澳大利亚雅克比铅锌矿区土壤地球化学特征及找矿方向  

Geochemical Characteristics of Soils and Discussion on Prospecting in the Eukaby Lead-Zinc Exploration Area, Australia

作　　者：董鹏[1,2,3] 孙传敏[1,2] 徐冠立[1,2] 刘严松 谭伟[3] 冯波 

机构地区：[1]成都理工大学地球科学学院,成都610059 [2]国土资源部构造成矿成藏重点实验室成都理工大学,成都610059 [3]成都地奥矿业能源有限公司,成都610041 [4]四川省地矿局一0六地质队,成都611130

出　　处：《高校地质学报》2015年第4期694-700,共7页Geological Journal of China Universities

基　　金：国外矿产资源风险勘查专项资金(201130B02300127)资助

摘　　要：历史上雅克比铅锌矿勘查区开展的地质勘查工作有限,可利用的资料较少,矿权区内的找矿工作未见大的突破。为了对勘查区找矿潜力达到初步认识的目的,在区内开展了1:10000土壤地球化学测量工作。依据测量结果,从数理统计学的角度,应用因子分析、相关分析和聚类分析的方法,研究矿区内成矿元素的组合;对土壤分析元素应用异常下限进行异常圈定,发现元素异常的分布受地层组中发育的节理、裂隙等构造控制。德雷里安(Delamerian)造山期及以后的构造活动可能为金属元素的活化、转移、富集、沉淀提供了储矿空间条件及热源条件,矿质可能来源于大陆风化产物及围岩。在结合前期地质工作的基础上,在土壤地球化学测区内,提出三个找矿远景区,为下一步找矿工作提供依据。Because historical geological exploration work and available research on Eukaby lead-zinc exploration are few, previousprospecting work has not made a great breakthrough. In order to obtain preliminary evaluation of prospecting potential in the explorationarea, soil geochemical surveys(a scale at 1:10000) have been carried out. According to the soil geochemical surveys in Eukaby, themethods of factor analysis, correlation analysis, and cluster analysis from mathematical statistics were applied to investigate thecharacteristics of element combination in this area. Element anomalies were delineated by threshold values of soil analysis elements.The distribution of element anomalies was found to be controlled by the well developed joints and fractures. The metallogenic materialswere derived from the continental weathering products and wall rocks. Also the Delamerian orogeny and subsequent tectonic activitiesprovided the condition of ore-bearing space and heat source for remobilization, enrichment, and precipitation of metal elements. Based on the analysis of regional geologic characteristics, three geochemically comprehensive anomalous areas were delineated in the soilgeochemical survey area, which would provide the basis for future exploration work.

关 键 词：土壤地球化学 元素异常 雅克比 澳大利亚 

分 类 号：P618.4[天文地球—矿床学] P632.1[天文地球—地质学]