Oceanic organic carbon as a possible first-order control on the carbon cycle during the Bathonian–Callovian
"Oceans are the largest, readily exchangeable, superficial carbon reservoir; a current challenge in investigating past and present environments and predict future evolution relates to the role of oceanic carbon in regulating Earths' carbon cycle and climate. At least one paired δ13Ccarb-TOC decoupling event is noted in the Late Bathonian–Early Callovian. [...]"
Source: Global and Planetary Change
Authors: Ricardo L.Silva et al.