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地质通报  2007 

内蒙古中部苏尼特左旗地区三叠纪A型花岗岩锆石SHRIMPU-Pb年龄及其区域构造意义

, PP. 183-189

Keywords: A型花岗岩,锆石SHRIMPU-Pb定年,三叠纪,苏尼特左旗,内蒙古

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Abstract:

内蒙古苏尼特左旗地区A型花岗岩位于索伦山-贺根山构造带内.高精度锆石SHRIMPU-Pb测年结果显示该花岗岩的侵位年龄为222Ma±4Ma.其成因可能与中亚造山带碰撞造山后的岩石圈伸展作用有关.

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