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1、2016年9月，第22卷，第3期，459-466页高校地质学报Sep2016，Vol.22，No.3，pp.459-466GeologicalJournalofChinaUniversitiesDOI:10.16108/j.issn1006-7493.2015221江西灵山杂岩体地质特征及成因探讨吴旭铃，凡秀君，龚咤云，肖兴，滑鑫，方俊华江西省地质调查研究院，南昌330030摘要：江西灵山花岗岩体位于钦杭结合带南带之怀玉拗陷，呈环形岩基状产出；SiO2含量69.16%~76.45%，K2O+Na2O为6.4
2、1%~9.44%，属酸性—超酸性、高钾钙碱性—钾玄岩系岩石，里特曼指数平均为2.42；富集Rb、Th、U、Nd、Hf、Zr、Y、Nb、Ta等元素，亏损Ba、Sr、P、Ti等元素；稀土元素总量为79.08×10-6~629.88×10-6，La/Yb比值为4.66~20.86，δEu=0.11~0.45，显示出强烈的Eu负异常。作者在《江西省灵山地区矿产地质调查》工作中收集到杂岩体各侵入体之间的侵入接触构造，研究发现岩体受北东和北西向断裂交汇点控制，认为属陆内局部伸展环境下具有两次以上由南西向北东上侵呈非对称
3、的气球膨胀式定位的“A”型、混熔型花岗岩，成岩成矿时代均为早白垩世；葛源至樟村是寻找与灵山岩体相类似的矿床有利地段。关键词：江西灵山；杂岩体；成矿地质特征；成因机制中图分类号：P588.12文献标识码：A文章编号：1006-7493（2016）03-0459-08GeologicalCharacteristicsandGenesisoftheLingshanComplexinJiangxiProvinceWUXuling，FANXiujun，GONGChayun，XIAOXing，HUAXin，FANGJu
4、nhuaGeologicalSurveyofJiangxiProvince,Nanchang330030,ChinaAbstract:TheLingshangraniticplutonislocatedatHuaiyudepressioninthesouthernbeltofQinhangjunction,JiangxiProvince.Itoccursasamultistagebatholithinacircleshape.Thewhole-rockSiO2contentsoftheLinshangran
5、iterangefrom69.16wt.%to76.45wt.%,andthecontentsofK2O+Na2Orangefrom6.41wt.%to9.44wt.%.Theyareacidtoultra-acid,andbelongtothehighKcalc-alkalinetoshoshoniteseries.TheRittmannIndexisinanaverageof2.42.TheyareenrichedinRb,Th,U,Nd,Hf,Zr,Y,NbandTa,butdepletedinBa,
6、Sr,PandTi.ThetotalREEcontentsareintherangeof79.08×10-6～629.88×10-6.TheratiosofLa/Ybareintherangeof4.66~20.86,whiletheδEuvaluesrangefrom0.11to0.45,withstrongnegativeEuanomalies.Theauthorsanalyzedtheintrusivecontactrelationshipbetweenthedifferentunitsoftheco
7、mplexafter“MineralresourcesgeologicalsurveyforLingshanareainJiangxiprovince”.Thedatashowthatthecomplexplutonwascontrolledbythenortheasttonorthwestfractureintersection.ThelocallyintracontinentalextensionenvironmentinducedtheA-typegraniticmeltsascendingandem
8、placementfromsouthwesttonortheastasasymmetricinflatableballoons.Theirrock-andore-formingagesarearoundearlyCretaceous.Geyuan-ZhangcunisapotentialareatofindoredepositssimilartothoseassociatedwiththeLingshangran
