综合物化探方法在滇南劭腊南坡铜矿找矿勘查中的应用摘要：文章结合区域成矿地质背景，以砌腊县南坡铜矿床地质勘查成果资料为依据，通过对矿床铜矿石进行主量元素、微量元素、稀土元素及土壤地球化学特征进行测定，并对矿区矿/岩石地球物理特征及激电中梯进行分析，结合矿区成矿地质条件及矿床地质特征，发现：①矿石与围岩主量元素基本一致，微量元素（除Ba、Zr>Hf）则于矿体中呈现不同程度富集,稀土元素表现为负Eu异常-§Ce无明显异常-轻稀土富集型，均表明成矿物质主耍源口围岩地层，外来热液流体改造作用微弱，与矿化/体严格受地层控制的地质事实吻合；②土壤地球化学元素中，Ag、As、Pb相对富集，Ag与Cu套合性最高，与矿床成因关系密切；③硫化铜矿石显示高极化、中电阻率特征，与围岩低极化率特征差异显著；④根据物化探异常的分布位置及展布形态，结合矿区地质实际，确定综1异常及综2异常具有较好的找矿潜力，圈定矿区北延为找矿前景区。Abstract：Thispaperdiscussedthecharacteristicsofmajorelement,traceelement,rareearthelementsandgeochemicalcharacteristicsofsoilsthroughthesummaryoftheregionalgeologicalbackgroundandgeologicalexplorationresults・Inaddition,theauthoridentifiodthegeophysicalcharacteristics---本文来源于网络，仅供参考，勿照抄，如有侵权请联系删除---ofore/rockandinduced-currentmiddle-gradient.Combinedwiththeresearchofore-forminggeologicalconditionsandgeologicalcharacteristicsofdeposit,theresuItsshowedthat：①Themajorelementsoforeandsurroundingrockwerebasicallyidentical,butthevalueoftraceelements(excepttheBa,ZrandIlf)withdifferentdegrees・Inaddition,therareearthelementswascharacterizedwithElianomaly,whilethe8Cohaslessobviousanomaly-LREErichtype.Thesegeochemicalfeaturesindicatedthattheoreformingmaterialsourcewasmainlyadjacentrocksstratum,whichhastheweaktransformationeffectofhydrothermalfluid.Thisphenomenonshowedtheconsistencyofthegeologicalconditionthatthemineralization/orebodyhavebeencontrolledbystratum.②Thestudyofsoi1geochemicalshowedtheenrichmentofsilver,arsenicandlead・Thesilverandcopperhavethebestregistrationwhichexhibitedacloselyrelationshipforthegenesisofdeposit.③Thecoppersulphideorehascharacterizedwiththehighpolarizabilityandmiddleresistivitywhichisobviouslydifferentfromtheresistivityfeatureofsurroundingrock.④Theexplorationprospectregionwasproposedaccorditothedistributionlocationandthespatialformofgeophysicalandgeochemicalanomaly,geologicalsituationofminingarea・TheauthorholdsthattheNo.1comprehensiveanomalyandNo.2comprehensivcanomalyhavethebetterprospectingpotential.关键词：铜矿；地球化学；激电中梯；南坡；滇南Keywords:copperdeposit；geochemical；induced-currentmiddle-gradient；Nanpo；SouthernYunnan中图分类号：P616.3文献标识码：A文章编号：1006-4311(2017)01-0105-040引言南坡铜矿位于滇南西双版纳州劭腊县的东南部，东南与老挝接壤，而西南则以澜沧江为界与缅甸毗邻，地处特提斯与环太平洋两大巨型构造域的结合带［1,2］。受印度板块、太平洋板块及欧亚板块相互作用的影响，区域出露地层齐全，褶皱构造及断裂构造发育且多具有继承性和多期性，其深/---本文来源于网络，仅供参考，勿照抄，如有侵权请联系删除---大断裂严格控制着全区构造格局，是铜、铁、铅锌等矿产的有利成矿地段。此外，区内中、新生代岩浆活动强烈，为区内铜矿化的继承性成矿提供了部分成矿物质，南坡矿床既是位于兰坪-思茅盆地南部的典型砂岩型铜矿之一［3］o针对南坡矿床的研究工作很少，目前对其成因的说法可总结为以下几种：吕晓宏认为南坡铜矿石是在沉积铜矿的基础上由地下水作用的富矿作用形成的，属沉积-改造-叠加型矿床［4］；范昆琨则将矿床成矿划分为风化沉积、成岩成矿及改...