High tide of the warm Pliocene; implications of global sea level for Antarctic deglaciation

We obtained global sea-level (eustatic) estimates with a peak of ∼22 m higher than present for the Pliocene interval 2.7-3.2 Ma from backstripping in Virginia (United States), New Zealand, and Enewetak Atoll (north Pacific Ocean), benthic foraminiferal δ18O values, and Mg/Ca-δ18O estimates. Statisti...

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Bibliographic Details
Published in:Geology (Boulder) 2012-05, Vol.40 (5), p.407-410
Main Authors: Miller, Kenneth G, Wright, James D, Browning, James V, Kulpecz, Andrew, Kominz, Michelle, Naish, Tim R, Cramer, Benjamin S, Rosenthal, Yair, Peltier, W. Richard, Sosdian, Sindia
Format: Article
Language:English
Subjects:
alkaline earth metals
Antarctic ice sheet
Antarctica
Australasia
backstripping
benthic taxa
calcium
Cenozoic
deglaciation
East Antarctic ice sheet
Enewetak Atoll
Foraminifera
geochemical indicators
Geological time
Geology
glacial geology
Glaciers
global
ice sheets
Invertebrata
isotope ratios
isotopes
magnesium
Marine
Marshall Islands
metals
Mg/Ca
microfossils
Micronesia
Neogene
New Zealand
North Pacific
O-18/O-16
Oceania
oxygen
Pacific Ocean
paleoclimatology
paleotemperature
Pliocene
Protista
Sea level
sea-level changes
stable isotopes
Statistical analysis
Stratigraphy
Tertiary
United States
Virginia
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Summary:We obtained global sea-level (eustatic) estimates with a peak of ∼22 m higher than present for the Pliocene interval 2.7-3.2 Ma from backstripping in Virginia (United States), New Zealand, and Enewetak Atoll (north Pacific Ocean), benthic foraminiferal δ18O values, and Mg/Ca-δ18O estimates. Statistical analysis indicates that it is likely (68% confidence interval) that peak sea level was 22 ± 5 m higher than modern, and extremely likely (95%) that it was 22 ± 10 m higher than modern. Benthic foraminiferal δ18O values appear to require that the peak was
ISSN:0091-7613
1943-2682
DOI:10.1130/G32869.1