黔北地区桃园向斜铝土矿矿床地质特征及找矿方向

摘要

The Taoyuan syncline,located in the east of Daozhen County,Guizhou Province,is a component of the bauxite deposit in Wuchuan-Zhengan-Daozhen area.The deposit occurs in the Permian Liangshan Formation,belonging to the sedimentary type.The sedimentary discontinuity in geological history played an important role for the forming of bauxite.By analyzing the ore-forming geological background and geologic characteristics of deposit,the ore-controlling factors and exploration guide in the Taoyuan syncline are summarized.It is pointed out that there is still great ore potential in deep and western limb of the syncline.%桃园向斜铝土矿位于道真县东部,是务川-正安-道真地区铝土矿的一个组成部分.该铝土矿产于二叠纪梁山组地层中,属于沉积型铝土矿床,其中地质历史时期的沉积间断对铝土矿的形成有重要作用.通过对其成矿地质背景、矿床地质特征的分析,总结了桃园向斜铝土矿的控矿因素及其找矿标志,并指出向斜的深部及西翼中部和南部具有较大的找矿潜力.