新疆东天山中部隆起区早石炭世钙碱性花岗岩的确定  

DETERMINATION OF LOWER CARBONIFEROUS CALC-ALKALI GRANITE IN MIDDLE UPLIFT OF EAST TIANSHAN,XINJIANG

作　　者：王新昆[1,2] 彭慰兰 胡克亮 朱志新 赵同阳 王华新 

机构地区：[1]中国地质大学,北京100083 [2]新疆维吾尔自治区国土资源厅,新疆乌鲁木齐830000 [3]新疆维吾尔自治区地质调查院,新疆乌鲁木齐830011 [4]新疆维吾尔自治区地矿局第九地质大队,新疆乌鲁木齐830000

出　　处：《新疆地质》2009年第3期212-216,共5页Xinjiang Geology

基　　金：国家重点基础研究发展计划(2007CB411300);"十一五"国家科技支撑计划重点项目(2006BAB07B08-2)共同资助

摘　　要：新疆东天山中部隆起区早石炭世钙碱性花岗岩位于东天山中部喀拉塔格-旱山地块,该花岗闪长岩前人认为是前寒武纪侵入岩.通过对其锆石SHRIMP定年,获得侵入岩形成年龄(343.0±9)Ma,岩石化学具钙碱性活动陆缘的特征,区域对比研究认为是南天山洋盆洋岩石圈向北俯冲的产物.The study area is located in Kalatage-Han mountain block of middle Tianshan, the granodiorite that this paper study is regarded as Precambrian intrusive rocks by predecessors, but the authors carded out their SHRIMP zircon dating, the formation age of intrusive rocks was （343.0±9） Ma, calc-alkaline rocks with chemical characteristics of active continental margin, through the regional comparative study, think it is the production of ocean lithosphere of southern Tianshan oceanic basin northward subduction.

关 键 词：东天山 花岗闪长岩 SHRIMP 活动陆缘 

分 类 号：P588.121[天文地球—岩石学]