1. Department of Earth, Ocean and Ecological Sciences University of Liverpool Liverpool UK
2. Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China
3. Institutions of Earth Science Chinese Academy of Sciences Beijing China
4. Research School of Earth Sciences The Australian National University Canberra ACT Australia
5. Institute for Rock Magnetism, Winchell School of Earth Sciences University of Minnesota Minneapolis MN USA