Globally elevated temperatures during the Cretaceous extreme greenhouse climate interval
were punctuated by the Valanginian cooling event, which was characterized by a positive
carbon isotope excursion, global cooling, and a glacial event approximately at 135 Ma.
Disentangling ocean temperature and continental ice volume trends enables us to better
understand climate fluctuations over deep time. We investigated the ocean temperature–ice
sheet dynamics of glaciation events that occurred in the Cretaceous greenhouse world. New …