Paleozoic Epithermal Au and Porphyry Cu Deposits in North Xinjiang,China:Epochs,Features,Tectonic Linkage and Exploration Signi ficance
会议名称：《中国科学院地质与地球物理研究所2003学术年会》
会议日期：2003年
学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程]
基 金：supported by the Major State Basic Research Program of China(2001CB409810) NSFC project(40072028) Xinjiang 305 project(96-915-07) CAS Knowledge Innovation Project(KZCX3-SW- 137)
关 键 词：Paleozoic porphyry Cu epithermal Au epochs accretionary arc North Xinjiang NW China
摘 要：Based on field investigation of large number of ore deposits including some latest discoveries and multidiscipline comprehensive research,we demonstrated the general features of metallic deposits and we suggest that Paleozoic archipelago -type collisional orogen at North Xinjiang,northwestern China show intimate similarity with the metallogenesis of Southeast Asia Cenozoic *** briefly described the characteristics of major porphyry-type,skarn-type Cu deposits and typical high-sulfidation type(HS-type) and low-sulfidation type(LS-type) epithermal Au deposits as well as some latest *** isotopic age-dating on the Tuwu-Yandong superlarge porphyry Cu deposits revealed that they formed in Late Devonian to Early Carboniferous in an accretionary arc *** tectonic settings of epithermal Au deposits and its linkage with porphyry Cu deposits are further *** formation condition for porphyry Cu deposits is more strict than epithermal Au *** distribution width for porphyry Cu deposits in the orogenle belts is more limited than epithermal Au *** discovery and prospecting progress of the Kalatage HS-typc Cu-Au deposit were *** significance in further exploration was suggested.