澳大利亚雅克比铅锌矿区土壤地球化学特征及找矿方向

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。
BecausehistoricalgeologicalexplorationworkandavailableresearchonEukabylead-zincexplorationarefew,previous prospectingworkhasnotmadeagreatbreakthrough.Inordertoobtainpreliminaryevaluationofprospectingpotentialintheexploration area,soilgeochemicalsurveys(ascaleat1:10000)havebeencarriedout.AccordingtothesoilgeochemicalsurveysinEukaby,the methods of factor analysis, correlation analysis, and cluster analysis from mathematical statistics were applied to investigate the characteristicsofelementcombinationinthisarea.Elementanomaliesweredelineatedbythresholdvaluesofsoilanalysiselements. Thedistributionofelementanomalieswasfoundtobecontrolledbythewelldevelopedjointsandfractures.Themetallogenicmaterials werederivedfromthecontinentalweatheringproductsandwallrocks.AlsotheDelamerianorogenyandsubsequenttectonicactivities providedtheconditionofore-bearingspaceandheatsourceforremobilization,enrichment,andprecipitationofmetalelements.Basedontheanalysisofregionalgeologiccharacteristics,threegeochemicallycomprehensiveanomalousareasweredelineatedinthesoil geochemicalsurveyarea,whichwouldprovidethebasisforfutureexplorationwork.