Actualities and Problems of ⁴⁰Ar/³⁹Ar Thermochronology

• 责任者：Wu Lin (State Key Laboratory of Lithospheric Evolution ; Institute of Geology and Geophysics ; Chinese Academy of  Science ; Beijing 100029 ; China) ; Yang Liekun
• 刊名：Chinese Journal of Geology
• 出版年：2010
• 卷期：45(3)
• 关键词：39 ; Ar-40／Ar-39 ; thermochronology ; Ar-Ar dating
• 页码：p.905-916
• 图表：3 illus., 36 refs.
• 分类号：1300
• issnNo：ISSN0563-5020
• isbnNo：CN11-1937/P

⁴⁰Ar/³⁹Ar thermochronology has been one of the most powerful tools for researching thermal history of geological body owing to the fact that， for Ar isotopic system,  closure temperatures of minerals for dating spread a wide range and that non-linear cooling history between 650 ℃ and 150 ℃ could be obtained. However, some problems with respect to the mechanisms for argon diffusion in these minerals have not been completely understood which restricts the development of ⁴⁰Ar/³⁹Ar thermochronology to a certain extent. Two most widely used models, multiple diffusion domain models and multipath diffusion model will be introduced here, including their actualities, problems and possible solution, and the trend of ⁴⁰ Ar/³⁹Ar thermochronology.