Mesozoic felsic dikes in the Jiaobei Terrane, southeastern North China Craton: Constraints from zircon geochronology and geochemistry, and implications for gold metallogeny
文献类型：期刊论文
| 作者 | Li, Xing-Hui1,2,3; Fan, Hong-Rui1,2,4; Santosh, M.5,6; Yang, Kui-Feng1,2,4; Peng, Hong-Wei1,2; Hollings, Pete3; Hu, Fang-Fang1,2,4 |
| 刊名 | JOURNAL OF GEOCHEMICAL EXPLORATION
 |
| 出版日期 | 2019-06-01 |
| 卷号 | 201页码:40-55 |
| ISSN号 | 0375-6742 |
| 关键词 | Zircon U-Pb geochronology Trace elements Hf isotopes Felsic dikes Lithospheric thinning Gold metallogeny |
| DOI | 10.1016/j.gexplo.2019.03.012 |
| 英文摘要 | The Jiaobei Terrane in the southeastern North China Craton (NCC) witnessed intense magmatic pulses during Mesozoic in response to lithospheric thinning. These include sporadic felsic-porphyritic dikes which preserve important information on the magmatic processes and of its implications on lithospheric thinning. Here we present a detailed investigation of representative felsic-porphyritic dikes based on whole-rock geochemical analysis, zircon LA-ICPMS U-Pb geochronology, trace elements and hafnium isotopic compositions. Our results identify stages of felsic dikes in the Jiaobei Terrane with ages in the range of 131-127 Ma and 123-116 Ma. The early stage felsic dikes (ESFDs) have negative zircon epsilon(Hf)(t) ( - 22.4 to - 11.1), high zircon Eu-N/Eu-N* (0.41-0.92) and Ce4+/Ce (3+) (62-944), low Ti-in-zircon crystallization temperatures (524-738 degrees C), and are geochemically comparable to the coexisting Guojialing granodiorite. Abundant inherited zircons and scattered zircon Hf, Yb/Gd, Th/U, and Ce/Sm values suggest that the magmas from which the dikes formed involved crustal contamination. They are interpreted to be the hypabyssal phase of the Guojialing suite sourced from the Paleoproterozoic lower crust of the eastern NCC with input of mantle components, associated with extensive crust-mantle interaction during the peak lithospheric thinning. The late stage felsic dikes (LSFDs) are characterized by variable zircon epsilon(Hf)(t), Eu-N/Eu-N* and Ce4+/Ce3+ values ( -20.1 to -12.2, 0.38-0.88 and 64-956 for the granodiorite- and quartz-porphyritic dikes; -27.6 to -16.2, 0.17-0.75 and 22-503 for the monzo-granite-porphyritic dikes), low Ti-in-zircon crystallization temperatures (562 to 774 degrees C), and display geochemical similarity with the Aishan granitoids. Systematic variations of zircon Hf, Yb/Gd, Th/U and Ce/Sm suggest that fractional crystallization of hornblende played a significant role in the formation of the late dikes. The LSFDs originated from the Neoarchean-Paleoproterozoic lower crust of the NCC with heterogeneous involvement of lesser amounts of mantle materials than the early dikes, consistent with weak crust-mantle interaction during the waning stage of lithospheric thinning. In the LSFDs, the granodiorite and monzogranite porphyries are broadly coeval (123-118 Ma) with large scale gold mineralization in the area as also favored by the high zircon Ce4+/Ce3+ ratios. Our study also provides new insights into the formation of gold deposits. |
| WOS关键词 | U-PB AGE ; TRACE-ELEMENT COMPOSITION ; SULU UHP BELT ; SHANDONG PROVINCE ; EASTERN CHINA ; JIAODONG TERRANE ; LOWER CRUST ; POSTCOLLISIONAL MAGMATISM ; ISOTOPIC COMPOSITIONS ; SOUTH CHINA |
| 资助项目 | National Natural Science Foundation of China[41672094] ; National Key Research and Development Program[2016YFC0600105] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000463824400004 |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/91289]  |
| 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 | Fan, Hong-Rui |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 3.Lakehead Univ, Geol Dept, 955 Oliver Rd, Thunder Bay, ON P7B 5E1, Canada 4.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 5.China Univ Geosci Beijing, Sch Earth Sci & Resources, 29 Xueyuan Rd, Beijing 100083, Peoples R China 6.Univ Adelaide, Dept Earth Sci, Adelaide, SA 5005, Australia |
| 推荐引用方式 GB/T 7714 | Li, Xing-Hui,Fan, Hong-Rui,Santosh, M.,et al. Mesozoic felsic dikes in the Jiaobei Terrane, southeastern North China Craton: Constraints from zircon geochronology and geochemistry, and implications for gold metallogeny[J]. JOURNAL OF GEOCHEMICAL EXPLORATION,2019,201:40-55. |
| APA | Li, Xing-Hui.,Fan, Hong-Rui.,Santosh, M..,Yang, Kui-Feng.,Peng, Hong-Wei.,...&Hu, Fang-Fang.(2019).Mesozoic felsic dikes in the Jiaobei Terrane, southeastern North China Craton: Constraints from zircon geochronology and geochemistry, and implications for gold metallogeny.JOURNAL OF GEOCHEMICAL EXPLORATION,201,40-55. |
| MLA | Li, Xing-Hui,et al."Mesozoic felsic dikes in the Jiaobei Terrane, southeastern North China Craton: Constraints from zircon geochronology and geochemistry, and implications for gold metallogeny".JOURNAL OF GEOCHEMICAL EXPLORATION 201(2019):40-55. |
入库方式： OAI收割
来源：地质与地球物理研究所
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