1∶2.5万水系沉积物测量在矿产预普查中应用——以金寨县莲花地区为例  

APPLICATION OF 1∶25000 STREAM SEDIMENT SURVEY IN PRE-SURVEY——TAKING THE LIANHUA AREA OF JINZHAI COUNTY AS EXAMPLE

作　　者：苏晓静[1] 方明[1] 胡飞平 王波华[1] SU Xiao-jing;FANG Ming;HU Fei-ping;WANG Bo-hua(No.313 Unit of Bureau of Geology and Mineral Exploration of Anhui Province, Lu’an, Anhui 237010,China)

机构地区：[1]安徽省地质矿产勘查局313地质队,安徽六安237010

出　　处：《安徽地质》2018年第3期219-223,共5页Geology of Anhui

摘　　要：大比例尺水系沉积物地球化学找矿具有见效快,成本低的特点,在矿产预普查中应用非常广泛。本文结合评价区内的地质背景,分析了1:2.5万水系沉积物地球化学参数特征及其元素的相关性,认为相关元素地球化学异常(高值区)严格受晓天-磨子潭断裂带、近南北向和北西向断裂,以及燕山期的岩浆热液活动、脉岩、寒武系-下古生纪地层等因素联合控制。根据异常特征与成矿地质条件,筛选出有利成矿地段,开展野外矿点检查和异常查证,在工区内圈定了9处找矿远景区,为该区下一步的找矿工作提供了依据。Large-scale stream sediment geochemical survey is characterized by quick result and low cost,which is widely used in pre-survey of mineral resources.Considering geological setting of the study area,this paper analyzes the features of1∶250000stream sediment geochemical parameters and their correlation with elements,concludes that geochemical anomalies(high value areas)of relevant elements are strictly and jointly controlled by the factors such as the Xiatian-Mozitan Fault zone,nearly north-south,northwest-trending fractures,Yanshanian magmatic hydrothermal activities,dyke rocks,and Cambrian-lower Palaeozoic strata,and according to the features of anomalies and ore-forming geological conditions,singles out favorable ore-forming areas for field inspection of the ore occurrences and for anomaly verification,delineates9prospective areas in the work area,providing a basis for further mineral exploration in the area.

关 键 词：水系沉积物测量 地球化学特征 聚类分析 因子分析 金寨莲花 

分 类 号：P632[天文地球—地质矿产勘探]