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Exhumation and Preservation of Paleozoic Porphyry Cu Deposits: Insights from the Yandong Deposit, Southern Central Asian Orogenic Belt

文献类型：期刊论文

作者Gong, Lin1,2,3; Kohn, Barry P.4; Zhang, Zhiyong5; Xiao, Bing2; Wu, Lin5; Chen, Huayong2,3
刊名ECONOMIC GEOLOGY
出版日期2021-05-01
卷号116期号:3页码:607-627
ISSN号0361-0128
DOI10.5382/econgeo.4812
英文摘要Paleozoic porphyry copper deposits are generally much less common than their Mesozoic or Cenozoic counterparts, as they can be completely eroded in rapidly uplifting arcs. There are, however, some large Paleozoic porphyry copper deposits preserved worldwide, especially in the Central Asian orogenic belt, although the processes by which these ancient porphyry deposits were preserved are poorly constrained. The Carboniferous Yandong porphyry copper deposit was selected as a case study to resolve this issue using a combination of thermal history models derived from low-temperature thermochronology data and regional geologic records. Our results show that Yandong preserves a record of at least two episodes of cooling separated by a phase of mild Middle Jurassic reheating. These two cooling events included one major event, linked to the Qiangtang collision or northward motion of Tarim plate during the late Permian to Triassic, and one minor event, possibly related to the Lhasa collision or closure of Mongol-Okhotsk Ocean from the Middle Jurassic to Early Cretaceous, respectively. Tectonic quiescence and limited exhumation prevailed from the Late Cretaceous to Cenozoic in the Yandong area. Combining our results with regional geologic records, we propose that extensional tectonic subsidence, postmineralization burial, dry paleoclimatic conditions, and Cenozoic tectonic quiescence were key factors for the preservation of Yandong. This study demonstrates that anomalously old apatite fission track ages, integrated with age-elevation relationships, can have implications for mineral exploration strategies in the Chinese Tianshan orogens.
资助项目Type-B Chinese Academy of Sciences Strategic Pilot Science and Technology Special[XDB18030206] ; Chinese National Fund for Distinguished Young Scholars[41725009] ; National Natural Science Foundation of China[U1603244] ; AuScope program of the National Collaborative Research Infrastructure Strategy (NCRIS)
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
WOS记录号WOS:000637287600004
出版者SOC ECONOMIC GEOLOGISTS, INC
资助机构Type-B Chinese Academy of Sciences Strategic Pilot Science and Technology Special ; Type-B Chinese Academy of Sciences Strategic Pilot Science and Technology Special ; Chinese National Fund for Distinguished Young Scholars ; Chinese National Fund for Distinguished Young Scholars ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; AuScope program of the National Collaborative Research Infrastructure Strategy (NCRIS) ; AuScope program of the National Collaborative Research Infrastructure Strategy (NCRIS) ; Type-B Chinese Academy of Sciences Strategic Pilot Science and Technology Special ; Type-B Chinese Academy of Sciences Strategic Pilot Science and Technology Special ; Chinese National Fund for Distinguished Young Scholars ; Chinese National Fund for Distinguished Young Scholars ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; AuScope program of the National Collaborative Research Infrastructure Strategy (NCRIS) ; AuScope program of the National Collaborative Research Infrastructure Strategy (NCRIS) ; Type-B Chinese Academy of Sciences Strategic Pilot Science and Technology Special ; Type-B Chinese Academy of Sciences Strategic Pilot Science and Technology Special ; Chinese National Fund for Distinguished Young Scholars ; Chinese National Fund for Distinguished Young Scholars ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; AuScope program of the National Collaborative Research Infrastructure Strategy (NCRIS) ; AuScope program of the National Collaborative Research Infrastructure Strategy (NCRIS) ; Type-B Chinese Academy of Sciences Strategic Pilot Science and Technology Special ; Type-B Chinese Academy of Sciences Strategic Pilot Science and Technology Special ; Chinese National Fund for Distinguished Young Scholars ; Chinese National Fund for Distinguished Young Scholars ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; AuScope program of the National Collaborative Research Infrastructure Strategy (NCRIS) ; AuScope program of the National Collaborative Research Infrastructure Strategy (NCRIS)
源URL[http://ir.iggcas.ac.cn/handle/132A11/101111]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Chen, Huayong
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China
3.Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou 510640, Guangdong, Peoples R China
4.Univ Melbourne, Sch Earth Sci, Melbourne, Vic 3010, Australia
5.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Gong, Lin,Kohn, Barry P.,Zhang, Zhiyong,et al. Exhumation and Preservation of Paleozoic Porphyry Cu Deposits: Insights from the Yandong Deposit, Southern Central Asian Orogenic Belt[J]. ECONOMIC GEOLOGY,2021,116(3):607-627.
APA Gong, Lin,Kohn, Barry P.,Zhang, Zhiyong,Xiao, Bing,Wu, Lin,&Chen, Huayong.(2021).Exhumation and Preservation of Paleozoic Porphyry Cu Deposits: Insights from the Yandong Deposit, Southern Central Asian Orogenic Belt.ECONOMIC GEOLOGY,116(3),607-627.
MLA Gong, Lin,et al."Exhumation and Preservation of Paleozoic Porphyry Cu Deposits: Insights from the Yandong Deposit, Southern Central Asian Orogenic Belt".ECONOMIC GEOLOGY 116.3(2021):607-627.

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来源：地质与地球物理研究所

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