Chemical structure of the Earth's mantle defined by fast diffusion elements like helium

作者：Yun Liu

摘要：A theoretical model and numerical simulation(i.e.,Zhu et al.2019)demonstrates that the Earth’s lower mantle was intrinsically stratified for helium(He)by thermal diffusion owing to adiabatic temperature gradient in the Earth.This finding helps to explain the two longstanding problems:the helium concentration paradox and the heathelium paradox.

发文机构：State Key Laboratory of Ore Deposit Geochemistry CAS Center for Excellence in Comparative Planetology

关键词：DIFFUSIONELEMENTSstructure

分类号： TG1[金属学及工艺—金属学]