Mg and Ca Isotopes and 87Sr/86Sr Ratios Identify the Deep Structural Center of the Williston Basin as a Source of Mg for Dolomitization: Implications for Reconstructing Seawater Secular Records Using Dolomite

Matthew D Nadeau1,2, Sara R Kimmig1,3 and Chris E Holmden1, (1)University of Saskatchewan, Geological Sciences, Saskatoon, SK, Canada, (2)Princeton University, Geosciences, Princeton, NJ, United States, (3)Pacific Northwest National Laboratory, Subsurface Science and Technology Group, Richland, WA, United States