Changes in ocean geochemistry across the K-Pg boundary interval
The Cretaceous - Paleogene boundary (K-Pg, 66 Ma) was a time interval with dramatic changes in the Earth’s climate and the ocean environment. It was characterized by severe disruptions of marine biogeochemical cycles due to a meteorite impact during a time of active volcanism. The extinction of calcifiers, among others, influenced biogeochemical cycles and changed the conditions for carbonate depo