Geochronology and geochemistry of Mesozoic dykes in the Qingchengzi ore field, Liaoning Province, China: Magmatic evolution and implications for ore genesis
文献类型：期刊论文
| 作者 | Sun, Guotao1,2,3; Zeng, Qingdong1,2,3; Wang, Yongbin1,2; Li, Bin4; Chen, Peiwen1,2,3 |
| 刊名 | GEOLOGICAL JOURNAL
 |
| 出版日期 | 2019-09-12 |
| 页码 | 19 |
| ISSN号 | 0072-1050 |
| 关键词 | Hf isotopes Liaodong Peninsula mantle evolution Mesozoic intrusive rocks polymetallic mineralization zircon U-Pb ages |
| DOI | 10.1002/gj.3646 |
| 英文摘要 | The Qingchengzi Pb-Zn-Au-Ag-Mo polymetallic ore field located in the Liaodong Peninsula, Liaoning Province, China, is spatially associated with multiple magmatism, which provide a classic example for studying the multiple tectonic and metallogenetic events. In this paper, we report some new geochemical and geochronological data of igneous rocks in the Qingchengzi ore field, including diabase, lamprophyre, microdiorite, granite porphyry, and quartz porphyry. Zircon U-Pb dating yielded the formation ages of these rocks as Triassic, Jurassic, and Early Cretaceous. Low-Mg adakitic granite porphyries formed at 233 Ma have zircon epsilon(Hf)(t) values of -17.7 to -14.5, suggesting that they were mainly derived from partial melting of thickened lower crust. Mafic dykes formed during 226-203 Ma have zircon epsilon(Hf)(t) values of -28.6 to -12.8, suggesting that they were mainly derived from partial melting of ancient lithospheric mantle. Zircons from the 168Ma Jurassic diabase have high Nb/Ta and low Nb/Th ratios, with zircon epsilon(Hf)(t) values of -25.2 to -18.5. This suggests that ancient lithospheric mantle was influenced by melts/fluids from the subducted Palaeo-Pacific Plate. The Early Cretaceous microdiorites (126 Ma) are high-Mg adakite rocks, with zircon epsilon(Hf)(t) values of -27.3 to -19.6. Melting of delaminated eclogitic lower crust might produce these high-Mg adakitic microdiorites. The upwelling asthenosphere could heat the residual lower crust to form the quartz porphyries. The Early Cretaceous diabase (100 Ma) shows low Nb/Ta and high Nb/Th ratios, with zircon epsilon(Hf)(t) values of -0.7 to 5.8, implying a depleted mantle source. The characteristics of Triassic-Cretaceous intermediate-mafic intrusions show that the lithospheric mantle evolved from enriched ancient mantle to depleted juvenile mantle. This transformation of the lithospheric mantle might have resulted from the delamination of the lower crust that was caused by subduction of the Palaeo-Pacific Plate. Based on the field observation and geochemical data, Au, Pb-Zn-Ag, Mo mineralization in the Qingchengzi ore field show closely spatial and genetic relationship with intrusive rocks, indicating that the Mo, Pb-Zn-Ag mineralization might be related to the Jurassic magmatic activity, whereas Au mineralization related to the Early Cretaceous magma. |
| WOS关键词 | ZIRCON U-PB ; HF ISOTOPIC COMPOSITIONS ; LIAODONG PENINSULA ; CRATONIC LITHOSPHERE ; CRUSTAL EVOLUTION ; CONTINENTAL-CRUST ; INTRUSIVE ROCKS ; TRACE-ELEMENTS ; OCEANIC-CRUST ; GOLD PROVINCE |
| 资助项目 | Cultivation Project for National Excellent Youth of Yunnan University[2018YDJQ009] ; Research Startup Project for Introduced Talent of Yunnan University[YJRC4201804] ; State Key Laboratory of Lithospheric Evolution[S201605] ; National Key R&D Program of China[2016YFC0600101] ; National Key R&D Program of China[2016YFC0600108] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | WILEY |
| WOS记录号 | WOS:000486192200001 |
| 资助机构 | Cultivation Project for National Excellent Youth of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Cultivation Project for National Excellent Youth of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Cultivation Project for National Excellent Youth of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Cultivation Project for National Excellent Youth of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/93702]  |
| 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 | Zeng, Qingdong |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beituchengxilu 19, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Liaoning Qingchengzi Lead Min Corp, Dandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Guotao,Zeng, Qingdong,Wang, Yongbin,et al. Geochronology and geochemistry of Mesozoic dykes in the Qingchengzi ore field, Liaoning Province, China: Magmatic evolution and implications for ore genesis[J]. GEOLOGICAL JOURNAL,2019:19. |
| APA | Sun, Guotao,Zeng, Qingdong,Wang, Yongbin,Li, Bin,&Chen, Peiwen.(2019).Geochronology and geochemistry of Mesozoic dykes in the Qingchengzi ore field, Liaoning Province, China: Magmatic evolution and implications for ore genesis.GEOLOGICAL JOURNAL,19. |
| MLA | Sun, Guotao,et al."Geochronology and geochemistry of Mesozoic dykes in the Qingchengzi ore field, Liaoning Province, China: Magmatic evolution and implications for ore genesis".GEOLOGICAL JOURNAL (2019):19. |
入库方式： OAI收割
来源：地质与地球物理研究所
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