1. School of Earth, Atmospheric, and Environmental Sciences, University of Manchester, Manchester M13 9PL, UK.
2. Williamson Research Centre for Molecular Environmental Science, University of Manchester, Manchester M13 9PL, UK.
3. Department of Earth and Environmental Sciences, University of Pennsylvania, Philadelphia, PA 19104, USA.
4. SLAC National Accelerator Laboratory, Stanford Synchrotron Radiation Lightsource (SSRL), Menlo Park, CA 94025, USA.
5. Faculty of Life Sciences, University of Manchester, Manchester M13 9PT, UK.
6. School of Science and the Environment, Manchester Metropolitan University, Manchester M1 5GD, UK.
7. Black Hills Institute of Geological Research, Hill City, SD 57745, USA.
8. School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
9. Chinese Academy of Geological Sciences, Institute of Geology, 26 Baiwanzhuang Road, Beijing, P. R. China, 100037.
10. Gansu Geological Museum, 6 Tuan Jie Road, Lanzhou, Gansu, P. R. China, 730030.
11. SLAC National Accelerator Laboratory, Linac Coherent Light Source, Menlo Park, CA 94025, USA.