| 内蒙古科尔沁右翼中旗花岗斑岩年代学研究 |
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| 引用本文： | 杨晓平,宋维民,庞雪娇,那福超,刘英才,陶楠,付俊彧,孙巍,汪岩.内蒙古科尔沁右翼中旗花岗斑岩年代学研究[J].地质与资源,2017,26(6):529-533. |
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| 作者姓名： | 杨晓平 宋维民 庞雪娇 那福超 刘英才 陶楠 付俊彧 孙巍 汪岩 |
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| 作者单位： | 1. 中国地质调查局沈阳地质调查中心, 辽宁 沈阳 1100341;2. 东北大学 资源与土木工程学院, 辽宁 沈阳 110819;3. 中国地质调查局 东部大陆边缘研究中心, 辽宁 沈阳 110034 |
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| 基金项目： | 中国地质调查局项目"太平洋构造域北段构造格局、演化历史和1：250万构造图编制"（DD20160343-09），"内蒙古1：5万前他克吐、万宝镇、保安屯、突泉县、陈家屯五幅区域地质矿产调查"（1212011220425），"大兴安岭区域地质调查片区总结与服务产品开发"（DD20160345-17） |
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| 摘 要： | 对内蒙古科尔沁右翼中旗花岗斑岩的同位素年代学研究结果表明,花岗斑岩LA-ICP-MS锆石U-Pb加权平均年龄为163.3±2.9 Ma,显示花岗斑岩体侵位于中侏罗世晚期.花岗斑岩具A型花岗岩特征,代表伸展构造岩浆活动.结合区域地质资料和前人相关研究,该区中侏罗世花岗斑岩可能形成于造山后伸展环境.花岗斑岩的期次厘定为松辽盆地的成生演化关系提供了新资料.
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| 关 键 词： | 花岗斑岩 中侏罗世 同位素年代 科尔沁右翼中旗 内蒙古 |
| 收稿时间： | 2017-03-29 |
STUDY ON THE CHRONOLOGY OF GRANITIC PORPHYRY IN HORQIN YOUYI ZHONGQI,INNER MONGOLIA |
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| YANG Xiao-ping,SONG Wei-min,PANG Xue-jiao,NA Fu-chao,LIU Ying-cai,TAO Nan,FU Jun-yu,SUN Wei,WANG Yan.STUDY ON THE CHRONOLOGY OF GRANITIC PORPHYRY IN HORQIN YOUYI ZHONGQI,INNER MONGOLIA[J].Geology and Resources,2017,26(6):529-533. |
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| Authors: | YANG Xiao-ping SONG Wei-min PANG Xue-jiao NA Fu-chao LIU Ying-cai TAO Nan FU Jun-yu SUN Wei WANG Yan |
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| Institution: | 1. Shenyang Institute of Geology and Mineral Resources, CGS, Shenyang 110034, China;2. College of Resources and Environmental Engineering, Northeastern University, Shenyang 110819, China;3. The Eastern Continental Margin Research Center, CGS, Shenyang 110034, China |
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| Abstract: | The isotopic chronological study indicates that the LA-ICP-MS zircon U-Pb weighted-average age of the granitic porphyry in Horqin Youyi Zhongqi, Inner Mongolia, is 163.3±2.9 Ma, suggesting the rock body emplaced at the late period of Middle Jurassic. Characterized by A-type granite, the granitic porphyry represents extensional tectonic magmatic activity. Combining the regional geological data and previous research, the Middle Jurassic granitic porphyry is possibly the product of post-orogenic extensional environment. The determination of its phases can provide new data for the formation and evolution of Songliao Basin. |
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| Keywords: | granitic porphyry Middle Jurassic isotopic age Horqin Youyi Zhongqi Inner Mongolia |
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