Pliocene climate and seasonality in North Atlantic shelf seas
This paper reviews North Atlantic shelf seas palaeoclimate during the interval 4-3 Ma, prior to and incorporating the ‘mid Pliocene warm period’ (ca 3.29-2.97 Ma). Fossil assemblages and stable isotope data demonstrate northwards extension of subtropical faunas along the coast of the Carolinas-Virgi...
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ftleicesterunfig:oai:figshare.com:article/10083797 2023-05-15T17:28:43+02:00 Pliocene climate and seasonality in North Atlantic shelf seas Mark Williams Alan M. Haywood Elizabeth M. Harper Andrew L.A. Johnson Tanya Knowles Melanie J. Leng Daniel J. Lunt Beth Okamura Paul D. Taylor Jan Zalasiewicz 2009-01-13T00:00:00Z https://figshare.com/articles/journal_contribution/Pliocene_climate_and_seasonality_in_North_Atlantic_shelf_seas/10083797 unknown 2381/8082 https://figshare.com/articles/journal_contribution/Pliocene_climate_and_seasonality_in_North_Atlantic_shelf_seas/10083797 All Rights Reserved Uncategorized Pliocene shelf seas bryozoans bivalves seasonality Text Journal contribution 2009 ftleicesterunfig 2021-11-11T20:10:58Z This paper reviews North Atlantic shelf seas palaeoclimate during the interval 4-3 Ma, prior to and incorporating the ‘mid Pliocene warm period’ (ca 3.29-2.97 Ma). Fossil assemblages and stable isotope data demonstrate northwards extension of subtropical faunas along the coast of the Carolinas-Virginia (Yorktown and Duplin formations) relative to the present day, suggesting a more vigorous Florida Current, with reduced seasonality and warm water extending north of Cape Hatteras(reconstructed annual range for Virginia 12-30°C). This interpretation supports conceptual models of increased meridional heat transport for the Pliocene. Sea temperatures for Florida (Lower Pinecrest Beds) were similar to or slightly cooler (summers 25-27°C) than today, and were probably influenced by seasonal upwelling of cold deep water. Reduced seasonality is also apparent in the Coralline Crag Formation of the southern North Sea, with ostracods suggesting winter sea temperatures of 10°C (modern 4°C). However, estimates from Pliocene bivalves (3.6- 16.6°C) are similar to or cooler than the present day. This ‘mixed’ signal is problematic given warmer seas in the Carolinas-Virginia, and climate model and oceanographic data that show warmer seas in the ‘mid Pliocene’ eastern North Atlantic. This may be because the Coralline Crag Formation was deposited prior to peak ‘mid Pliocene’ warmth. Other Non-Article Part of Journal/Newspaper North Atlantic University of Leicester: Figshare |
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Open Polar |
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University of Leicester: Figshare |
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ftleicesterunfig |
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unknown |
topic |
Uncategorized Pliocene shelf seas bryozoans bivalves seasonality |
spellingShingle |
Uncategorized Pliocene shelf seas bryozoans bivalves seasonality Mark Williams Alan M. Haywood Elizabeth M. Harper Andrew L.A. Johnson Tanya Knowles Melanie J. Leng Daniel J. Lunt Beth Okamura Paul D. Taylor Jan Zalasiewicz Pliocene climate and seasonality in North Atlantic shelf seas |
topic_facet |
Uncategorized Pliocene shelf seas bryozoans bivalves seasonality |
description |
This paper reviews North Atlantic shelf seas palaeoclimate during the interval 4-3 Ma, prior to and incorporating the ‘mid Pliocene warm period’ (ca 3.29-2.97 Ma). Fossil assemblages and stable isotope data demonstrate northwards extension of subtropical faunas along the coast of the Carolinas-Virginia (Yorktown and Duplin formations) relative to the present day, suggesting a more vigorous Florida Current, with reduced seasonality and warm water extending north of Cape Hatteras(reconstructed annual range for Virginia 12-30°C). This interpretation supports conceptual models of increased meridional heat transport for the Pliocene. Sea temperatures for Florida (Lower Pinecrest Beds) were similar to or slightly cooler (summers 25-27°C) than today, and were probably influenced by seasonal upwelling of cold deep water. Reduced seasonality is also apparent in the Coralline Crag Formation of the southern North Sea, with ostracods suggesting winter sea temperatures of 10°C (modern 4°C). However, estimates from Pliocene bivalves (3.6- 16.6°C) are similar to or cooler than the present day. This ‘mixed’ signal is problematic given warmer seas in the Carolinas-Virginia, and climate model and oceanographic data that show warmer seas in the ‘mid Pliocene’ eastern North Atlantic. This may be because the Coralline Crag Formation was deposited prior to peak ‘mid Pliocene’ warmth. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Mark Williams Alan M. Haywood Elizabeth M. Harper Andrew L.A. Johnson Tanya Knowles Melanie J. Leng Daniel J. Lunt Beth Okamura Paul D. Taylor Jan Zalasiewicz |
author_facet |
Mark Williams Alan M. Haywood Elizabeth M. Harper Andrew L.A. Johnson Tanya Knowles Melanie J. Leng Daniel J. Lunt Beth Okamura Paul D. Taylor Jan Zalasiewicz |
author_sort |
Mark Williams |
title |
Pliocene climate and seasonality in North Atlantic shelf seas |
title_short |
Pliocene climate and seasonality in North Atlantic shelf seas |
title_full |
Pliocene climate and seasonality in North Atlantic shelf seas |
title_fullStr |
Pliocene climate and seasonality in North Atlantic shelf seas |
title_full_unstemmed |
Pliocene climate and seasonality in North Atlantic shelf seas |
title_sort |
pliocene climate and seasonality in north atlantic shelf seas |
publishDate |
2009 |
url |
https://figshare.com/articles/journal_contribution/Pliocene_climate_and_seasonality_in_North_Atlantic_shelf_seas/10083797 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
2381/8082 https://figshare.com/articles/journal_contribution/Pliocene_climate_and_seasonality_in_North_Atlantic_shelf_seas/10083797 |
op_rights |
All Rights Reserved |
_version_ |
1766121561450872832 |