1. Department of Geosciences and Geological and Petroleum Engineering Missouri University of Science and Technology Rolla MO USA
2. Department of Geosciences Boise State University Boise ID USA
3. Independent Consultant Geologist Guatemala City Guatemala
4. Istituto Nazionale di Oceanografia e di Geofisica Sperimentale ‐ OGS Trieste Italy
5. Independent Consultant Geologist Granbury TX USA