Kenneth C Creager, University of Washington, Earth and Space Sciences, Seattle, WA, United States, Carl W Ulberg, University of Washington, Seattle, WA, United States, Eric Kiser, Rice University, Earth Science Department, Houston, TX, United States, Alan Levander, Rice University, Earth, Environmental and Planetary Sciences, Houston, TX, United States, Geoffrey A Abers, Lamont -Doherty Earth Observatory, Palisades, NY, United States and J Michael Brown, University of Washington Seattle Campus, Seattle, WA, United States