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A 50,000-Year Record of Climate Oscillations from Florida and Its Temporal Correlation with the Heinrich Events

Grimm, Eric C., Jacobson, George L., Watts, William A., Hansen, Barbara C. S., Maasch, Kirk A.·1993·Science

Abstract

Oscillations of Pinus (pine) pollen in a 50,000-year sequence from Lake Tulane, Florida, indicate that there were major vegetation shifts during the last glacial cycle. Episodes of abundant Pinus populations indicate a climate that was more wet than intervening phases dominated by Quercus (oak) and Ambrosia -type (ragweed and marsh-elder). The Pinus episodes seem to be temporally correlated with the North Atlantic Heinrich events, which were massive, periodic advances of ice streams from the eastern margin of the Laurentide Ice Sheet. Possible links between the Tulane Pinus and Heinrich events include hemispheric cooling, the influences of Mississippi meltwater on sea-surface temperatures in the Gulf of Mexico, and the effects of North Atlantic thermohaline circulation on currents in the Gulf.

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Metadata

Authors
Grimm, E. C., Jacobson, G. L., Watts, W. A., Hansen, B. C. S., & Maasch, K. A.
Venue
Science
Published
1993-07-09
Volume
261
Issue
5118
Pages
198-200
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2037041276
Cited by
368
References
0
FWCI
7.65
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: A 50,000-Year Record of Climate Oscillations from Florida and Its Temporal Correlation with the Heinrich Events. https://app.cochat.ai/papers/10.1126/science.261.5118.198
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Grimm, E. C., Jacobson, G. L., Watts, W. A., Hansen, B. C. S., & Maasch, K. A. (1993). A 50,000-Year Record of Climate Oscillations from Florida and Its Temporal Correlation with the Heinrich Events. Science. https://doi.org/10.1126/science.261.5118.198

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