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Genesis and mineralization potential of the Late Cretaceous Chemen granodioritic intrusion in the southern Gangdese magmatic belt, Tibet

文献类型：期刊论文

作者Zhang, Lipeng1,2; Hu, Yongbin3; Deng, Jianghong1,2; Wang, Jinrong4; Wang, Kun1; Sui, Qinglin1; Chen, Yuxiao5; Wu, Kai6; Sun, Weidong1,2,7
刊名JOURNAL OF ASIAN EARTH SCIENCES
出版日期2021-09-01
卷号217页码:16
关键词Gangdese Late Cretaceous Adakite Ridge subduction Mineralization potential
ISSN号1367-9120
DOI10.1016/j.jseaes.2021.104829
通讯作者Hu, Yongbin(huyongbin85@foxmail.com) ; Deng, Jianghong(jhdeng0507@163.com)
英文摘要y Large-scale Late Cretaceous magmatic intrusions have been recognized in the southern Gangdese magmatic belt, although their genesis and mineralization potential remain controversial. In this paper, we present new zircon UPb ages, whole-rock compositions, and major- and trace element compositions of zircon and apatite from the Chemen granodioritic intrusion. When integrated with compiled literature data for other Late Cretaceous igneous rocks in the southern Gangdese belt, our new dataset provides new insight into their genesis and mineralization potential. The Chemen intrusion obtains a zircon U-Pb age of similar to 91 Ma, similar to the age of Late Cretaceous magmatic intrusions across the entire southern Gangdese belt. Both the Chemen and other Late Cretaceous intrusions have geochemical characteristics that resemble those of adakites. When considered alongside the coeval formation of mafic intrusive rocks, high-temperature adakitic charnockites, and thickening of continental crust in the region, ridge subduction is considered most likely to be responsible for this 'flare-up' event. The Ce4+/Ce3+ ratios in zircon and SO3 contents of apatite from the Chemen granodiorites both indicate a high oxygen fugacity during crystallization. Further, trace elements in Chemen apatite indicate that the Chemen intrusion has a great mineralization potential; however, no mineralization has been found in some of the Late Cretaceous intrusions in the southern Gangdese belt. Compiled data show that these barren Late Cretaceous intrusions generally formed from magmas with a low oxygen fugacity. Thus, we speculate that the low oxygen fugacity of some Late Cretaceous intrusions may limit the extent to which mineralization may occur.
资助项目National Natural Science Foundation of China[41803032] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB42020203] ; National Key R&D Program of China[2016YFC0600408]
WOS研究方向Geology
语种英语
WOS记录号WOS:000671118200002
出版者PERGAMON-ELSEVIER SCIENCE LTD
源URL[http://ir.qdio.ac.cn/handle/337002/176999]  
专题海洋研究所_深海极端环境与生命过程研究中心
通讯作者Hu, Yongbin; Deng, Jianghong
作者单位1.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Ctr Ocean Megasci, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266237, Peoples R China
3.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China
4.China Met Geol Bur, Inst Geol 2, Fuzhou 350108, Peoples R China
5.Guangzhou Univ, Sch Environm Sci & Engn, Minist Educ, Key Lab Water Qual & Conservat Pearl River Delta, Guangzhou 510006, Peoples R China
6.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Xian 710069, Peoples R China
7.Univ Chinese Acad Sci, Being 100049, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Lipeng,Hu, Yongbin,Deng, Jianghong,et al. Genesis and mineralization potential of the Late Cretaceous Chemen granodioritic intrusion in the southern Gangdese magmatic belt, Tibet[J]. JOURNAL OF ASIAN EARTH SCIENCES,2021,217:16.
APA Zhang, Lipeng.,Hu, Yongbin.,Deng, Jianghong.,Wang, Jinrong.,Wang, Kun.,...&Sun, Weidong.(2021).Genesis and mineralization potential of the Late Cretaceous Chemen granodioritic intrusion in the southern Gangdese magmatic belt, Tibet.JOURNAL OF ASIAN EARTH SCIENCES,217,16.
MLA Zhang, Lipeng,et al."Genesis and mineralization potential of the Late Cretaceous Chemen granodioritic intrusion in the southern Gangdese magmatic belt, Tibet".JOURNAL OF ASIAN EARTH SCIENCES 217(2021):16.

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来源：海洋研究所

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