地质与资源2013，Vol.22Issue(1)：36-40,5.
内蒙古孟恩陶勒盖岩体的成岩时代——LA-ICP-MS锆石U-Pb同位素年代学
PETROGENIC AGE OF MENGENTAOLEGAI INTRUSIVE BODY IN INNER MONGOLIA: LA-ICP-MS zircon U-Pb Isotopic Geochronology
摘要
Abstract
The Mengentaolegai intrusive body, emplaced in the Late Paleozoic epimetamorphic series in Xingan-Mongolia orogenic belt, is lithologically classified into medium-fine-grained tonalite, granodiorite and monzogranite, with the mineral assemblages and petrochemical characteristics of S-type granite. The LA-ICP-MS zircon U-Pb isotopic age dating results of the granodiorite and monzogranite are 234 ±1 Ma and 230 ±1 Ma, respectively, in Middle Triassic, which represents the invasion time of the Mengentaolegai intrusive body.关键词
孟恩陶勒盖岩体/LA-ICP MS锆石同位素测年/印支期构造-岩浆事件/内蒙古Key words
Mengentaolegai intrusive body/ LA-ICP-MS zircon isotope dating/ Indosinian tectonic-magmatic events/ Inner Mongolia分类
天文与地球科学引用本文复制引用
张明,付俊彧,肖剑伟,李伟..内蒙古孟恩陶勒盖岩体的成岩时代——LA-ICP-MS锆石U-Pb同位素年代学[J].地质与资源,2013,22(1):36-40,5.基金项目
中国地质调查局"内蒙古1∶5万孟恩套勒盖等五幅区域地质调查项目"(编号1212010881212)资助. （编号1212010881212）
