Late cretaceous oceans and the cool tropic paradox

Steven D'Hondt, Michael A. Arthur

Research output: Contribution to journalArticlepeer-review

97 Scopus citations

Abstract

Oxygen isotopic proxies of paleo-sea surface temperatures (SSTs) suggest that Maastrichtian (about 66 million years ago) tropical SSTs were lower than those of today. They also demonstrate that Maastrichtian latitudinal SST gradients were much lower than those of the present. The low Maastrichtian SST gradients indicate that meridional heat transport was much greater or latitudinal differences in the balance of radiation to and from the sea surface were much less extreme during the latest Cretaceous than they are today, or that both conditions were true. These findings challenge traditional interpretations of "green-house" Late Cretaceous climates.

Original languageEnglish (US)
Pages (from-to)1838-1841
Number of pages4
JournalScience
Volume271
Issue number5257
DOIs
StatePublished - Mar 29 1996

All Science Journal Classification (ASJC) codes

  • General

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