Petrogenic Age of Mengentaolegai Intrusive Body in Inner Mongolia: LA-ICP-MS Zircon U-Pb Isotopic Geochronology
详细信息
- 责任者：Zhang Ming (Inner Mongolia Institute of Geological Survey ; Hohhot 010020 ; China) ; Fu Junyu
- 刊名：Geology and Resources
- 出版年：2013
- 卷期：22(1)
- 关键词：英云闪长岩 ; tonalite ; 花岗闪长岩 ; granodiorites ; 二长花岗岩 ; monzogranite ; 铀—铅计时 ; U-Pb dating ; 内蒙古 ; Inner Mongolia
- 页码：p.36-40
- 图表：illus., 2 tables, 3 refs.
- 分类号：0801
- issnNo：ISSN1671-1947
- isbnNo：CN21-1458/P
摘要
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.
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