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Terrestrial and marine records of climatic and environmental changes during the Pliocene in subtropical Florida

Geology

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, , , and

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Abstract

Pollen, ostracode, and benthic foraminifer assemblages deposited during sea-level highstands in subtropical Florida record a climate change during the period 4.5-1.0 Ma. Before 3.5 Ma, open-shelf marine faunas and pollen assemblages with abundant Pinus, Quercus, Fagus, Carya, and nonarboreal pollen were present, indicating cooler conditions than today. From ~3.5 to 1.0 Ma, marine and terrestrial records indicate warmer conditions, similar to those existing in south Florida today. Combined with evidence for much warmer than modern conditions at high latitudes, these data suggest that increased poleward oceanic heat transport, possibly related to the emergence of the Central American isthmus between ~3.5 and 2.5 Ma, was a major influence on mid-Pliocene warmth. -Authors

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Terrestrial and marine records of climatic and environmental changes during the Pliocene in subtropical Florida
Series title:
Geology
Volume
21
Issue:
8
Year Published:
1993
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Geology
First page:
679
Last page:
682
Number of Pages:
4