Characteristics of Lithium Isotope in the Subduction Zone
详细信息
- 责任者：Li Zhenzhen (Kunming University of Science and Technology ; Kunming 650093 ; China) ; Tian Shihong
- 刊名：Acta Petrologica et Mineralogica
- 出版年：2010
- 卷期：29(4)
- 关键词：锂同位素 ; lithium isotopes ; 俯冲带 ; subduction zones
- 页码：p.431-438
- 图表：7 illus., 44 refs.
- 分类号：0600
- issnNo：ISSN1000-6524
- isbnNo：CN11-1966/P
摘要
///Lithium has two stable isotopes, 7Li and 6Li, which have the biggest relative mass difference among all isotope pairs except for hydrogen-deuterium. Its potential for mass-dependent fractionation is thus obvious. In recent years, the studies of Li and its isotopes in the solid earth have been rapidly increasing in number, as there exists great interest in determining the usefulness of the Li isotope system in tracing crust-mantle recycling. Lithium isotopes can be strongly fractionated under different conditions, with δ7Li values ranging from +32‰ in sea water to very low in eclogites (-35‰), which are interpreted as analogs of the dehydrated oceanic crust.