Geology, geochronology, and exploration of the Jiama giant porphyry copper deposit (11 Mt), Tibet, China: A review  

作　　者：Bin Lin Ju-xing Tang Pan Tang Wen-bao Zheng Yang Song Fa-qiao Li Qiu-feng Leng Zhi-chao Wang Jing Qi Miao Sun Juan David Bello Rodríguez 

机构地区：[1]MNR Key Laboratory of Metallogeny and Mineral Assessment,Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China [2]Department of Geology and Geological Engineering,University Laval,QC G1V 0A6,Canada [3]The Key Laboratory of the Ministry of Education on Solid Waste Treatment and Recycling,School of Environment and Resource,Southwest University of Science and Technology,Mianyang 621010,China [4]Chengdu Center,China Geological Survey,Chengdu 610081,China [5]School of Earth Science and Resources,China University of Geosciences(Beijing),Beijing 100083,China

出　　处：《China Geology》2023年第2期338-357,I0042-I0045,共24页中国地质（英文）

基　　金：supported by the National Key Research and Development Program of China (2022YFC2905001);the National Natural Science Foundation of China (42272093,42230813);China Scholarship Council project;the Geological Survey project (DD20230054)

摘　　要：Jiama,with more than 11 Mt of copper metal,is the largest porphyry-skarn copper system in the Gangdese metallogenic belt,Tibet,China,creating ideal conditions for deciphering the origin of porphyry ores in a collision setting.Despite massive studies of the geology,chronology,petrogenesis,and ore-related fluids and their sources in Jiama,there is a lack of systematic summaries and reviews of this system.In contrast to traditional porphyry copper systems in a subduction setting,recent studies and exploration suggest that the Jiama deposit includes porphyry-type Mo-Cu,skarn-type Cu polymetallic,vein-type Au and manto orebodies.This paper reviews the latest studies on the geology,chronology,petrogenesis,fluid inclusions,and isotopic geochemistry(hydrogen,oxygen,sulfur,and lead)of the Jiama deposit.Accordingly,a multi-center complex mineralization model was constructed,indicating that multi-phase intrusions from the same magma reservoir can form multiple hydrothermal centers.These centers are mutually independent and form various orebodies or are superimposed on each other and form thick,high-grade orebodies.Finally,a new comprehensive exploration model was established for the Jiama porphyry copper system.Both models established in this study help to refine the theories on continental-collision metallogeny and porphyry copper systems.

关 键 词：Copper deposit Porphyry copper system O-S-Pb isotope Multicenter complex mineralization Comprehensive exploration model Mineral exploration engineering Gangdese metallogenic belt JIAMA TIBET 

分 类 号：P618.41[天文地球—矿床学]