Enriched Mantle Source and Petrogenesis of Miocene Sailipu Ultrapotassic Rocks in Western Lhasa Block, Tibetan Plateau: Lithium Isotopic Constraints
详细信息
- 责任者：Tian Shihong (School of Earth Science and Mineral Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Hu Wenjie
- 刊名：Mineral Deposits
- 出版年：2012
- 卷期：31(4)
- 关键词：火山岩 ; volcanic rocks ; 地幔源 ; mantle source ; 锂同位素 ; lithium isotopes ; 西藏 ; Tibet
- 页码：p.791-812
- 图表：11 illus., 1 table, 130 refs.
- 分类号：0801
- issnNo：ISSN0258-7106
- isbnNo：CN11-1965/P
摘要
In this paper, the authors applied lithium isotope to the typical study of Sailipu ultrapotassic rocks in the southwestern Tibetan Plateau. Based on calculation modeling and a comparison with previous similar results, the authors hold that the most probable metasomatic agents were melts or fluids derived from subducted Indian crust instead of from Tethyan crust (including sediments). Therefore, the authors put forward a petrogenetic model of ultrapotassic rocks.