Nominally anhydrous minerals in the Earth’s mantle, such as olivine, pyroxene and garnet, can incorporate considerable amounts of water. Even very small amounts of water in mantle minerals can strongly affect a range of physical properties such as density, sound velocity, melting temperature and electrical conductivity. This can lead to large scale changes in the structure and dynamics of the Earth’s upper and lower mantle. In this session we will explore the effect of water on the physical properties of mantle minerals, mechanisms for incorporating water in nominally anhydrous minerals and methods for determining the amount and type of water in a mineral.
Associate Professor Simon Clark (Australia)
- Andrew Berry