Micro-Scale Sulfur and Carbon Isotope Analysis of a Neoarchean Stromatolite: Evidence for a Profound Redox Transition in Shelf Margins prior to the Great Oxidation Event

Peter Ilhardt, Pennsylvania State University Main Campus, Department of Geosciences, University Park, PA, United States, Christopher H House, The Pennsylvania State University, Department of Geosciences, University Park, United States and Wladyslaw Altermann, University of Pretoria, Department of Geology, Pretoria, South Africa