Oib-Type Basalt and E-Morb-Type Basalt Exist in the Gangtangcuo Area, Central Qiangtang, Tibet , China
详细信息
- 责任者：Lu Qingwei (China University of Geoscinces ; Beijing 100083 ; China) ; Wang Genhou
- 刊名：Xinjiang Geology
- 出版年：2011
- 卷期：29(3)
- 关键词：玄武岩 ; basalts ; 西藏 ; Tibet
- 页码：p.332-336
- 图表：illus., 2 tables, 15 refs.
- 分类号：0801
- issnNo：ISSN1000-8845
- isbnNo：CN65-1092/P
摘要
By means of studying the geochemistry of basalt in the Gangtangcuo area, central Qiangtang, Tibet, the authors found that there are two types of basalt: OIB-type basalt and E-MORB-type basalt. And based on geochemical diagram analysis to study major elements, rare earth elements, trace element and tectonic significance of the two types basalt, combined with regional geological background, the authors think Permian basalt in the area formed in an oceanic island environment, and may be subject to mantle plume magmatism response. E-MORB-type basalt was an indication that there may be oceanic plateaus in the area.