| 东天山红柳河地区晚加里东期花岗岩类岩石锆石U—Pb年龄及其地质意义 |
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| 引用本文：李伍平,王涛,李金宝,康旭,于福生,韩庆军,马忠平.2001.东天山红柳河地区晚加里东期花岗岩类岩石锆石U—Pb年龄及其地质意义[J].地球学报,22(3):231-235. |
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| 基金项目:国土资源部1∶5万《红柳河站幅》、《芦苇井幅》项目;区域地质调查项目 [甘地勘地发(1996)17号]资助 |
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| 中文摘要:本文对东天山红柳河地区 2个花岗岩类岩体进行了年代学和元素 同位素地球化学研究。锆石U Pb年龄表明 ,红柳河北闪长岩体 ( 4 41.4± 1.6Ma)和前进工区花岗岩体 ( 4 40 .9± 3 .1Ma)形成于晚加里东期。这两个花岗岩类岩体的形成不仅证实了东天山存在着晚加里东期岩浆活动 ,而且其形成与哈萨克斯坦 准噶尔大洋板块向塔里木板块俯冲密切相关。 |
| 中文关键词:锆石U-Pb年龄 板块俯冲 晚加里东期 东天山 |
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| The U-Pb Age of Zircon from Late Caledonian Granitoids in Hongliuhe Area,East Tianshan Mountains,Northwest China and Its Geological Implications |
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| Abstract:Based on the Studies of the chronology, geochemistry of elements and isotopes of two granitoid plutons in Hongliuhe area, East eastern Tianshan Mountains,Northwest China,it is inferred that Hongliuhe pluton(zircon age being 441.4±1.6Ma) and Hongliuhebei pluton(zircon age being 440.9±3.1Ma)were formed in Late Caledonian .The ages determined not only confirm the existence of Late Caledonian magmatic activities in East Tianshan Mountains ,but also demonstrate the intimate relationship between the magmatic activities and the subduction of the Kazakstan-Junggar ocean plate beneath Tarim plate. |
| keywords:U-Pb age of zircon the subduction of plate later Caledonian East Tianshan Mountains |
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