沉积与特提斯地质2025，Vol.45Issue(3)：605-616,12.DOI:10.19826/j.cnki.1009-3850.2024.12002
喜马拉雅带夏隆岗铅锌锑多金属矿床成矿年代学与控矿因素解析:对后碰撞伸展成矿作用的启示
Metallogenic chronology and ore-controlling factors of the Xialonggang Pb-Zn-Sb polymetallic deposit in the Himalayan belt:Implications for post-collision extension mineralization
摘要
Abstract
The Xialonggang Pb-Zn-Sb polymetallic deposit is located in the Zhaxikang ore concentration area on the eastern margin of the Himalayan metallogenic belt,which has recently achieved a major breakthrough in prospecting.However,the metallogenic chronology and key ore-controlling factors of the deposit remain unclear,restricting prospecting and exploration.In this paper,the sericite Ar-Ar dating method is used to determine the metallogenic age of the deposit.The results show that the sericite plateau age is(14.91±0.21)Ma and the corresponding isochron age is(14.66±0.47)Ma in the temperature range of 800-900℃.This age can represent the hydrothermal mineralization age of the Xialonggang Pb-Zn-Sb polymetallic deposit,indicating that the Xialonggang Pb-Zn-Sb polymetallic deposit formed in the Miocene.Based on systematic sorting of prospecting information,we suggest that the NE-SW-trending extensional fault structures,high-intensity Pb-Zn-Sb-Ag combined geochemical anomalies,medium-to-low resistance and medium-to-high polarizability geophysical anomalies are the key prospecting indicators.Comprehensive studies show that the Xialonggang Pb-Zn-Sb polymetallic deposit is similar to other Pb-Zn-Sb polymetallic deposits in the Zhaxikang ore concentration area,all of which are the products of remote mid-to-low temperature mineralization related to the Miocene leucogranite magmatism in Cuonadong.It is a typical representative of the mineralization during the post-collision extension stage in the Himalayan metallogenic belt.In addition,the key ore-controlling factors summarized in this paper will provide a demonstration case for the exploration of Pb-Zn-Sb polymetallic mineralization in the post-collision stage of the Himalayan belt.关键词
夏隆岗/铅锌锑多金属矿床/成矿年代学/喜马拉雅成矿带Key words
Xialonggang/Pb-Zn-Sb polymetallic deposit/metallogenic chronology/Himalayan metallogenic belt分类
天文与地球科学引用本文复制引用
代克刚,康晓波,白云,赵洪飞,马国桃,李静,王达,张伟..喜马拉雅带夏隆岗铅锌锑多金属矿床成矿年代学与控矿因素解析:对后碰撞伸展成矿作用的启示[J].沉积与特提斯地质,2025,45(3):605-616,12.基金项目
西藏自治区隆子县夏隆岗铅多金属矿普查 （）
中国地质调查局项目(DD20240069,DD20242472) （DD20240069,DD20242472）
国家自然科学基金项目(41702080) （41702080）
