沉积与特提斯地质2025，Vol.45Issue(2)：375-393,19.DOI:10.19826/j.cnki.1009-3850.2025.04004
初论喜马拉雅后碰撞伸展期与新生代花岗岩相关的稀有-锡钨-铅锌-金锑成矿系统:以错那洞矿集区为例
The rare metals-tin-tungsten-lead-zinc-gold-antimony metallogenic system associated with Cenozoic granites during the post-collision extension period in Himalaya:A case study of Cuonadong ore concentration area
摘要
Abstract
The post-collisional extensional mineralization in the Himalayan region is a significant component of the Indo-Asian collisional ore-forming processes.Currently,this belt has developed from a traditional gold-antimony-lead-zinc belt into a polymetallic metallogenic belt of lithium,beryllium,tin,tungsten,lead,zinc,gold,and antimony.Most of these polymetallic mineralizations occur in the dome structures where Cenozoic highly fractionated granites have developed,as well as their peripheries.The metallogenic ages are concentrated in the Miocene,but the relationships among them are not clear.Taking the Cuonadong ore concentration area with the most complete metallogenesis in the eastern Himalayas as an example,this paper preliminarily establishes a metallogenic system model of rare metals-tin-tungsten-lead-zinc-gold-antimony related to Cenozoic highly fractionated granites in the Himalayas.This paper proposes that the Cenozoic highly fractionated granites and their related pegmatites in the Himalayas directly control the occurrence of rare metal deposits.Tin and tungsten deposits occur near the rock mass,lead and zinc deposits occur in the middle and far ends,and gold and antimony deposits occur in the outermost periphery,thus forming a polymetallic hydrothermal metallogenic system related to magmatic activity and showing an obvious zoning of metallogenic elements from high temperature to medium temperature to medium-low temperature.Highly fractionated granites provide the main ore-forming fluids and ore-forming substances for rare,tin-tungsten,and lead-zinc mineralizations,but may only provide thermal drive or a small amount of hydrothermal fluids for gold-antimony mineralizations and do not provide ore-forming substances.Therefore,the rare metal-tin-tungsten-lead-zinc-gold-antimony metallogenic system related to Cenozoic highly fractionated granites in the Himalayas is a metallogenic system with different sources at the same time.Based on the zoning and emplacement laws of deposits around the magmatic-dome structure,combined with the"absence prospecting"idea,it can serve as an important guidance for regional prospecting exploration and prognosis during the post-collisional extension period of the Himalayas.关键词
新生代花岗岩/成矿系统/元素分带/后碰撞/喜马拉雅成矿带Key words
Cenozoic granites/metallogenic system/element zonation/post-collision/Himalayan metallogenic belt分类
天文与地球科学引用本文复制引用
张志,杨毅,李光明,张林奎,焦彦杰,王艺云,马国桃,夏祥标,卿成实,董磊..初论喜马拉雅后碰撞伸展期与新生代花岗岩相关的稀有-锡钨-铅锌-金锑成矿系统:以错那洞矿集区为例[J].沉积与特提斯地质,2025,45(2):375-393,19.基金项目
科技部国家重点研发计划(2023YFC2906805,2021YFC2901903) （2023YFC2906805,2021YFC2901903）
西藏自治区科技计划项目(XZ202301YD0030C) （XZ202301YD0030C）
国家自然科学基金(41702080,91955208) （41702080,91955208）
中国地质调查局地质调查项目(DD20240069,DD20242472,DD202402028) （DD20240069,DD20242472,DD202402028）
