Extreme warming of tropical waters during the Paleocene–Eocene Thermal Maximum

dc.contributor.authorAze, T.
dc.contributor.authorPearson, P. N.
dc.contributor.authorDickson, A. J.
dc.contributor.authorBadger, M. P. S.
dc.contributor.authorBown, P. R.
dc.contributor.authorPancost, R. D.
dc.contributor.authorGibbs, S. J.
dc.contributor.authorHuber, Brian T.
dc.contributor.authorLeng, M. J.
dc.contributor.authorCoe, A. L.
dc.contributor.authorCohen, A. S.
dc.contributor.authorFoster, G. L.
dc.date.accessioned2015-04-20T15:15:43Z
dc.date.available2015-04-20T15:15:43Z
dc.date.issued2014
dc.description.abstractThe Paleocene–Eocene Thermal Maximum (PETM), ca. 56 Ma, was a major global environmental perturbation attributed to a rapid rise in the concentration of greenhouse gases in the atmosphere. Geochemical records of tropical sea-surface temperatures (SSTs) from the PETM are rare and are typically affected by post-depositional diagenesis. To circumvent this issue, we have analyzed oxygen isotope ratios (δ18O) of single specimens of exceptionally well-preserved planktonic foraminifera from the PETM in Tanzania (∼19°S paleolatitude), which yield extremely low δ18O, down to 3 °C during the PETM and may have exceeded 40 °C. Calcareous plankton are absent from a large part of the Tanzania PETM record; extreme environmental change may have temporarily caused foraminiferal exclusion.
dc.format.extent739–742
dc.identifier0091-7613
dc.identifier.citationAze, T., Pearson, P. N., Dickson, A. J., Badger, M. P. S., Bown, P. R., Pancost, R. D., Gibbs, S. J., Huber, Brian T., Leng, M. J., Coe, A. L., Cohen, A. S., and Foster, G. L. 2014. "Extreme warming of tropical waters during the Paleocene–Eocene Thermal Maximum." <em>Geology</em>, 42, (9) 739–742. <a href="https://doi.org/10.1130/G35637.1">https://doi.org/10.1130/G35637.1</a>.
dc.identifier.issn0091-7613
dc.identifier.urihttp://hdl.handle.net/10088/25482
dc.publisherThe Geological Society of America
dc.relation.ispartofGeology 42 (9)
dc.titleExtreme warming of tropical waters during the Paleocene–Eocene Thermal Maximum
dc.typearticle
sro.description.unitNH-Paleobiology
sro.description.unitNMNH
sro.identifier.doi10.1130/G35637.1
sro.identifier.itemID127582
sro.identifier.refworksID4053

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