1. Department of Geological Sciences University of Florida Gainesville FL USA
2. School of Oceanography Shanghai Jiao Tong University Shanghai China
3. Department of Earth, Atmospheric and Planetary Sciences Massachusetts Institute of Technology Cambridge MA USA
4. Jackson School of Geosciences Institute of Geophysics University of Texas at Austin Austin TX USA
5. Geochemical and Environmental Research Group Texas A&M University College Station TX USA
6. Department of Earth and Planetary Sciences Washington University St. Louis MO USA
7. School of Natural Resources and Extension University of Alaska Fairbanks Fairbanks AK USA
8. Institute of Northern Engineering University of Alaska Fairbanks Fairbanks AK USA
9. Department of Earth Sciences Geological Institute ETH Zürich Zürich Switzerland
10. Department of Physics Laboratory of Ion Beam Physics ETH Zürich Zürich Switzerland