Fig. 2.

Comparison of Os_i records from the MECO with Os_i records from the PETM and ETM2, shown against the overall Os_i evolution of the Cenozoic and the relative weathering feedback strength of the Cenozoic. a MECO data from Site 959 (in red), Site 1263 (in blue) and Site U1333 (in green) plotted against age (GTS2012)⁷⁴. See Methods for discussion of the age models for the study sites. b MECO data from Sites 959, 1263, and U1333 (this study); PETM and ETM2 data from DSDP Site 549 (in purple) as published in Peucker-Ehrenbrink & Ravizza¹⁵; Cenozoic data from ferromanganese crusts D11 and CD29 (in black) as published in Klemm et al.²⁷ and Burton²⁸, respectively, based on the updated age model of Nielsen et al.²⁹. c Model estimates of the relative continental weathering feedback strength of the Cenozoic as published in Caves et al.⁵⁷, based on their CO₂ scenario 1 and a logarithmic expression for the weathering feedback