Читать книгу Isotopic Constraints on Earth System Processes - Группа авторов - Страница 32

The question addressed in this section is whether the measurably large kinetic isotopic fractionations that were found in silicate melts also arise during diffusion in igneous minerals. Many of the laboratory experiments and natural examples focused on lithium because of its special attributes of large isotopic mass ratio and extremely fast diffusion, which makes it a potentially unique constraint on thermal histories on geologically very short time scales. Experiments and field examples of isotope fractionation during Fe‐Mg interdiffusion in olivine are also discussed.