Structure of the 8200-year cold event revealed by a speleothem trace element record

Baldini, J.U.L.; McDermott, F.; Fairchild, I.J.

Abstract

Abrupt first-order shifts in strontium and phosphorus concentrations in stalagmite calcite deposited in western Ireland during the 8200-year event (the major cooling episode 8200 years before the present) are interpreted as responses to a drier climate lasting about 37 years. Both shifts are centered on 8330 ± 80 years before the present, coinciding with a large oxygen isotope anomaly and a change in the calcite petrography. In this very high resolution (monthly) record, antipathetic second-order oscillations in phosphorus and strontium reveal decreased growth rates and increased rainfall seasonality. Growth rate variations within the event reveal a two-pronged structure consistent with recent model simulations.

Citation

Baldini, J., McDermott, F., & Fairchild, I. (2002). Structure of the 8200-year cold event revealed by a speleothem trace element record. Science, 296(5576), 2203-2206. https://doi.org/10.1126/science.1071776

• Journal Article Type: Article
• Publication Date: 2002-06
• Deposit Date: Mar 15, 2007
• Journal: Science
• Print ISSN: 0036-8075
• Electronic ISSN: 1095-9203
• Publisher: American Association for the Advancement of Science
• Peer Reviewed: Peer Reviewed
• Volume: 296
• Issue: 5576
• Pages: 2203-2206
• DOI: https://doi.org/10.1126/science.1071776
• Keywords: Oxygen-isotope records, Climate record, Holocene, Greenland, BP, SR, Precipitation, Instability, Stalagmites, Resolution.
• Public URL: https://durham-repository.worktribe.com/output/1553179