Synchronous radiocarbon and climate shifts during the last deglaciation |
| |
Authors: | Hughen K A Southon J R Lehman S J Overpeck J T |
| |
Affiliation: | Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA. khughen@whoi.edu |
| |
Abstract: | Radiocarbon data from the Cariaco Basin provide calibration of the carbon-14 time scale across the period of deglaciation (15,000 to 10, 000 years ago) with resolution available previously only from Holocene tree rings. Reconstructed changes in atmospheric carbon-14 are larger than previously thought, with the largest change occurring simultaneously with the sudden climatic cooling of the Younger Dryas event. Carbon-14 and published beryllium-10 data together suggest that concurrent climate and carbon-14 changes were predominantly the result of abrupt shifts in deep ocean ventilation. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|