Eocene porphyry copper deposits in the eastern Tibetan Plateau, China: Uplift, denudation, and implications for mineral exploration

doi:10.1002/gj.3389

	Eocene porphyry copper deposits in the eastern Tibetan Plateau, China: Uplift, denudation, and implications for mineral exploration
	Zhou, Jie 1,3,4; Li, Sanzhong 1,3; Wang, Genhou 4; Santosh, M.1,3,4,5; Zhang, Li 6; Yu, Shengyao 1,3; Suo, Yanhui 1,2,3; Liu, Yiming 1,3; Li, Xiyao 1,3
刊名	GEOLOGICAL JOURNAL
	2019-03-01
卷号	54 期号:2 页码:991-1012
关键词	emplacement depth mineral thermobarometer porphyry copper deposits tectonic uplift Tibetan Plateau
ISSN号	0072-1050
DOI	10.1002/gj.3389
英文摘要	The subduction-collision processes associated with the Indo-Eurasian plates resulted in the formation of a major belt of porphyry copper deposits in the eastern Tibetan Plateau. Identifying the emplacement depths of the ore-hosting porphyry intrusions and quantifying their denudation degree, which in turn is a function of the uplift and structural history, are fundamental to formulate guidelines for ore prospecting. In this study, we investigate three important porphyry deposits located adjacent to the Diancangshan-Ailaoshan Suture. From SW to NE, these are the Bijiashan, Xiaolongtan, and Fenshuiling deposits. Our study focuses on the relationship among uplift, denudation, and mineral preservation through the application of mineral thermobarometry, integrated with published zircon U-Pb dates. Application of amphibole-plagioclase thermobarometry yields emplacement temperature-pressure (T-P) conditions of 833.99 degrees C and 284.18MPa for Bijiashan, 804.72 degrees C and 163.88MPa for Xiaolongtan, and 748.67 degrees C and 116.70MPa for Fenshuiling. Our data show a progressive decrease in the emplacement depth from southwest to northeast, with average depths of 9.80km in the Bijiashan deposit, 5.65km in the Xiaolongtan deposit, and 4.02km in the Fenshuiling deposit, providing important clues on the exhumation history since the Eocene in the eastern Tibetan Plateau. Higher degree of denudation and faster uplift are noticed close to the Diancangshan-Ailaoshan Suture, with all the deposits belonging to the shallow denudation category and large prospecting potential. We integrate these results with geochronological data, alteration characteristics, and exhumation parameters to trace the tectonic history and to provide guidelines for exploration.
资助项目	Key Laboratory of Marine Sedimentology & Environmental Geology, SOA[MASEG201702]
WOS关键词	SHAN-RED RIVER ; WESTERN YUNNAN ; CRETACEOUS ROCKS ; SHEAR ZONE ; TECTONIC EVOLUTION ; EMPLACEMENT DEPTHS ; CLOCKWISE ROTATION ; FLUID INCLUSIONS ; LHASA TERRANE ; SOUTH
WOS研究方向	Geology
语种	英语
出版者	WILEY
WOS记录号	WOS:000463807400022
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/24756]
专题	自然资源部第一海洋研究所
通讯作者	Wang, Genhou
作者单位	1.Ocean Univ China, Coll Marine Geosci, Minist Educ, Key Lab Submarine Geosci & Prospecting Tech, Qingdao, Shandong, Peoples R China 2.SOA, Key Lab Marine Sedimentol & Environm Geol, Qingdao, Shandong, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao, Shandong, Peoples R China 4.China Univ Geosci, Sch Earth Sci & Resources, 29 Chengfu Rd, Beijing 100083, Peoples R China 5.Univ Adelaide, Dept Earth Sci, Adelaide, SA, Australia 6.Yonsei Univ, Dept Earth Syst Sci, Seoul, South Korea
推荐引用方式 GB/T 7714	Zhou, Jie,Li, Sanzhong,Wang, Genhou,et al. Eocene porphyry copper deposits in the eastern Tibetan Plateau, China: Uplift, denudation, and implications for mineral exploration[J]. GEOLOGICAL JOURNAL,2019,54(2):991-1012.
APA	Zhou, Jie.,Li, Sanzhong.,Wang, Genhou.,Santosh, M..,Zhang, Li.,...&Li, Xiyao.(2019).Eocene porphyry copper deposits in the eastern Tibetan Plateau, China: Uplift, denudation, and implications for mineral exploration.GEOLOGICAL JOURNAL,54(2),991-1012.
MLA	Zhou, Jie,et al."Eocene porphyry copper deposits in the eastern Tibetan Plateau, China: Uplift, denudation, and implications for mineral exploration".GEOLOGICAL JOURNAL 54.2(2019):991-1012.