Tracing Mg-rich fluids by Mg-O isotopes at slab-mantle interface in continental subduction zones: insights from the Mg-metasomatic rocks in both western and eastern Alps - Chen, Y.-X.; Schertl, H.-P.; Demény, A.; Zheng, Y.-F.; Huang, F.; Zhou, K.; Gong, Y.-Z. (International Kimberlite Conference: Extended Abstracts, 2017)