Abrupt change in the upwelling system along the southern margin of the Tethys during the Paleocene-Eocene transition event

G. Lu, Gerta Keller, T. Adatte, C. Benjamini

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Faunal, isotopic, and mineralogic analyses at the Ben-Gurion 500, Southern Israel, section reveal a major change in the tradewind-driven upwelling system along the southern Tethys margin coincident with the Paleocene-Eocene (P-E) global change in climate and oceanography. During the P-E event, upwelling was significantly weakened or eliminated, as suggested by the disappearance of radiolaria, maximum planktic-benthic foraminiferal ratio, maximum calcite content, and the elimination of the planktic δ13C difference between the southern margin and deep basins. This reduction in upwelling intensity suggests a weakened atmospheric circulation associated with the reduced meridional thermal gradient during the P-E global change.

Original languageEnglish (US)
Pages (from-to)185-195
Number of pages11
JournalIsrael Journal of Earth Sciences
Volume44
Issue number4
StatePublished - Dec 1 1995

All Science Journal Classification (ASJC) codes

  • Earth and Planetary Sciences(all)

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