摘要
兰坪金顶铅锌矿床是我国至今所发现的最大的铅锌矿床,类型特殊,蕴藏集中。对其成矿物质来源进行研讨,无论在矿床成因理论上或指导找矿实践方面均具有重要意义。金顶铅锌矿床除聚集铅锌金属外,银、镉、铊、锶、硫铁矿等矿产也具相当规模,它们间的成矿物质来源不完全相同。本文仅就铅源进行讨论。一、地质简况矿区位于三江褶皱系南段(澜沧江—哀牢山褶皱系)。
According to 42 Iead isotopic results determined from the Jinding lead-zinc deposit in Lanping county, this paper probed the source of metallogenic metal leads of the said deposit. It is considered that most parts of the ore leads came from the mantle-sourced leads produced by repeatedly geological events in deep source area except for the whole rock leads and very few ore leads heing from the Chinese palaeocontinental crust(crust-sourced leads). Their homogenization time and transform time of the mantle convection cell together with the occurrence time for geologic events in the course of regional geological development and evolution of this area are all consistent. This deposit is the largest one found in China so far with reserves very centered. The information provided by lead isotopes is of important significance for the genetic research of this deposit.
出处
《云南地质》
1990年第1期25-36,共12页
Yunnan Geology
