Ba/Sr ratio in marine barite from five DSDP and ODP holes, supplement to: Paytan, Adina; Averyt, Kristen; Faul, Kristina L; Gray, E; Thomas, E (2007): Barite accumulation, ocean productivity, and Sr/Ba in barite across the Paleocene-Eocene Thermal Maximum. Geology, 35(12), 1139-1142

Adina Paytan, Kristen Averyt, Kristina L Faul, E Gray & E Thomas
The Paleocene-Eocene Thermal Maximum (PETM), ca. 55 Ma, was a period of extreme global warming caused by rapid emission of greenhouse gases. It is unknown what ended this episode of greenhouse warming, but high oceanic export productivity over thousands of years (as indicated by high accumulation rates of barium, Ba) may have been a factor in ending this warm period by carbon sequestration. However, Ba has a short oceanic residence time (~10 k.y.), so a...
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