沉积与特提斯地质2025，Vol.45Issue(4)：712-723,12.DOI:10.19826/j.cnki.1009-3850.2025.11008
西藏特提斯喜马拉雅西段加当莫铅锌矿的发现及对区域矿产勘查的意义
Discovery of the Jiadangmo Pb-Zn deposit in western Tethyan Himalaya,Xizang,and its significance for regional mineral exploration
摘要
Abstract
The Tethyan Himalaya in Xizang boasts favorable geological conditions for Pb-Zn mineralization;however,the Pb-Zn deposits discovered so far are mainly distributed in its eastern segment.Through 1∶50,000 mineral geological surveys and surface engineering exposures,a new hydrothermal Pb-Zn deposit has been evaluated in the Jiadangmo area north of the Majia-Sajia-Kudui dome.It is preliminarily considered to have the resource potential of a medium-sized or larger deposit.The ore bodies of the Jiadangmo Pb-Zn deposit are mainly controlled by north-west to south-east trending compressional faults and formed during the main collisional orogenic metallogenic stage of the Indian-Eurasian continent after the closure of the Neo-Tethys Ocean.The ore bodies are characterized by large thickness,relatively high grade,and stable extension.The main metallic minerals include pyrite,galena,sphalerite,and small amounts of chalcopyrite,tetrahedrite,azurite,and malachite;the non-metallic minerals consist of quartz,sericite,siderite,and a small amount of calcite.Wall-rock alterations such as silicification,sericitization,pyritization,carbonatization,and limonitization develop well.During the Pb-Zn mineralization stage of the hydrothermal metallogenic period,a large number of ore-bearing quartz-siderite veins developed,which are significantly different from those of other lead-zinc deposits in the Tethyan Himalaya.The discovery and report of this deposit have expanded the prospecting range for Pb-Zn in the Tethyan Himalaya,provided a new case for enriching and improving regional Pb-Zn metallogenesis,and hold important scientific and practical significance for deepening the theory of Pb-Zn metallogenesis in the Tethyan Himalaya and guiding regional mineral exploration.关键词
特提斯喜马拉雅西段/铅锌矿/麻迦—萨迦—苦堆穹窿/地球化学勘查/加当莫Key words
western Tethyan Himalaya/Pb-Zn deposit/Majia-Sajia-Kudui dome/geochemical exploration/Jiadangmo分类
天文与地球科学引用本文复制引用
李洪梁,廖锰,邱建,许伦,孟凡清,张子宣,黄勇,郑强,邱东,张鹏程,黄岗,何真贵,丁枫,李警..西藏特提斯喜马拉雅西段加当莫铅锌矿的发现及对区域矿产勘查的意义[J].沉积与特提斯地质,2025,45(4):712-723,12.基金项目
中国地质调查局地质调查项目(DD20243086,DD20240014) （DD20243086,DD20240014）
自然资源部新一轮找矿突破科技支撑项目(ZKKJ202427-03) （ZKKJ202427-03）
西藏自治区科技计划项目(XZ202401YD0006-07) （XZ202401YD0006-07）
