Advances in experiments of iron isotope fractionation at high temperature and high pressure
Iron is the most abundant metallic element in the solar system and has been pervasively involved in all processes of the formation and evolution of planets,especially in the core-mantle differentiation process of the early planets.Thus,iron isotopes can be used as reliable tracers for understanding the origin of the solar system and the evolution of planets.In the early 21st century,the introduction of Inductively coupled plasma mass spectrometry(ICP-MS)opened the door to researchers for studying high-precision iron isotopes.In this paper,we have comprehensively summarized the iron isotopic compositions of various reservoirs of celestial bodies,such as Earth,Moon and Mars,in the solar system,advances in experiments of iron isotope fractionation in the segregation process of silicate and metal at high temperature and high pressure,the progress of NRIXS measurements at ultrahigh pressure,the development of static high-pressure experiments,and the tracing researches by using the coupled multiple isotopes,in order to provide new clues for exploring the origin and evolution of planets.
iron isotopecore-mantle differentiationhigh pressure and high temperatureequilibrium fractionation
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