地质通报2016，Vol.35Issue(9)：1517-1521,5.
内蒙古大青山地区英安岩LA-ICP-MS锆石U-Pb年龄及其构造意义
LA-ICP-MS zircon U-Pb ages of quartz-andesite in Daqingshan area, Inner Mongolia and its tectonic significance
摘要
Abstract
Weighted average zircon 207Pb/206Pb age of 1870±19Ma was obtained from the quartz-andesite cut by the thrusting struc⁃ture in Daqingshan area, Inner Mongolia. The quartz-andesite is the product of a breakup event between multi-stage rifting in the late Paleoproterozoic to Neoproterozoic period in North China. At the same time, according to the 206Pb/238U age of 436±4Ma from the concordant zircon (No. 06) of the basalt-andesite and the 206Pb/238U ages of 153±2Ma and 160±2Ma from the concordant zircons (No. 15 and 29) of the quartz-andesite, the structural revival and structural tracing phenomena exist in the thrusting tectonics in Daq⁃ingshan area. The results obtained by the authors have accumulated new information and provided new theoretical thinking for the study of thrusting tectonics in Daqingshan area.关键词
LA-ICP-MS锆石U-Pb年龄/逆冲推覆构造/构造复活/构造追踪/大青山地区Key words
LA-ICP-MS zircon U-Pb age/thrusting tectonics/revived structures/structural tracing/Daqingshan area分类
天文与地球科学引用本文复制引用
郭俊,马富财,杨文,成林强,李鹏,郭雪峰..内蒙古大青山地区英安岩LA-ICP-MS锆石U-Pb年龄及其构造意义[J].地质通报,2016,35(9):1517-1521,5.基金项目
内蒙古自治区地质勘查基金管理中心项目 （）
