1. School of Environmental Sciences Cardiff University Cardiff UK
2. School of Earth Sciences University of Bristol Bristol UK
3. Now at Department of Geology University of Otago Dunedin New Zealand
4. Department of Earth Sciences Syracuse University Syracuse NY USA
5. BP America Houston TX USA
6. School of Earth and Sustainability Northern Arizona University Flagstaff AZ USA
7. Geological Survey Department Mzuzu Regional Office Mzuzu Malawi
8. Geography and Earth Sciences Department University of Malawi Zomba Malawi
9. Geological Survey Department Zomba Malawi