Alexa Marie Regnier¹, Thomas M Cronin², Marci M Robinson³, Helen Katherine Coxall⁴, Rowan Lockwood¹, Harry J Dowsett² and Matt O'Regan⁴, (1)College of William and Mary, Geology, Williamsburg, VA, United States, (2)U.S. Geological Survey, Florence Bascom Geoscience Center, Reston, VA, United States, (3)USGS, Reston, VA, United States, (4)Stockholm University, Department of Geological Sciences, Stockholm, Sweden