摘要
Understanding the behaviour of Ar diffusion in potassium-containing minerals is a basic aspect of geochronology. At first the studies were mainly concentrated on the temperature effect of Ar diffusion. Afterwards, Foland did single face orthoclase experiment of Ar diffusion, using isotropic sphere model at 500°— 800℃ and 1—5 kbar, and calculated the diffusion coefficient. Giletti et al. treated Ar diffusion on phlogpite in vacuum and hydrothermal conditions at 600°—1080℃ and 1—5 kbar. They did not try more higher pressure, and con-
基金
Project supported by the National Natural Science Foundation of China.
