【摘要】 西藏亚贵拉铅锌多金属矿是目前西藏地区最大的层状沉积型铅锌多金属矿床。该矿床产出的大地构造位置独特,成矿地质条件良好。本文从含矿建造、断裂构造、岩浆岩特征及其对成矿的控制作用分析入手,分析研究了矿体特征、矿石组构特征及围岩蚀变,揭示了亚贵拉铅锌多金属矿床的形成经历了晚古生代海底热水喷流沉积成矿和喜山期岩浆热液叠加成矿两期成矿作用,是典型的海底喷流沉积-岩浆热液叠加改造型铅锌多金属矿床。更多还原

【Abstract】 The Yaguila Pb-Zn polymetallic deposit is the largest stratform sedimentary-hosted Pb-Zn multi-metal ore deposit.The deposit is located in a distinctive geotectonic setting,which is very favourable for mineralization in Yaguila.In the light of the geolocal setting including mineral-bearing formation,fault-structure and magmatic activity and their correlation to ore-forming,the nature of orebody,ore texture and the alteration of host rocks indicate that the formation of the Yaguila Pb-Zn polymetallic deposit constists of two stages: late Paleozoic submarine hydrothermal exhalative-sedimentary ore and Himalayan magmatic-derived hydrothermal fluid overprinted the sedimentary exhalative ore.Consequently,the Yaguila deposit is a typical submarine sedimentary exhalative-derived magmatic hydrothermal superimposion and reformaion Pb-Zn polymetallic ore deposit.更多还原