Petrogenesis of Late Jurassic Pb-Zn mineralized high delta O-18 granodiorites in the western Nanling Range, South China

doi:10.1016/j.jseaes.2020.104236

GIG OpenIR

	Liu, Xiao 1,2; Wang, Qiang 1,2,3; Ma, Lin 1; Wyman, Derek A.4; Zhao, Zhen-Hua 5; Yang, Jin-Hui 6; Zi, Feng 7; Tang, Gong-Jian 1,3; Dan, Wei 1,3; Zhou, Jin-Sheng 1
	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
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.