The Dayin'gezhuang gold deposit is located in the central part of the Zhaoping Fault metallogenic belt in the Jiaodong gold province—the world 's third-largest gold metallogenic area. It is a typical successful case of prospecting at a depth of 500?2000 m in recent years, with cumulative proven gold resources exceeding 180 t. The main orebodies (No. 1 and No. 2 orebody) generally have a pitch direction of NNE and a plunge direction of NEE. As the ore-controlling fault, the Zhaoping Fault is a shovel-shaped stepped fault, with its dip angle presenting stepped high-to-low transitions at the elevation of?2000?0 m. The gold mineralization enrichment area is mainly distributed in the step parts where the fault plane changes from steeply to gently, forming a stepped metallogenic pattern from shallow to deep. It can be concluded from previous studies that the gold mineralization of the Dayin 'gezhuang gold deposit occurred at about 120 Ma. The ore-forming fluids were H2O-CO2-NaCl-type hydrothermal solutions with a medium-low temperature and medium-low salinity. The H-O isotopic characteristics indicate that the fluids in the early ore-forming stage were possibly magmatic water or mantle water and that meteoric water gradually entered the ore-forming fluids in the late ore-forming stage. The S and Pb isotopes indicate that the ore-forming materials mainly originate from the lower crust and contain a small quantity of mantle-derived components. The comprehensive analysis shows that the Dayin 'gezhuang gold deposit was formed by thermal uplifting-extensional tectonism. The strong crust-mantle interactions, large-scale magmatism, and the material exchange arising from the transformation from adakitic granites to arc granites and from the ancient lower crust to the juvenile lower crust during the Early Cretaceous provided abundant fluids and material sources for mineralization. Moreover, the detachment faults formed by the rapid magmatic uplift and the extensional tectonism created favorable temperature and pressure conditions and space for fluid accumulation and gold precipitation and mineralization.

Xiang-dong Liu;Zheng-jiang Ding;Ming-chun Song;Ming-ling Zhou;Shao-hui Xu;Zhen-liangYang;Tian-ci Xie;Tao Cui;Ying-xin Song;Xue-kan Gao;Rui-xiang Li;Liang-liang Zhang;Qi-bin Zhang;Shan-shan Wang;Bin Wang

No.6 Geological Team of Shandong Provincial Bureau of Geology and Mineral Resources,Weihai 264209,China;Ministry of Natural Resources Technology Innovation Center for Deep Gold Resources Exploration and Mining,Weihai 264209,China;State Key Laboratory of Geological Process and Mineral Resources,China University of Geosciences(Beijing),Beijing 100083,China;Hebei Key Laboratory of Strategic Critical Mineral Resources,Hebei GEO University,Shijiazhuang 050031,China;Shandong Institute of Geological Sciences,Jinan 250013,China;Dayin'gezhuang Gold Company,Zhaojin Mining Co.,Ltd.,Zhaoyuan 264000,China

中国地质（英文）

[1]Xiang-dong Liu;Zheng-jiang Ding;Ming-chun Song;Ming-ling Zhou;Shao-hui Xu;Zhen-liangYang;Tian-ci Xie;Tao Cui;Ying-xin Song;Xue-kan Gao;Rui-xiang Li;Liang-liang Zhang;Qi-bin Zhang;Shan-shan Wang;Bin Wang-.Geology and mineralization of the Dayin'gezhuang supergiant gold deposit (180 t) in the Jiaodong Peninsula, China:A review)[J].中国地质（英文）,2022(04):696-721

Dayin,gezhuang,supergiant,Zhaoping,orebody

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