1. Stanford Synchrotron
Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
2. Department
of Environmental Earth System Science, Stanford University, Stanford, California 94305, United States
3. Université
de Lorraine, Vandœuvre-lès-Nancy, F-54501, France
4. Department
of Geological Sciences, Stanford University, Stanford, California 94305, United States
5. Earth Sciences
Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States