1. Geological and Environmental Sciences; Stanford University; Stanford California USA
2. Department of Geological Sciences; Stockholm University; Stockholm Sweden
3. Department of Geology; Lund University; Lund Sweden
4. Stanford Synchrotron Radiation Laboratory; SLAC National Accelerator Laboratory; Menlo Park California USA
5. Department of Earth and Climate Sciences; San Francisco State University; San Francisco California USA
6. Department of Earth, Planetary, and Space Science; University of California; Los Angeles California USA