9:15 AM - 9:30 AM
[SIT23-08] The effect of iron on the elastic properties of wadsleyite at the transition zone condition
Keywords:wadsleyite, elastic properties, the transition zone
In this study, we employed ultrasonic method combined with multi-anvil apparatus and in-situ X-ray observations developed by Higo et al.  to investigate the elastic properties of wadsleyite at high temperature and pressure. The elastic bulk and shear moduli with diverse Fe concentration (Fe#=0 and 10) have been determined up to 1700K and 20 GPa. Based on our results, derivatives of seismic velocities observed among locations at the transition zone depth could be explained by Fe content variation in wadsleyite except the wedge mantle, which is consistent with the conclusion from electrical conductivities [Yoshino et al., 2009].