1. Department of Geology and Geophysics University of Utah Salt Lake City UT USA
2. Institute of Earth Sciences Academia Sinica Taipei Taiwan
3. Cooperative Institute for Research in Environmental Sciences and Department of Geological Sciences University of Colorado Boulder Boulder CO USA
4. Department of Geology and Geological Engineering South Dakota School of Mines and Technology Rapid City SD USA
5. Department of Geosciences State University of New York at Stony Brook Stony Brook NY USA