新疆塔里木北缘色日牙克依拉克一带泥盆纪花岗质侵入体的确定及其地质意义  

Age determination and geological significance of Devonian granitic intrusions in Seriyakeyilake region,northern margin of Tarim basin,Xinjiang.

作　　者：朱志新[1,2] 李锦轶[3] 董连慧 王克卓[1] 刘国忠 李亚萍 刘振涛 

机构地区：[1]新疆大学,乌鲁木齐830000 [2]新疆地调院,乌鲁木齐830011 [3]中国地质科学院地质研究所,北京100037 [4]新疆地矿局,乌鲁木齐830011

出　　处：《岩石学报》2008年第5期971-976,共6页Acta Petrologica Sinica

基　　金：国家重点基础研究发展计划(973计划)项目(项目编号2007CB411306、2001CB409810);“十一五”国家科技支撑计划重点项目“新疆大型矿集区预测与勘查开发关键技术研究”(项目编号2006BAB07B00)项目新疆与邻区大型矿床成矿对比及勘查方向研究专题;中国地质调查局国土资源调查专项(项目编号1212010611806、1212010711817)的部分研究成果

摘　　要：位于新疆南天山色日牙克依拉克一带发育较多的中酸性侵入岩,前人均划为石炭纪侵入岩,作者对其中花岗闪长岩锆石进行 SHRIMP 定年,获得侵入岩形成年龄387±8Ma,另有一组捕获锆石的年龄为418.4±6.5Ma,通过对这些侵入岩的岩石学研究,结果显示该区泥盆纪侵入岩均具较典型活动陆缘侵入岩的特征。结合区域岩浆活动资料及前人成果,初步确定在塔里木北缘木札尔特、色日牙克依拉克、虎拉山南缘野云沟至库尔勒一带在古生代为一活动陆缘。In the Southern Tianshan, Xinjiang at the Seriyakeyilake region, there are a lot of intermediate to acidic intrusions, which had been previously classified into Carboniferous intrusions. The authors used Zircon SHRIMP U-Pb dating for three intrusions and yielded an age of 382. 1±6.2Ma, and another captured zircon yielded an age of 419.0±6. 5Ma. Meanwhile, petrology and geochemistry studies indicate that this region had the characteristics of active continental margin intrusions in Devonian. Based on the regional magmatism and previous studies, the authors proposed that the Muzhaerte-Seriyakeyilake-Hulashan area of northern margin of Tarim was an active Continental Margin in Paleozoic.

关 键 词：南天山 色日牙克依拉克 锆石SHRIMP 侵入岩 活动陆缘 

分 类 号：P588.121[天文地球—岩石学] P597.3[天文地球—地质学]