大比例尺土壤地球化学测量在地质条件复杂地区多金属找矿中的应用  

Application of large scale soil geochemical survey in polymetallic ore prospecting in areas with complex geological conditions

作　　者：聂林强 NIE Lin-qiang(The Third Exploration Team of Shandong Coalfield Geologic Bureau,Taian 271000,China)

机构地区：[1]山东省煤田地质局第三勘探队,山东泰安271000

出　　处：《世界有色金属》2021年第11期35-37,共3页World Nonferrous Metals

摘　　要：勘查区临近沂沭断裂,区内断裂构造及其次级羽状裂隙广泛分布,且中生代与金及多金属矿化关系密切脉岩较为发育。勘查区内多为低山丘陵区,残、坡积物广泛覆盖,基岩出露相对较少。因此,仅采用地质填图、地球物理等传统找矿方法效果相对较差。本文通过在勘查区内开展大面积1:1万土壤地球化学测量,运用异常组合和元素富集规律等分析方法,发现区内与成矿有关的Au、Cu等元素异常发育,圈定了6处综合异常,通过对区内异常进行查证,圈定多处铜、金等矿体。本次研究结果表明大比例尺土壤地球化学测量在该类地质条件复杂地区具备较高的实用性及较好的找矿效果。The exploration area is close to the Yishu fault,and the fault structures and secondary pinnate fissures are widely distributed in the area.The Mesozoic dike rocks are closely related to gold and polymetallic mineralization.Most of the exploration area is low hilly area,with extensive coverage of residual and slope deposits,and few outcrop pairs of bedrock.Therefore,the traditional prospecting methods such as geological mapping and geophysics are relatively ineffective.In this paper,a large-scale 1:10000 soil geochemical survey was carried out in the exploration area,and analysis methods such as abnormal combination and element enrichment regularity were used to find the abnormal development of Au,Cu and other elements related to mineralization in the area.Six comprehensive anomalies were delineated,and several copper and gold orebodies were delineated through verification of the anomalies in the area.The results of this study show that large scale soil geochemical survey has higher practicability and better prospecting effect in such areas with complex geological conditions.

关 键 词：多金属找矿 地质条件复杂地区 大比例尺土壤地球化学测量 应用 

分 类 号：P612[天文地球—矿床学]