Stable oxygen isotope record of the Eocene-Oligocene transition in the southern North Sea Basin: positioning the Oi-1 event

  • E. De Man Royal Belgian Institute of Natural Sciences, Vautierstraat 29, B-1000 Brussels, Belgium
  • L. Ivany Department of Earth Sciences, Syracuse University, Syracuse, New York 13244, USA
  • N. Vandenberghe Historical Geology K.U. Leuven, Redingenstraat 16, B-3000 Leuven, Belgium
DOI: https://doi.org/10.1017/S0016774600020266
Keywords: Eocene-Oligocene boundary, stable isotopes, Oi-1 event, sequence stratigraphy

Abstract

Preliminary stable oxygen isotope data are presented from the southern North Sea Basin successions, ranging from the Lutetian to Rupelian. Analyses were performed on fish otoliths, nuculid bivalves and benthic foraminifera and are presented as bulk δ18O values relative to a well established regional sequence stratigraphic framework. The most significant positive shift in δ18O values clearly falls at the top of the regionally recognised Bassevelde 3 sequence, which base corresponds to the Eocene-Oligocene GSSP boundary. The here documented δ18O shift is closely associated with the base of the traditional Rupelian unit-stratotype and is tentatively correlated to the globally recognised Oi-1 event.

Published
2004-09-01
How to Cite
E. De Man, L. Ivany, & N. Vandenberghe. (2004). Stable oxygen isotope record of the Eocene-Oligocene transition in the southern North Sea Basin: positioning the Oi-1 event. Netherlands Journal of Geosciences, 83, 193 - 197. https://doi.org/10.1017/S0016774600020266
Issue
Volume 83 - 2004
Section
Regular paper
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