Costanza Bonadiman, Carsten Munker, Helen Williams, Marguerite Godard, Othmar Müntener and Alberto Zanetti (contact:

Geochemical differentiation processes have defined both the chemical composition and physical properties of the Earth’s interior from accretion to the present day. Processes such as melt extraction and the tectonic recycling of surface material and the mixing and long-term preservation of chemical heterogeneities require a fundamental understanding of the chemical and physical properties of mantle components and how these have changed over time. We encourage geochemists, petrologists, geophysics and mineralogists to contribute to this session to build a dynamical understanding of the secular variations in mantle chemistry, mineralogy and physical properties.