Geochronology and geochemistry of the Late Cretaceous Xinpeng granitic check to, intrusion, South China: Implication for Sn-W mineralization

doi:10.1016/j.oregeorev.2019.103075

	Geochronology and geochemistry of the Late Cretaceous Xinpeng granitic check to, intrusion, South China: Implication for Sn-W mineralization
	Zhang, Lipeng 1,2; Zhang, Rongqing 3; Chen, Yuxiao 4; Sun, Saijun 1,2; Liang, Jinlong 5; Sun, Weidong1,2,6
	2019-10-01
发表期刊	ORE GEOLOGY REVIEWS
ISSN	0169-1368
卷号	113 页码:11
通讯作者	Zhang, Rongqing(rqzhang@nju.edu.cn) ; Chen, Yuxiao(chyxiao@gzhu.edu.cn)
摘要	Large-scale Late Cretaceous granitic intrusions are developed in the southernmost margin of South China block. They constitute an EW-trending magmatic rock and mineralization belt from Guangdong to Yunnan province. Some of these Late Cretaceous granitic intrusions are associated with Sn-W mineralization, but the mineralization potential of other intrusions in this belt remains unclear due to intensive weathering and thick sediment covers. The Xinpeng intrusion is the largest Late Cretaceous granitic intrusion in the Yangchun basin, situated in Guangdong province, which mainly comprises of medium- to coarse-grained biotite granite. Previous geological surveys showed that the Xinpeng intrusion has undergone extensive alteration. Stream sediments around the Xinpeng intrusion displayed Sn and W geochemical anomalies. In addition, greisen-type and quartz vein-type tin occurrences have been discovered in the Xinpeng intrusion, which preliminarily shows a certain mineralization potential of tin and tungsten. However, little information is known about the geochronological and geochemical characteristics of the Xinpeng intrusion, and this limits our further assessment of its Sn-W mineralization potential. Here we summarize the geochemical characteristics of Late Cretaceous ore-forming granites in South China and report the geochronological and geochemical characteristics of the Xinpeng granitic intrusion for the first time. LA-ICP-MS zircon U-Pb dating yielded a weighted mean Pb-206/U-238 age of 77.4 +/- 0.8 Ma for the Xinpeng granitic intrusion, linking it with the Late Cretaceous magma activity. The Xinpeng intrusion is high-K calc-alkaline and slightly peraluminous. Chondrite-normalized REE elements of the Xinpeng intrusion show seagull-like patterns with strong negative Eu anomaly. High Rb/Sr ratios and low Nb/Ta, Zr/Hf ratios indicate the Xinpeng granitic intrusion experienced highly magmatic differentiation, attributed to high volatile F contents that can dramatically reduce the viscosity and solidus of magma. The intrusion shows whole-rock initial Sr isotope of 0.717703-0.718420 and Nd isotope of - 5.6-5.7 and zircon I-If isotope of - 3.28-0.62, indicating crust-derived source with some input of mantle materials. Taking into account all the characteristics, the Xinpeng intrusion agrees well with the common geochemical characteristics of Late Cretaceous Sn-W-bearing granites in the Yangchun basin, indicating that the Xinpeng granitic intrusion has a great potential of Sn-W mineralization.
关键词	Xinpeng granitic intrusion Late Cretaceous Sn-W mineralization Oxygen fugacity Magmatic differentiation
DOI	10.1016/j.oregeorev.2019.103075
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[41803032] ; National Key R&D Program of China[2016YFC0600408] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB18020102]
WOS研究方向	Geology ; Mineralogy ; Mining & Mineral Processing
WOS类目	Geology ; Mineralogy ; Mining & Mineral Processing
WOS记录号	WOS:000491635200028
出版者	ELSEVIER
引用统计	被引频次：19[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/164938
专题	深海极端环境与生命过程研究中心
通讯作者	Zhang, Rongqing; Chen, Yuxiao
作者单位	1.Chinese Acad Sci, Ctr Deep Sea Res, Inst Oceanol, Qingdao 266071, Shandong, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266237, Shandong, Peoples R China 3.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210023, Jiangsu, Peoples R China 4.Guangzhou Univ, Sch Environm Sci & Engn, Minist Educ, Key Lab Water Qual & Conservat Pearl River Delta, Guangzhou 510006, Guangdong, Peoples R China 5.Chengdu Univ Technol, Dept Geochem, Chengdu 610059, Sichuan, Peoples R China 6.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Zhang, Lipeng,Zhang, Rongqing,Chen, Yuxiao,et al. Geochronology and geochemistry of the Late Cretaceous Xinpeng granitic check to, intrusion, South China: Implication for Sn-W mineralization[J]. ORE GEOLOGY REVIEWS,2019,113:11.
APA	Zhang, Lipeng,Zhang, Rongqing,Chen, Yuxiao,Sun, Saijun,Liang, Jinlong,&Sun, Weidong.(2019).Geochronology and geochemistry of the Late Cretaceous Xinpeng granitic check to, intrusion, South China: Implication for Sn-W mineralization.ORE GEOLOGY REVIEWS,113,11.
MLA	Zhang, Lipeng,et al."Geochronology and geochemistry of the Late Cretaceous Xinpeng granitic check to, intrusion, South China: Implication for Sn-W mineralization".ORE GEOLOGY REVIEWS 113(2019):11.

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