Modelling eccentricity forcing of long-term Cenozoic carbon cycling reveals both 405-kyr and 2.4-Myr cyclicity

Superimposed on the Cenozoic trend from hot to cold climates is a distinct and con- tinuous imprint of the long 405 thousand year (kyr) eccentricity cycle on climate and the carbon cycle. In sediment records from the Early Paleogene to the Pliocene, stable carbon isotopes (δ13C) and oxygen isotopes (δ18O) from benthic and planktonic foraminifera...