内蒙古白音高勒地区石炭纪石英闪长岩SHRIMP锆石U-Pb年代学及其意义

• 基础地质·矿床·盆地 • 上一篇下一篇

内蒙古白音高勒地区石炭纪石英闪长岩SHRIMP锆石U-Pb年代学及其意义

鲍庆中¹,张长捷¹,吴之理²,王宏¹,李伟¹,桑家和²,刘永生²

1.中国地质调查局沈阳地质矿产研究所，沈阳 110032;2.内蒙古地质矿产勘查院，呼和浩特 010010

收稿日期:2006-05-14 修回日期:1900-01-01 出版日期:2007-01-26 发布日期:2007-01-26
通讯作者: 鲍庆中

SHRIMP U-Pb Zircon Geochronology of a Carboniferous Quartz-Diorite in Baiyingaole Area, Inner Mongolia and Its Implications

BAO Qing-zhong¹,ZHANG Chang-jie¹,WU Zhi-li²,WANG Hong¹,LI Wei¹,SANG Jia-he²,LIU Yong-sheng²

1.Shenyang Institute of Geology and Mineral Resources，China Geological Survey，Shenyang 110032,China;2.Inner Mongolia Exploration Institute of Geology and Mineral Resources, Hohhot 010010,China

Received:2006-05-14 Revised:1900-01-01 Online:2007-01-26 Published:2007-01-26
Contact: BAO Qing-zhong

摘要/Abstract

摘要： 内蒙古东南部古生代造山带在石炭纪时期的构造环境和构造演化，至今在认识上存在较大的分歧。锡林郭勒杂岩是该带内出露面积较大的前石炭纪强变形地质体，在这套杂岩两侧大面积分布石炭-二叠纪海相碎屑岩-碳酸盐岩建造，杂岩中及其两侧发现了大量的中酸性侵入岩体或岩墙与其紧密伴生。侵入岩岩性主要为石英闪长岩和英云闪长岩。对其中的石英闪长岩进行了岩相分析和SHRIMP锆石U-Pb年代学测定，所得年龄为(313±5～323±4) Ma，属于晚石炭世侵入体。结合区域地质演化特征分析，其应形成于张性构造环境。

关键词: 白音高勒地区, 石炭纪, 石英闪长岩, SHRIMP锆石U-Pb年龄

Abstract: There are great bifurcations as yet on the structural environment and on the evolution of the Xingmeng Paleozoic orogenic belt in Southeast Inner Mongolia during the Carboniferous Period. Large number of intermediateacidic intrusions or dykes were found in the Xilin Gol complex and its margin. The intrusive rocks trend NE-NEE, are closely related to the Xinlin Gol complex in space and are mainly quartz-diorite and quartz-biotite-diorite. Quartz-diorite was selected and tested to be (313±5) Ma to (323±4) Ma, falling into the range of later Carboniferous Period. This age affirmance is of great significance for studying the geological evolvement in Carboniferous-Permian period in Xingmeng Paleozoic orogenic belt.

Key words: Baiyingaole area, Carboniferous Period, quartz-diorite, SHRIMP U-Pb age of zircon

中图分类号:

P597.3

鲍庆中,张长捷,吴之理,王宏,李伟,桑家和,刘永生. 内蒙古白音高勒地区石炭纪石英闪长岩SHRIMP锆石U-Pb年代学及其意义[J]. J4, 2007, 37(1): 15-0023.

BAO Qing-zhong,ZHANG Chang-jie,WU Zhi-li,WANG Hong,LI Wei,SANG Jia-he,LIU Yong-sheng. SHRIMP U-Pb Zircon Geochronology of a Carboniferous Quartz-Diorite in Baiyingaole Area, Inner Mongolia and Its Implications[J]. J4, 2007, 37(1): 15-0023.

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