Boron proxy constraints on the magnitude of surface ocean acidification during the Paleocene-Eocene Thermal Maximum

Donald E. Penman (a), Barbel Hönisch (b), Ellen Thomas (c), Richard E. Zeebe (d), D. Clay Kelly (e) & James C. Zachos (a)
(a) Department of Earth and Planetary Sciences, University of California Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA. E-mail: dpenman@ucsc.edu (b) Department of Earth and Environmental Sciences and Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, USA. (c) Department of Geology and Geophysics, Yale University, New Haven, CT 06520-8109, USA. (d) Department of Oceanography, SOEST, University of Hawaii at M?noa, Honolulu, HI, USA. (e) Department of Geoscience, Lewis G. Weeks Hall for Geological Sciences, University of Wisconsin-Madison, WI 53706-1692, USA.