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

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

Authors

F. McDermott

I.J. Fairchild



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.

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