1. Research School of Earth Sciences, The Australian National University , Canberra ACT 2601, Australia
2. Geoscience Australia , GPO Box 389, Canberra ACT 2600, Australia
3. University of Western Australia , Perth WA 6009, Australia
4. Geological Survey of Western Australia , Perth WA 6004, Australia
5. Institute of Geology & Geophysics, Chinese Academy of Sciences , Beijing 10029, China
6. Geological Survey of South Australia* , Adelaide SA 5000, Australia