Planktonic foraminiferal faunas of the equatorial Pacific suggest Early Miocene origin of present oceanic circulation.

G. Keller

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Quantitative planktonic foraminiferal analyses of L Miocene sections reveal a hiatus encompassing part of foraminiferal Zones N6 to N7 marking the extinction of Oligocene faunas that survived into the Early Miocene. This faunal event is marked by a cooling reflected in the O isotope record and appears to mark the introduction of cool Antarctic bottom water into the Pacific basin due to the opening of the Drake Passage that allowed deep circum-Antarctic circulation by about 22-25 Ma.-from Author

Original languageEnglish (US)
Pages (from-to)269-295
Number of pages27
JournalMarine Micropaleontology
Volume6
Issue number3
DOIs
StatePublished - Jan 1 1981
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Oceanography
  • Palaeontology

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