地质通报2025，Vol.44Issue(4)：534-551,18.DOI:10.12097/gbc.2024.09.005
东昆仑三叠纪斑岩成矿系统及成矿模式
Metallogenic system and metallogenic model of Triassic porphyry deposits in the East Kunlun orogenic belt
摘要
Abstract
[Objective]The PaleoTethys tectonic evolution triggered important porphyry magma-mineralization in the East Kunlun orogenic belt,resulting in strong magmatic activity,complex and diverse mineralization types and endowment mineral resources.At present,a systematic review and summary of the diagenetic and mineralization ages and mineralization characteristics of porphyry have not yet been carried out.In order to enhance our understanding of the mineralization system and mineralization model of porphyry-type deposits in the Eastern Kunlun area.[Methods]On the basis of collecting previous data,this paper summarizes the spatial and temporal distribution,metallogenic types and metallogenic rules of ore-producing porphyry and porphyry type deposits,and studies the evolution of paleo-Tethys structure and porphyry mineralization process.[Results]The ore-producing porphyry and porphyry deposits in East Kunlun area are located in the northern and central Quinqueinian magmatic arcs,and their ages are concentrated between 218 Ma and 236 Ma.Mainly formed porphyry Cu,porphyry Mo,porphyry Cu-Mo,porphyry Cu-Au,porphyry Cu-Sn deposit five types,the discovered ore bodies are mainly located in the top or side of the porphyry tectonic belt,the structure is the most important ore-controlling factor,the size of the porphyry-related low-temperature vein type Ag-Pb-Zn mineralization often reaches large-super large.[Conclusions]It is considered that the most important dynamic background for the mineralization of porphyry deposits is the partial melting of mantle enrichment induced by asthenosphere mantle upgassing caused by subduction plate fragmentation in early cocollision orogeny and the partial melting of new crust and thickened lower crust induced by asthenosphere upgassing in post-collision extension stage.The metallogenic model of porphyry type,skarn type,cryptoexplosive breccia type and epithermal vein typedeposit was established.关键词
斑岩型矿床/成矿规律/成矿系统/成矿模式/三叠纪/东昆仑Key words
porphyry deposit/metallogenic regularity/metallogenic system/metallogenic model/Triassic period/East Kunlun分类
地质学引用本文复制引用
马忠元,张金阳,张勇,马强,李军..东昆仑三叠纪斑岩成矿系统及成矿模式[J].地质通报,2025,44(4):534-551,18.基金项目
青海省昆仑英才"高端创新创业人才计划"项目《青藏高原北缘三叠纪斑岩铜多金属矿成矿作用研究》(编号:青地矿[2024]118号)和青海省第三地质勘查院自筹科研项目(编号:SKYZC-2022-007) （编号:青地矿[2024]118号）
