Kimberley Kanani Mayfield¹, Anton Eisenhauer², Danielle Priscilla Santiago Ramos³, John A Higgins⁴, Tristan J Horner⁵, Maureen E E Auro⁵, Tomas Magna⁶, Nils Moosdorf⁷, Matthew A Charette⁸, Meagan Eagle Gonneea⁹, Nemanja Komar¹⁰, Bernhard Peucker-Ehrenbrink⁸, Adina Paytan¹¹ and Carolyn Brady¹², (1)University of California Santa Cruz, Santa Cruz, CA, United States, (2)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (3)Princeton University, Princeton, NJ, United States, (4)Princeton University, Department of Geosciences, Princeton, NJ, United States, (5)Woods Hole Oceanographic Institution, Marine Chemistry & Geochemistry, Woods Hole, MA, United States, (6)Czech Geological Survey, Prague, Czech Republic, (7)Leibniz Center for Tropical Marine Ecology, Biogeochemistry / Geology, Bremen, Germany, (8)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (9)USGS, Baltimore, MD, United States, (10)University of Hawaii at Manoa, Honolulu, HI, United States, (11)UCSC-Inst Marine Sciences, Santa Cruz, CA, United States, (12)University of California Santa Cruz, Chemistry, Santa Cruz, United States