Affiliation: | 1. US Geological Survey, Denver, Colorado, USA 2. Department of Geology, Wollongong University College, Wollongong, NSW, Australia 3. Department of Applied Earth Sciences, Stanford University, Stanford, California, USA 4. Northrhine-Westphalia Geological Survey, Krefeld, West Germany 5. MRC Unit, University of Leicester, Leicester, England 6. Department of Statistics, University of the Witwatersrand, Johannesburg, South Africa 7. Smithsonian Institution, Washington, D.C., USA 8. Department of Geology, Syracuse University, Syracuse, N. Y., USA
|