1. Department of Geosciences University of Arizona Tucson AZ USA
2. Now at Department of Geology and Geophysics University of Wyoming Laramie WY USA
3. Department of Earth and Planetary Science University of California Berkeley CA USA
4. Now at Department of Earth Sciences University of Hawai'i Honolulu HI USA
5. Now at Geosciences Research Division Scripps Institution of Oceanography University of California San Diego La Jolla CA USA
6. Now at Rio Tinto Exploration Salt Lake City UT USA
7. Now at Kane Environmental Inc. Seattle WA USA