Structural Ore-controlling Model for the Super-large Hadamengou Gold Deposit in Inner Mongolia,China  

作　　者：WANG Da YANG Biao XU Daxing LI Xiaoshuang FAN Songhao SU Panyun MA Huchao WANG Guilong WANG Gaotian MA Lei LIU Wencan 

机构地区：[1]State Key Laboratory of Geological Processes and Mineral Resources,School of Earth Sciences and Resources,China University of Geosciences,Beijing 100083,China [2]Hohhot Natural Resources Comprehensive Survey Center of China Geological Survey,Hohhot 010010,China [3]School of Geosciences,Chengdu University of Technology,Chengdu 610059,China [4]Zhong Jin Gold Corporation Limited,Beijing 100010,China [5]Inner Mongolia Nonferrous Geology and Mining(Group)Dibo Mining Co.,Ltd.,Hohhot 010010,China [6]Division of Science and Technology,China University of Geosciences,Beijing 100083,China

出　　处：《Acta Geologica Sinica(English Edition)》2025年第2期499-521,共23页地质学报(英文版)

基　　金：the financial support by the Major Research Plan of National Natural Science Foundation of China(92062219);the Young Elite Scientists Sponsorship Program by BAST(No.BYESS2023411);the Open Research Project from the State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences(GPMR202407);the Geological Survey Project of the China Geological Survey„General survey of Hadamengou Rock Gold Deposit in Inner Mongolia'(DD20191017);the Geological Survey Project(H90063).

摘　　要：Controversy is ongoing regarding the relationship between ore formation and the structural evolution of the Hadamengou gold deposit.To address this issue,we conducted a comprehensive investigation of mineralization-related structures,geochronology and Fe isotopes.From the perspective of spatial evolution,hydrothermal fluids originating from the Shadegai and Xishadegai plutons have extracted accumulated ore-forming elements from the Wulashan Group(Ar2WL)and then evolved,initiating at Exploration Line 11 and migrating eastwards and westwards along the EW-trending thrust fault system to form orebodies.From the temporal evolution standpoint,the Wulashan Group(Ar_(2)WL)experienced diagenesis(2591.00 Ma to 2204.00 Ma)and metamorphism(2074.00 Ma to 1625.00 Ma)from late Neoarchean to early Paleoproterozoic,when ore-forming materials were initially accumulated;in the early Paleozoic(440.71 Ma to 425.00 Ma),the collision led to the formation of early-stage EW-trending imbricated thrust faults,which established a fundamental structural framework for the orefield and further accumulated ore-forming materials;from the late Paleozoic to the Mesozoic,multiple subsequent episodes of regional tectonic-magmatic-hydrothermal events have superimposed,modified and reactivated the thrust fault system.Notably,the Triassic period,particularly between 245.00 Ma and 217.90 Ma,is considered to be a primary ore-forming stage.In summary,the intricate relationship between ore-formation and structural evolution has been fundamentally elucidated.

关 键 词：Fe isotope GEOCHRONOLOGY thrust fault system structural ore-controlling model Hadamnegou Au deposit 

分 类 号：P618.13[天文地球—矿床学]