Reorganization of biogenic Si burial decreased reverse weathering, increased seawater Mg/Ca, and cooled the Earth over the past 65 million years

Ann G Dunlea1, Richard W Murray2, Danielle Priscilla Santiago Ramos3 and John A Higgins3, (1)Woods Hole Oceanographic Institution, Geology and Geophysics, Woods Hole, MA, United States, (2)Boston University, Earth and Environment, Boston, MA, United States, (3)Princeton University, Princeton, NJ, United States