Knowledge Management System Of Guangzhou Institute of Geochemistry,CAS
Liu, Xiao1,2; Wang, Qiang1,2,3; Ma, Lin1; Wyman, Derek A.4; Zhao, Zhen-Hua5; Yang, Jin-Hui6; Zi, Feng7; Tang, Gong-Jian1,3; Dan, Wei1,3; Zhou, Jin-Sheng1 | |
Petrogenesis of Late Jurassic Pb-Zn mineralized high delta O-18 granodiorites in the western Nanling Range, South China | |
刊名 | JOURNAL OF ASIAN EARTH SCIENCES
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ISSN号 | 1367-9120 |
2020-05-01 | |
卷号 | 192页码:17 |
DOI | 10.1016/j.jseaes.2020.104236 |
语种 | 英语 |
WOS研究方向 | Geology |
摘要 | Amphibole-bearing granites are commonly considered to be I-type granites, derived by partial melting of igneous rocks. However, the contribution of sedimentary rocks to the source of such rocks is difficult to identify and remains debated. Here, we present a study of amphibole-bearing Pb-Zn mineralized granodiorites in the western Nanling Range of South China. LA-ICP-MS zircon U-Pb ages show that these granodiorites were generated during the Late Jurassic (ca. 161 Ma). They have variable SiO2 contents of 61.8-70.7 wt% and have high-K or shoshonitic characteristics, with varied Mg-# (0.28-0.54). These granodiorites are enriched in Th and U, and depleted in Nb, Ta and Ti. They display enriched light rare earth element (LREE) and flat heavy rare earth element (HREE) patterns, with slightly negative to negligible Eu anomalies (delta Eu = 0.74-0.95). Given their high zircon delta O-18 values (8.8 parts per thousand-11.9 parts per thousand), as well as negative epsilon(Nd)(t) (-7.5 to -5.1) and zircon epsilon(Hf)(t) (-13.9 to -7.5) values, we suggest that these Pb-Zn mineralized granodiorites in the western Nanling Range were derived mainly by partial melting of Middle Neoproterozoic mafic volcaniclastic rocks from the Nanhua rift basin, South China, in the lower crust. This study provides an important insight into the genesis of amphibole-bearing granites. We suggest that the partial melting of crustal metasedimentary and metaigneous rocks is an important mechanism for the Mesozoic crustal reworking of South China, and granodiorites generated by such a mechanism should also favor Pb-Zn mineralization. |
关键词 | Amphibole-bearing granite Partial melting of metasedimentary and metaigneous rocks Western Nanling Range South China |
WOS记录号 | WOS:000521111600026 |
收录类别 | SCI |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.gig.ac.cn/handle/344008/59036 |
通讯作者 | Wang, Qiang; Ma, Lin |
作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 4.Univ Sydney, Sch Geosci, Sydney, NSW 2006, Australia 5.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China 6.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 7.Hunan Univ Sci & Technol, Sch Resource & Environm & Safety Engn, Xiangtan 411201, Peoples R China |
推荐引用方式 GB/T 7714 | Liu, Xiao,Wang, Qiang,Ma, Lin,et al. Petrogenesis of Late Jurassic Pb-Zn mineralized high delta O-18 granodiorites in the western Nanling Range, South China[J]. JOURNAL OF ASIAN EARTH SCIENCES,2020,192:17. |
APA | Liu, Xiao.,Wang, Qiang.,Ma, Lin.,Wyman, Derek A..,Zhao, Zhen-Hua.,...&Zhou, Jin-Sheng.(2020).Petrogenesis of Late Jurassic Pb-Zn mineralized high delta O-18 granodiorites in the western Nanling Range, South China.JOURNAL OF ASIAN EARTH SCIENCES,192,17. |
MLA | Liu, Xiao,et al."Petrogenesis of Late Jurassic Pb-Zn mineralized high delta O-18 granodiorites in the western Nanling Range, South China".JOURNAL OF ASIAN EARTH SCIENCES 192(2020):17. |
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