Bill Fry¹, Emily Warren-Smith¹, Zhigang Peng², Abhijit Ghosh³ and Jeremy Gosselin⁴, (1)GNS Science, Lower Hutt, New Zealand, (2)Georgia Institute of Technology, School of Earth and Atmospheric Sciences, Atlanta, United States, (3)University of California Riverside, Department of Earth and Planetary Sciences, Riverside, CA, United States, (4)University of Ottawa, Department of Earth and Environmental Sciences, Ottawa, ON, Canada