内蒙古科尔沁右翼中旗孟恩陶勒盖岩体年代学研究

doi:10.12068/j.issn.1005-3026.2014.06.031

东北大学学报:自然科学版 ›› 2014, Vol. 35 ›› Issue (6): 898-902.DOI: 10.12068/j.issn.1005-3026.2014.06.031

内蒙古科尔沁右翼中旗孟恩陶勒盖岩体年代学研究

宋维民¹，巩恩普¹，刘世伟²，付俊彧²

(1 东北大学资源与土木工程学院，辽宁沈阳110819； 2 沈阳地质矿产研究所，辽宁沈阳110034)

收稿日期:2013-08-28 修回日期:2013-08-28 出版日期:2014-06-15 发布日期:2014-04-11
通讯作者: 宋维民
作者简介:宋维民(1983-)，男，吉林白城人，东北大学博士研究生，沈阳地质矿产研究所工程师；巩恩普(1958-)，男，辽宁沈阳人，东北大学教授，博士生导师.
基金资助:
国家自然科学基金资助项目(41172003)；国土资源大调查项目(1212010881212；1212011220425)；中国地质调查局科技外事部项目(1212011121084).

Study on the Geochronology of Mengentaolegai Pluton in Horqin Right Wing Middle Banner，Inner Mongolia

SONG Weimin¹， GONG Enpu¹， LIU Shiwei²， FU Junyu²

1School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China； 2Shenyang Institute of Geology and Mineral Resources， Shenyang 110034， China.

Received:2013-08-28 Revised:2013-08-28 Online:2014-06-15 Published:2014-04-11
Contact: SONG Weimin
About author:-
Supported by:
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摘要/Abstract

摘要： 对内蒙古科尔沁右翼中旗地区孟恩陶勒盖岩体进行了LA-ICP-MS锆石U-Pb同位素年代学研究.结果表明，孟恩陶勒盖岩体形成年龄为(224±1)Ma，表明该岩体是在中三叠世侵位的.结合区域地质资料和前人相关研究，推测该区中三叠世花岗岩可能是古亚洲洋闭合碰撞时岩石圈挤压机制下的产物，该结果为华北板块与西伯利亚板块碰撞时限提供了新的年代学资料.

关键词: 科尔沁右翼中旗, 孟恩陶勒盖岩体, 中三叠世, LAICPMS, 年代学

Abstract: LAICPMS zircon UPb isotope geochronology was studied for Mengentaolegai pluton in Horqin Right Wing Middle Banner， Inner Mongolia. The results show that the Mengentaolegai pluton formed (224±1)Ma ago and is Triassic in age. The available previous data of regional geology and some research works infer that the Triassic granite may be the product of lithosphere compressive mechanism during the Paleoasian Ocean collided and closed. The results provide a new geochronological evidence for confirming the collisional time between the North China Plate and the Siberian Plate.

Key words: Horqin Right Wing Middle Banner, Mengentaolegai pluton, Triassic, LAICPMS, geochronology

中图分类号:

P5973

宋维民，巩恩普，刘世伟，付俊彧. 内蒙古科尔沁右翼中旗孟恩陶勒盖岩体年代学研究[J]. 东北大学学报:自然科学版, 2014, 35(6): 898-902.

SONG Weimin， GONG Enpu， LIU Shiwei， FU Junyu. Study on the Geochronology of Mengentaolegai Pluton in Horqin Right Wing Middle Banner，Inner Mongolia[J]. Journal of Northeastern University Natural Science, 2014, 35(6): 898-902.

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内蒙古科尔沁右翼中旗孟恩陶勒盖岩体年代学研究

Study on the Geochronology of Mengentaolegai Pluton in Horqin Right Wing Middle Banner，Inner Mongolia

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