四川省峨边县杨河铅锌矿床地质特征分析及成因探讨

摘要

四川省峨边县杨河铅锌矿床位于扬子地台西缘，康滇地轴东部边缘与龙门山断裂带交汇地区，属于四川峨边-马边成矿带。通过对该矿区地质概况、矿床特征、主要控矿因素等进行综合分析，认为矿体主要赋存于寒武系下统麦地坪组白云岩之中，受层位控制。通过对矿床成因的探讨，认为该矿床经历了沉积期富集，成岩期成矿，后期地壳运动热液侵入使其改造三个阶段。%The Mississippi Valley - type lead - zinc deposit at Yanghe, E’ bian county, Sichuan province is distributed in the intersection of the east edge of Yangtze Platform, the east edge of Kangdian Axis and Longmenshan Fault zone. It belongs to the E'bian - Mabian Metallogenic Belt. Through a comprehensive analysis of the mining geology, deposit characteristics, metallo_genic geological conditions and the main ore - controlling factors, the main ore body is considered in dolomite of the Maidiping For_mation of lower Cambrian, which is mainly controlled by layers. Through the discussion of genesis, mineralizing materials of the deposit are considered having been experienced three stages of transformation, which were deposition of enrichment, diagenetic mineralization and hydrothermal intrusion in late crustal move_ment.