1. Geoscience Australia, GPO Box 378, Canberra, ACT 2601, Australia;
2. Research School of Earth Sciences, The Australian National University, Canberra, ACT 2601, Australia;
3. Formerly at: Geoscience Australia, Canberra, Australia;
4. Present address: Aranda, ACT 2614, Australia;
5. Present address: Monash, ACT 2904, Australia;
6. Northern Territory Geological Survey, NT Department of Mines and Energy, PO Box 2901, Darwin, NT 0801, Australia;
7. Present address: Department of Physical Geography and Geoecology, Charles University, Prague, Czech Republic;
8. Present address: Holder, ACT 2611, Australia