甘肃阳山金矿成矿作用中的古水文地质条件分析  

Analysis on Paleohydrogeological Conditions of Mineralization in Yangshan Gold Mine,Gansu Province

作　　者：李石桥[1] 郭俊华[2] 余金元 沈睿文[1] 孙彬[2] 

机构地区：[1]武警黄金第十二支队,四川成都610036 [2]武警黄金第三总队,四川成都610036

出　　处：《黄金科学技术》2014年第6期12-17,共6页Gold Science and Technology

摘　　要：从古水文地质条件方面入手,通过分析矿区区域构造演化和古水文地质条件对成矿的影响以及矿床的古水文地球化学特征,逐步阐明了矿体的控矿因素以及矿带中心位置的形成原因,对矿床的成因有了进一步的认识,认为在泥盆纪本区形成了一套碳、硅、泥质热水沉积,在地下水的参与作用下,印支期区域浅变质过程中不同阶段成矿流体中的金初步富集,与之相关的成矿热液及成矿物质沿安昌河—观音坝断裂运移,并在有利的构造部位富集、叠加形成了阳山金矿。This paper analyzed the effects of regional tectonic evolution and the paleohydrogeological conditions on mineralization and the paleohydrologygeochemistry characteristics of the deposits based on the paleohydrogeological conditions.It set forth ore-controlling factors of the deposits and the reasons for the formation of ore belts center step by step.There has been a further understanding of the genetic of the deposits. During the Devonian period,a set of carbonaceous,siliceous and argillaceous hot-water sedimentations was formed in this area.In the course of regional shallow metamorphism during Indo-Chinese epoch,the gold from the ore-forming fluid was enriched preliminarily in the different stages with the participation of underground water, and the related metallogenic hydrotherm and ore-forming materials migrated along the Anchanghe-Guanyinba fault,then gathered in the favorable structural positions and resulted in superposition Yangshan gold deposits.

关 键 词：古水文地质条件 构造演化 控矿因素 热液成矿 阳山金矿 

分 类 号：P618.51[天文地球—矿床学]