Exhumation History and Exploration Potential of Gold Deposits in the NE Jiaodong Peninsula,North China:Evidence from Apatite and Zircon Fission Track Thermochronology

作     者：Yuanlin Chen Huan Li Chaoyang Zheng Safiyanu Muhammad Elatikpo Liu’an Duan Bo Feng Dadou Li Rehan Khan Yuanlin Chen;Huan Li;Chaoyang Zheng;Safiyanu Muhammad Elatikpo;Liu'an Duan;Bo Feng;Dadou Li;Rehan Khan

作者机构：Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment MonitoringMinistry of EducationSchool of Geosciences and Info-PhysicsCentral South UniversityChangsha 410083China College of Resources and Environmental EngineeringGuizhou UniversityGuiyang 550025China Department of GeologyAhmadu Bello University ZariaNigeria Yantai Geological Survey Center of Coastal ZoneChina Geological SurveyYantai 264004China Xintai Gold and Mining Industry Co.LtdYantai 265147China No.1 Institute of Geology and Mineral Resources of Shangdong ProvinceJinan 250100China 

出 版 物：《Journal of Earth Science》 (地球科学学刊（英文版）)

年 卷 期：2023年第34卷第3期

页      面：776-789页

核心收录：

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] 0708[理学-地球物理学] 

基　　金：co-financed by the National Key Research and Development Plan(No.2016YFC0600104) the Geological Research Project of China the National Gold Group Co.,Ltd. Xintai Gold Mining Co.,Ltd(Yantai,Shandong)(No.XY-DZ2020081)。 

主　　题：Queshan pluton Muniushan pluton thermal history simulation apatite zircon exhumation magnitude exploration potential gold deposits Guocheng gold belt 

摘      要：As the most important gold producer in China,the Northwest Jiaodong Peninsula is famous for its large gold deposits.In recent years,the discovery of gold mineralization has reached a depth of 4000 m below the surface in this region.It has attracted significant interest from explorers about the prospecting potential at greater depths.Besides,the current deep drilling shows that the prospecting effect in the west portion is better than the region to the east.Does it imply that there is a difference in prospecting potential between the east and the west?This paper seeks to address the issue through fission track thermochronology on apatite and zircon to reveal the temperature-time evolution relationship of rock mass and to inverts their thermal evolution history.In addition,this study analyzes the transformation of ore deposits after mineralization,quantitatively calculates the uplift-erosion rate of rock mass,and summarizes the preservation law of ore deposits.Based on the thermal history simulation of the apatite fission track,our results show that the Guocheng gold belt has experienced three stages of thermal evolution:108-74,74-27,and 27-0 Ma.The uplift and cooling processes of the threestage tectonic uplift events are the results of multi-stage Pacific plate accretion.The calculated total denudation depth of the gold deposit in the Guocheng gold belt from Cretaceous to the present is about 3.4-5.3 km.The metallogenic depth of the ore body in the gold belt is 5.6-8.0 km,which indicates that the ore body in the Guocheng gold belt has suffered a significant degree of denudation.It is speculated that the location with less denudation in the southwest has greater prospecting potential.Our results quantitatively identify the uplift and denudation of the deposit after mineralization,which provides a new theoretical reference for regional mineralization,deep prospecting and exploration.