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 Mark Leckie, Univ Massachusetts, Earth, Geographic, and Climate Sciences, Amherst, United States, Chelsea McQuaid, University of Massachusetts Amherst, Amherst, MA, United States, Rob DeConto, University of Massachusetts Amherst, Department of Earth, Geographic and Climate Sciences, Amherst, United States and James C Zachos, University of California Santa Cruz, Santa Cruz, United States