Multi-proxy evidence for oceanographic changes in the Southern Ocean during the lead-up to the Oligocene/Miocene Boundary (Mi-1 Event)

Andrew J Fraass, University of Massachusetts Amherst, Amherst, United States, R Mark Leckie, Univ Massachusetts, Earth, Geographic, and Climate Sciences, Amherst, United States, Chelsea McQuaid, University of Massachusetts Amherst, Amherst, MA, United States, Robert M Deconto, University of Massachusetts Amherst, Department of Geosciences, Amherst, United States and James C Zachos, University of California Santa Cruz, Santa Cruz, CA, United States