1. Department of Geosciences Virginia Tech Blacksburg VA USA
2. Department of Geological Sciences University of Delaware Newark DE USA
3. Boone Pickens School of Geology Oklahoma State University Stillwater OK USA
4. Department of Geography, Geology and Planning Missouri State University Springfield MO USA
5. School of Geography, Geology and the Environment University of Leicester Leicester UK
6. School of Geology and Geophysics University of Oklahoma Norman OK USA