西天山特克斯达坂花岗岩基的解体及钼找矿意义  

DISINTEGRATION OF TEKESI DABAN GRANITIC BATHOLITH AND ITS SIGNIFICANCE FOR MO PROSPECTING,WESTERN TIANSHAN MOUNTAINS

作　　者：李永军[1] 庞振甲[1] 栾新东 杨俊泉[1] 王小刚 张文峰[1] 司国辉[1] 

机构地区：[1]长安大学地球科学与资源学院,陕西西安710054 [2]新疆地矿局第九地质大队,新疆乌鲁木齐830000

出　　处：《大地构造与成矿学》2007年第4期435-440,共6页Geotectonica et Metallogenia

基　　金：国家自然科学基金资助项目(40534020);新疆巩留特克斯达坂一带1:5万区域地质矿产调查项目(XJQDZ2004-12)

摘　　要：通过详细的岩石学特征、接触关系、地质时代以及含矿性等研究，特克斯达坂岩基可解体为早石炭世库勒萨依序列和早二叠世其那尔萨依序列，其同位素年龄分别为347Ma和291～292Ma，地质调查已证实，两序列间为侵入接触关系。并于解体出的库勒萨依两序中新发现了斑岩型钼矿体。特克斯达坂岩基的解体，客观反映了岩浆活动的特征，不仅为深化区域成矿规律和指导进一步找矿具有重要意义，而且为丰富构造岩石组合资料和探讨本区大地构造演化有重要理论价值。Detailed field investigations on petrology, contact relationship, emplacement ages and ore-forming potential of granitic intrusion show that the Tekesi Daban batholith could be disintergrated into two intrusive series： one is Kulesayi series （ca. 347Ma, early Carboniferous） and the other is Qinaersayi series （291 -292Ma, early Permi- an）, respectively. Field investigation and exploration indicate that there exist intrusive contact relationship between the Kulesayi and Qinaersayi series, and a new porphyry molybdenum deposit was discovered in the Kulesayi series. The disintergration of the Tekesi Daban batholith provides important constraints on the magmatic evolution of the Paleozoic granitic magmas and the related ore formation.

关 键 词：特克斯达坂岩基 岩石学特征 接触关系 解体 找矿意义 西天山 

分 类 号：P583[天文地球—岩石学] P618.65[天文地球—地质学]