IVANOV, Boris, Institute for Dynamics of Geospheres, Russian Academy of Science, Leninsky Prospect 38-1, Moscow 119334 Russia, baivanov@idg.chph.ras.ru

DENCE, Michael R., suite 2602, 38 Metropole Private, Ottawa, ON K1Z 1E9 Canada, mrdence@rogers.com

SPRAY, John G., Planetary and Space Science Centre, Department of Earth Sciences, University of New Brunswick, 2 Bailey Drive, Fredericton, NB E3B 5A3 Canada, jgs@unb.ca

BORG, John, Department of Mechanical Engineering, Marquette University, 1515 W. Wisconsin Ave, Milwaukee, WI 53233, john.borg@mu.edu

ONG, Lissa, Department of Planetary Sciences, University of Arizona, 1629 E University Blvd, Tucson, AZ 85721, long@lpl.arizona.edu and MELOSH, Jay, Earth and Atmospheric Sciences, Purdue University, 550 Stadium Mall Drive, West Lafayette, IN 47907

THOMPSON, Lucy M., Planetary and Space Science Centre, Department of Earth Sciences, University of New Brunswick, 2 Bailey Drive, Fredericton, NB E3B 5A3 Canada, lthompso@unb.ca

CAVOSIE, Aaron J.¹, MOSER, Desmond E.², THOMSON, Olivia A.¹, ERICKSON, Timmons M.¹, BARKER, Ivan², and RADOVAN, Henri A.³, (1) Department of Geology, University of Puerto Rico, PO Box 9000, Mayaguez, PR 00681, aaron.cavosie@upr.edu, (2) Department of Earth Sciences, University of Western Ontario, 1151 Richmond St. North, London, ON N6A 5B7, Canada, (3) Department of Physics, University of Puerto Rico, PO Box 9000, Mayaguez, PR 00681

BOONSUE, Suporn, Planetary and Space Science Centre, Department of Earth Sciences, University of New Brunswick, 2 Bailey Drive, Fredericton, NB E3B 5A3 Canada, sboonsue@unb.ca

BIREN, Marc B., Planetary and Space Science Centre, Department of Earth Sciences, University of New Brunswick, 2 Bailey Drive, Fredericton, NB E3B 5A3 Canada, marc.biren@unb.ca

PAISARNSOMBAT, Sarinya, Planetary and Space Science Centre, Department of Earth Sciences, University of New Brunswick, 2 Bailey Drive, Fredericton, NB E3B 5A3 Canada, sarinya.p@unb.ca

RUSSELL, Catrina E., Planetary and Space Science Centre, Department of Earth Sciences, University of New Brunswick, 2 Bailey Drive, Fredericton E3B 5A3, f5sr1@unb.ca

GARDE, Adam A., Geological Survey of Denmark and Greenland, Øster Voldgade 10, Copenhagen K, 1350, Denmark, aag@geus.dk, ESBENSEN, Kim H., Geological Survey of Denmark and Greenland, Oster Voldgade 10, Copenhagen K, 1350, Denmark, and MCDONALD, Iain, School of Earth & Ocean Sciences, Cardiff University, Cardiff, CF10 3YE, United Kingdom

EVANS, Kevin, Geography, Geology, and Planning Department, Missouri State University, 901 S. National Ave, Springfield, MO 65804-0089, KevinEvans@MissouriState.edu, MICKUS, Kevin L., Geosciences, Missouri State Univ, 901 S National Ave, Springfield, MO 65804-0087, MILLER, James F., Geography, Geology, & Planning Dept, Missouri State University, Springfield, MO 655897, and DAVIS, George H., Missouri Department of Transportation, 1617 Missouri Blvd, Jefferson City, MO 65102