |
| 关键词 | Zircon U-Pb age Sr-Nd isotopes Hf-O isotopes Nurkazgan porphyry Cu-Au deposit Kazakhstan Central Asian Orogenic Belt |
| DOI | 10.1016/j.jseaes.2015.11.018 |
| 文献子类 | Article |
| 英文摘要 | Nurkazgan, located in northeastern Kazakhstan, is a super-large porphyry Cu-Au deposit with 3.9 Mt metal copper and 229 tonnage gold. We report in situ zircon U-Pb age and Hf-O isotope data, whole rock geochemical and Sr-Nd isotopic data for the ore-bearing intrusions from the Nurkazgan deposit. The ore bearing intrusions include the granodiorite porphyry, quartz diorite porphyry, quartz diorite, and diorite. Secondary ion mass spectrometry (SIMS) zircon U-Pb dating indicates that the granodiorite porphyry and quartz diorite porphyry emplaced at 440 +/- 3 Ma and 437 +/- 3 Ma, respectively. All host rocks have low initial Sr-87/Sr-86 ratios (0.70338-0.70439), high whole-rock epsilon Nd(t) values (+5.9 to +6.3) and very high zircon sHf(t) values (+13.4 to +16.5), young whole-rock Nd and zircon Hf model ages, and consistent and slightly high zircon 0 values (+5.7 to +6.7), indicating that the ore-bearing magmas derived from the mantle without old continental crust involvement and without marked sediment contamination during magma emplacement. The granodiorite porphyry and quartz diorite porphyry are enriched in large ion lithophile elements (LILE) and light rare earth elements (LREE) and depleted in high-field strength elements (HFSE), Eu, Ba, Nb, Sr, P and Ti. The diorite and quartz diorite have also LILE and LREE enrichment and HFSE, Nb and Ti depletion, but have not negative Eu, Ba, Sr, and P anomalies. These features suggest that the parental magma of the granodiorite porphyry and quartz diorite porphyry originated from melting of a lithospheric mantle and experienced fractional crystallization, whereas the diorite and quartz diorite has a relatively deeper lithospheric mantle source region and has not experienced strong fractional crystallization. Based on these, together with the coeval ophiolites in the area, we propose that a subduction of the Balkhash-Junggar oceanic plate took place during the Early Silurian and the ore bearing intrusions and associated Nurkazgan porphyry Cu-Au deposit occurred in an intra-oceanic arc setting. (C) 2015 Elsevier Ltd. All rights reserved. |
| WOS关键词 | PHANEROZOIC CRUSTAL GROWTH ; ASIAN OROGENIC BELT ; LU-HF ; TRACE-ELEMENT ; SM-ND ; CONTINENTAL GROWTH ; DETRITAL ZIRCONS ; MAGMA SERIES ; MANTLE ; CHINA |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000369456000018 |
| 资助机构 | National Natural Science Foundation of China(U1303293 ; National Natural Science Foundation of China(U1303293 ; Chinese Academy of Sciences(KZCX-EW-LY02) ; Chinese Academy of Sciences(KZCX-EW-LY02) ; National 305 Project(2011BAB06B01) ; National 305 Project(2011BAB06B01) ; 41272109 ; 41272109 ; 41390442) ; 41390442) ; National Natural Science Foundation of China(U1303293 ; National Natural Science Foundation of China(U1303293 ; Chinese Academy of Sciences(KZCX-EW-LY02) ; Chinese Academy of Sciences(KZCX-EW-LY02) ; National 305 Project(2011BAB06B01) ; National 305 Project(2011BAB06B01) ; 41272109 ; 41272109 ; 41390442) ; 41390442) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/62084]  |
| 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 |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Changan Univ, Coll Earth Sci, Xian 710054, Peoples R China 3.Satpaev Inst Geol Sci, Alma Ata 050010, Kazakhstan |
| 推荐引用方式 GB/T 7714 | Shen, Ping,Pan, Hongdi,Seitmuratova, Eleonora,et al. U-Pb zircon, geochemical and Sr-Nd-Hf-O isotopic constraints on age and origin of the ore-bearing intrusions from the Nurkazgan porphyry Cu-Au deposit in Kazakhstan[J]. JOURNAL OF ASIAN EARTH SCIENCES,2016,116:232-248. |
| APA | Shen, Ping,Pan, Hongdi,Seitmuratova, Eleonora,&Jakupova, Sholpan.(2016).U-Pb zircon, geochemical and Sr-Nd-Hf-O isotopic constraints on age and origin of the ore-bearing intrusions from the Nurkazgan porphyry Cu-Au deposit in Kazakhstan.JOURNAL OF ASIAN EARTH SCIENCES,116,232-248. |
| MLA | Shen, Ping,et al."U-Pb zircon, geochemical and Sr-Nd-Hf-O isotopic constraints on age and origin of the ore-bearing intrusions from the Nurkazgan porphyry Cu-Au deposit in Kazakhstan".JOURNAL OF ASIAN EARTH SCIENCES 116(2016):232-248. |
入库方式： OAI收割
来源：地质与地球物理研究所
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