| 东秦岭松树沟超基性岩体“热”侵位时代新知 |
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| 引用本文： | 刘军锋,孙勇.东秦岭松树沟超基性岩体“热”侵位时代新知[J].地质论评,2005,51(2):189-192. |
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| 作者姓名： | 刘军锋 孙勇 |
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| 作者单位： | 西北大学大陆动力学实验室,西安,710069;西北大学地质学系,西安,710069 |
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| 摘 要： | 松树沟超镁铁质岩体位于秦岭商-丹断裂以北,是该地区出露最大的超基性岩体,并以侵入方式与秦岭杂岩接触.该岩体主要由细粒纯橄榄岩、中粗粒纯橄榄岩和斜辉橄榄岩组成.利用LA-ICPMS锆石U-Pb法对采自该岩体北侧接触变质带的榴闪岩进行锆石定年,获得206pb/238U变质年龄为518±19 Ma.以上工作初步证实该岩体大致在0.52 Ga左右的构造热事件中侵位于秦岭杂岩中.
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| 关 键 词： | 超基性岩体 松树沟 侵位时代 东秦岭 秦岭杂岩 纯橄榄岩 接触变质带 ICPMS 构造热事件 超镁铁质 侵入方式 锆石定年 变质年龄 榴闪岩 |
New Data on the "Hot" Emplacement Age of Ultramafic Rocks from the Songshugou Area in the Eastern Qinling |
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| LIU Junfeng,SUN Yong, The Key Laboratory of Continental Dynamics,Northwest University,Xian.New Data on the "Hot" Emplacement Age of Ultramafic Rocks from the Songshugou Area in the Eastern Qinling[J].Geological Review,2005,51(2):189-192. |
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| Authors: | LIU Junfeng SUN Yong The Key Laboratory of Continental Dynamics Northwest University Xian |
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| Institution: | LIU Junfeng,SUN Yong, The Key Laboratory of Continental Dynamics,Northwest University,Xian, Department of Geology,Northwest University,Xian |
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| Abstract: | |
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| Keywords: | Songshugou ultramafic intrusion zircon U-Pb age emplacement |
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