Kei Shimizu

Position title: Research Associate


A360 Weeks Hall
1215 W. Dayton St

Research Website
Kei Shimizu Website


I am a Geochemist /Cosmochemist who has a broad interest in the chemical evolution of the Solar System and planets. My primary research focus has been on the following topics.

  • Mantle and crustal geochemistry
  • Origin and evolution of life-essential volatiles in the Solar System and Earth
  • Petrogenesis of oceanic and arc magmas/cumulates ​
  • Partitioning of trace elements between minerals and silicate melt

More specifically, I study various terrestrial and meteoritic materials using microanalytical techniques such as secondary ionization mass spectrometry (SIMS), to analyze their chemical composition such as the volatile contents (C, H, F, Cl, and S) as well as major and trace element concentrations. I have applied these techniques to understand specific research topics such as those listed below.

Research Projects

  • Volatiles in melt inclusions in Archean volcanic zircons
  • CO2 and H2O content in Earth’s mantle and the mantle flux
  • Volatile contents in Early Earth magmas
  • Chondrule formation and meteorite alteration process
  • Petrogenesis of mid-ocean ridge basalts, arc magmas, and cumulates
  • Collaborative study on Andean arc crustal structure combining seismic and geochemical observations ​
  • Partitioning of trace elements between amphibole and silicate melt


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