Biogenic barium in Cretaceous-Paleogene sediments

One of the best-studied aspects of the K-Pg mass extinction is the decline and subsequent recovery of open ocean export productivity (e.g., the flux of organic matter from the...K-Pg大灭绝事件（K-Pg mass extinction）中研究最为透彻的议题之一，即为开阔海洋输出生产力的衰退与后续恢复过程（例如，源自……的有机质通量）