黔南台陷碳酸盐型铅锌矿床成矿条件及找矿模型

志留纪末期广西运动，使扬子淮地台与华南褶皱带碰拼接在一起形成统一地台后，在泥盆纪时期地台活化为张性，晚泥盆世产生了沿基地断裂的热液活动并成矿，这就是黔南台陷成矿的地质背景，通过典型矿床特征分析，把黔南台陷中的铅锌矿床分为两类；即与同生沉作用相关的锌矿床和以顺层充填和交代作用为主的热液型铅锌矿床，对成矿地质条件进行分析，指出了区域成矿模式及找矿模型，认为黔南台陷铅锌矿床成因为产于碳酸盐岩中的沉积改造型铅锌矿床和热液型铅锌矿床。

Mineralization Condition and Ore-finding Model for the Carbonate Type Pb-Zn Deposits of the Platform Collapse in South Guizhou

Since the Guangxi movement of the last Siliceous give rise to the collision between Yangtze paraplatform and Huanan folded zone and conjoined in a complete platform, it appears activated and turned to be tensional in the Devonian, and generated the hydrothermal activity along the base faults in the Late Devonian and lastly mineralized, which is the mineralization setting of the platform collapse in south Guizhou. The Pb-Zn deposits in the platform collapse of south Guizhou are divided into two types by means of analysis on the feature typical deposits, the first is Zn deposit involved with concurrence sedimentation and the second is the hydrothermal Pb-Zn deposit of the bedding filling and the metasomatizm in major. The analysis on the geological condition is conducted and the regional mineralized pattern and prospecting model are given, it is considered that the genesis of the carbonate type Pb-Zn deposits of the platform collapse in south Guizhou is the depositing-reworking type Pb-Zn deposits and the hydrothermal type Pb-Zn deposits occurred within the carbonate.