沉积与特提斯地质2017，Vol.37Issue(2)：1-13,13.
班公湖-怒江成矿带金成矿规律及成矿作用初讨
Gold mineralization in the Bangong Lake-Nujiang metallogenic zone, Xizang
摘要
Abstract
The gold deposits have long been known as one of the dominant mineral resources in the Bangong Lake-Nujiang metallogenic zone in Xizang.In the present paper,the authors carry out a preliminary study of geological setting,genetic type,spatio-temporal distribution and mineralization of the gold deposits on the basis of previous results and field geological survey.The findings have disclosed that the gold deposits (spots) in the Bangong Lake-Nujiang metallogenic zone are E-W oriented,and occur mostly as paragenetic gold and associated gold,and scarcely as single gold.The above-mentioned gold deposits may be classified into four types:skarn-type,porphyrytype,orogeny-type and supergene low-temperature hydrothermal type.The mineralization ages may be traced back to the Late Jurassic to the Late Cretaceous.These gold deposits may be involved into two mineralization systems,including the magmatic-hydrothermal gold mineralization system associated with the oceanic crust subduction and the gold mineralization system associated with the continental collision and mountain-building.The former may be composed of three types of deposits:the supergene low-temperature hydrothermal type copper-gold deposit,porphyry-type copper-gold deposit and skarn-type gold-copper deposit,whereas the latter may be subdivided into three types as well:supergene low-temperature hydrothermal type copper-gold deposit,orogeny-type gold deposit and skarn-type gold-copper deposit.关键词
金矿床/时空分布/成矿作用/矿床类型/班公湖-怒江成矿带Key words
gold deposit/spatio-temporal distribution/mineralization/deposit type/Bangong Lake-Nujiang metallogenic zone分类
天文与地球科学引用本文复制引用
李永灿,黄瀚霄,刘洪,吕梦鸿,兰双双..班公湖-怒江成矿带金成矿规律及成矿作用初讨[J].沉积与特提斯地质,2017,37(2):1-13,13.基金项目
中国地质调查项目(DD20160015、DD20160026)和国家重点研发计划(2016YFC0600308)联合资助 （DD20160015、DD20160026）
