Center for Isotope Cosmochemistry and Geochronology
The Center for Isotope Cosmochemistry and Geochronology (CICG) led by Justin Simon is based in the Astromaterials Research and Exploration Directorate (ARES) at NASA Johnson Space Center. Our team measures a wide variety of elements and their isotopes to understand the origin of our Solar System, the processes that transformed nebular dust and gas into the building blocks of planets, and planet formation (accretion & differentiation). Investigations include the measurement of: (1) Short- and long-lived radionuclides for chronology studies, (2) Fractionation of middle mass stable isotopes to study the formation mechanisms of these planetary materials, and (3) Isotopic analyses that utilize the traditional ways that isotopic compositions can be used to study interaction among different reservoirs within the protoplanetary disk and terrestrial planets. We strive to integrate all of these isotopic measurements into a petrological context.
For more information and publications, visit our website.