1. Department of Geology; Bowling Green State University; Bowling Green Ohio USA
2. Department of Geological Sciences; Albion College; Albion Michigan USA
3. New Mexico Institute of Mining and Technology; Socorro New Mexico USA
4. Department of Earth, Planetary, and Space Sciences and Department of Atmospheric and Oceanic Sciences; Institute of the Environment and Sustainability, Institute of Geophysics and Planetary Physics, California Nanosystems Institute, University of California; Los Angeles California USA
5. Department of Geological Sciences; University of Oregon; Eugene Oregon USA
6. Department of Geology and Geophysics; Woods Hole Oceanographic Institution; Woods Hole Massachusetts USA