Geochemistry and Tectonic Setting of Permian Volcanic Rocks in Yingen-Ejin Banner Basin and Its Neighboring Areas, Western Inner Mongolia
详细信息
- 责任者：Dang Ben (College of Earth Sciences and Resources ; Chang’an University ; Xi’an 710054 ; China) ; Zhao Hong
- 刊名：Geological Bulletin of China
- 出版年：2011
- 卷期：30(6)
- 关键词：火山岩 ; volcanic rocks ; 岩石地球化学 ; lithogeochemistry ; 构造环境 ; tectonic setting ; 内蒙古 ; Inner Mongolia
- 页码：p.923-931
- 图表：5 illus., 1 table, 31 refs.
- 分类号：0801
- issnNo：ISSN1671-2552
- isbnNo：CN11-4648/P
摘要
Based on a petrologic and geochemical analysis of Permian volcanic rocks in the study area, this paper attempts to clarify the palaeo-tectonic setting and provides independent evidence for understanding the nature of the basin. The data show not only the characteristics of an intraplate setting on the whole but also the signature of a subduction zone. Combined with the sedimentary formation characteristics, the authors have reached the conclusion that the Permian magmatic activity of the study area was generated in an intraplate setting, with variable degrees of contamination of the crust during magmatic ascending, related probably to the mantle plume event.