Andrew D Wickert¹, Carlie Williams, Kerry Lee Callaghan³, Ruza F Ivanovic⁴, Paul J Valdes⁵, Lauren J Gregoire⁶, Lael Vetter⁷, Andrew J. Breckenridge⁸ and Carrie E Jennings³, (1)University of Minnesota, Department of Earth & Environmental Sciences and Saint Anthony Falls Laboratory, Minneapolis, MN, United States, (2)University of Minnesota, Department of Earth & Environmental Sciences, Minneapolis, MN, United States, (3)University of Leeds, School of Earth and Environment, Leeds, LS2, United Kingdom, (4)University of Bristol, Bristol, BS8, United Kingdom, (5)University of Leeds, School of Earth and Environment, Leeds, United Kingdom, (6)University of Arizona, Department of Geosciences, Tucson, AZ, United States, (7)University of Wisconsin - Superior, Superior, WI, United States