河池市宜州区矿山地质特征及矿床成因探讨

Discussion on the geological characteristics and genesis of the mine in Yizhou District of Hechi City

本次研究矿山位于广西壮族自治区河池市宜州区城区以南5km处,该矿产于白垩系永福群,目前已有6层矿层逐步查明,矿层产状随着地层褶皱发生改变,和围岩呈现一致产状特征,通过研究发现,该区的成矿物质来源和分布于矿区东南侧区域上的3处燕山期,因地质构造变化而产生的富含玻屑的凝灰质有着密切的联系;同时受多期次的宜山大断裂活动影响,造成白垩系红层盆地出现不断下降,提供了容矿场所。六坡含矿盆地在东西方向上有约30km长,此次研究主要局限于盆地的西侧区域。本文结合实践对河池市宜州区矿山地质特征及成因进行探讨,对该区找矿工作具有重要的指导作用。

The mine in this study is located 5km south of the urban area of Yizhou District,Hechi City,Guangxi Zhuang Autonomous Region.The mine is located in the Yongfu group of Cretaceous system.At present,six ore beds have been identified step by step.The occurrence of the ore bed changes with the formation fold,showing the same occurrence characteristics with the surrounding rock.Through research,it is found that the source of ore-forming materials in this area and three Yanshanian periods distributed in the southeast area of the mining area due to geological reasons There is a close relationship between the glassy tuffaceous produced by the structural change and the red bed basin of Cretaceous system,which is influenced by the activities of Yishan fault in many stages,has been declining,providing a place for ore storage.Liupo ore bearing basin is about 30km long in the east-west direction.This study is mainly limited to the west of the basin.Based on the practice,this paper discusses the geological characteristics and genesis of the mine in Yizhou District of Hechi City,which plays an important role in guiding the prospecting work in this area.