Long-term trends and orbital variability in late Paleocene and early Eocene (LPEE) climate, carbonate chemistry and planktic foraminiferal Mg/Ca

James C Zachos, University of California Santa Cruz, Santa Cruz, CA, United States, Dustin T Harper, University of California-Santa Cruz, Earth and Planetary Sciences, Santa Cruz, CA, United States, Baerbel Hoenisch, Lamont -Doherty Earth Observatory, Palisades, NY, United States, Richard E Zeebe, Univ Hawaii Manoa, Honolulu, HI, United States and Laura Haynes, Columbia University of New York, Palisades, NY, United States