Geochemistry, U-Pb dating, Lu-Hf isotopic analysis and geological significance of volcanic rocks in Maikain deposit, Kazakhstan
文献类型：期刊论文
| 作者 | Pan HongDi1; Shen Ping2; Zhang LinHao3; Seitmuratova, Eleonora4; Jakupova, Sholpan4 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2015-02-01 |
| 卷号 | 31期号:2页码:401-414 |
| 关键词 | Geochemistry Zircon Sims U-pb Dating Lu-hf Isotopic Composition Vms Deposit Maikain Kazakhstan |
| 文献子类 | Article |
| 英文摘要 | The Maikain large-size VMS Au-Ag-Cu-Zn-Pb deposit is located in the Baidaulet-Akbastau area in Central Kazakhstan. On the basis of detailed field profiling and thin-section petrography, we identified the main rock types in the Maikain area which are basic-intermediate volcanic and subvolcanic rocks. The mineralization is associated with intermediate volcanic rock. Based on our new geochemistry, two types are recognized: (1) Type I is tholeiitic to calc-alkaline basalts, andesites and gabbro-diabase and diabase, with REE patterns that are flat, and with a negative Nb anomaly and Th/Yb enrichment, indicating that they were generated above a subduction zone; (2) Type II is calc-alkaline andesite, which is strongly enriched in LREE with a negative Nb anomaly and Th/Yb enrichment, suggesting generation in a normal island-arc setting. Type II andesite is the host rock. The zircon Lu-Hf isotopic composition show that the zircon epsilon(Hf) (t) of Type II lava range from +4. 28 to +14. 84, suggesting that these melts were derived from mantle wedge above a subduction zone. The SIMS zircon U-Pb dating of Type II lava yields Late Ordovician age (459. 1 +/- 4. 8Ma). Therefore, the host rocks of the Maikain large-size VMS deposit are calc-alkaline andesites which formed in a normal island-arc setting in Late Ordovician. We propose that the Sharburti Mountains are the eastern extension of the Boshchekul-Chingiz porphyry-VMS ore belt of Kazakhstan into China. The Sharburti Mountains in the northern West Junggar have the magma condition and tectonic setting for VMS deposit. |
| WOS关键词 | CENTRAL-ASIA ; CONTINENTAL-CRUST ; DISCRIMINATION ; DIAGRAM ; CHINA ; CLASSIFICATION ; CONTAMINATION ; CHONDRITES ; SUBDUCTION ; EVOLUTION |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000350616100008 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/62554]  |
| 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.Changan Univ, Coll Earth Sci & Resources, Xian 710054, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 3.China Natl Gold Grp Asset Management Corp, Beijing 100011, Peoples R China 4.K Satpaev Inst Geol Sci, Lab Geol Format, Alma Ata 050010, Kazakhstan |
| 推荐引用方式 GB/T 7714 | Pan HongDi,Shen Ping,Zhang LinHao,et al. Geochemistry, U-Pb dating, Lu-Hf isotopic analysis and geological significance of volcanic rocks in Maikain deposit, Kazakhstan[J]. ACTA PETROLOGICA SINICA,2015,31(2):401-414. |
| APA | Pan HongDi,Shen Ping,Zhang LinHao,Seitmuratova, Eleonora,&Jakupova, Sholpan.(2015).Geochemistry, U-Pb dating, Lu-Hf isotopic analysis and geological significance of volcanic rocks in Maikain deposit, Kazakhstan.ACTA PETROLOGICA SINICA,31(2),401-414. |
| MLA | Pan HongDi,et al."Geochemistry, U-Pb dating, Lu-Hf isotopic analysis and geological significance of volcanic rocks in Maikain deposit, Kazakhstan".ACTA PETROLOGICA SINICA 31.2(2015):401-414. |
入库方式： OAI收割
来源：地质与地球物理研究所
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