新疆卡特巴阿苏金铜矿区二长花岗岩锆石SHRIMPU-Pb年龄及地质意义  

Zircon SHRIMP U-Pb Dating of the Monzonitic Granite from Kateba'asu Au-Cu Deposit and Its Geological Implications in Xin Jing

作　　者：邢令[1] 杨维忠[1] 藏梅[2] 林泽华[1] 陈威[1] 

机构地区：[1]新疆维吾尔自治区地质矿产勘查开发局第一区域地质调查大队,新疆乌鲁木齐830011 [2]新疆大学工程学院采矿工程系,新疆乌鲁木齐830023

出　　处：《新疆地质》2015年第1期1-6,共6页Xinjiang Geology

摘　　要：新疆卡特巴阿苏金铜矿床是在那拉提中天山构造带内发现的首个特大型金铜矿床,矿床赋存于二长花岗岩体的脆性断裂破碎带内。通过对二长花岗岩的锆石进行SHRIMP U-Pb测年,获得25粒锆石加权平均值为(359.3±5.3)Ma,表明该岩体侵位时间为晚泥盆世末期,同时限定了卡特巴阿苏金矿金铜矿床的形成年龄上限为(359.3±5.3)Ma。The Au-Cu deposit of Kateba＇asu Located in the nalati tectonic belt of Western Tianshan Mountains was the first discovered superlarge Au deposit in nalati tectonic belt.The ore-controlling strata is brittle fracture zone in monzonitic granite,zircon SHRIMP U-Pb dating of monzonitic granite intrusion yield apparent206Pb/238 U age of（359.3±5.3）Ma.Meanwhile,the age limits the deposit formed in the end of late Devonian.

关 键 词：新疆 西天山 卡特巴阿苏 二长花岗岩 SHRIMP U-PB年龄 

分 类 号：P618.41[天文地球—矿床学] P618.51[天文地球—地质学]