About the Author
Simon P. Turner obtained his PhD at the University of Adelaide in 1991. Currently he holds an ARC Professorial Fellowship in the Department of Earth and Planetary Sciences at Macquarie University, Sydney, Australia where he specializes in the application of U-series isotopes to constraining the time scales of Earth processes with particular emphasis on subduction zone magmatism.
James A. Van Orman is an Associate Professor in Geological Sciences at Case Western Reserve University. He was awarded a PhD in geochemistry at MIT and undertook postdoctoral research in mineral physics and geochemistry at the Carnegie Institution of Washington. His research is centered on diffusion in minerals and melts, with current interests in deep planetary rheology, chemical exchange processes, and geochronology.