Emily Etheridge¹, Nicholas J Dygert², Molly Anderson³, Anah Bogdan², Emily J Chin⁴, Yumiko Harigane⁵, George Denny², Véronique Le Roux⁶, Matt Leybourne⁷, Yasuhiko Ohara⁸, Tomoyo Okumura⁹, Ignacio Pujana¹⁰, George Segee-Wright¹¹ and Robert J Stern¹², (1)University of Tennessee, Department of Earth, Environmental and Planetary Sciences, Knoxville, United States, (2)University of Tennessee, Knoxville, United States, (3)Woods Hole Oceanographic Institution, Department of Marine Chemistry & Geochemistry, Woods Hole, United States, (4)UC San Diego, Scripps Institution of Oceanography, GRD, La Jolla, United States, (5)Geological Survey of Japan, Tsukuba, Japan, (6)Centre de Recherches Pétrographiques et Géochimiques, Nancy, France, (7)Queens University, Kingston, ON, Canada, (8)Hydrographic and Oceanographic Department of Japan, Tokyo, Japan, (9)Kochi University, Kochi, Japan, (10)University of Texas at Dallas, Dept. of Sustainable Earth Systems Sciences, Richardson, United States, (11)CPRG U. Lorraine, Lorraine, France, (12)University of Texas at Dallas, Geosciences, Richardson, TX, United States