International Journal of Earth Sciences

, Volume 89, Issue 2, pp 390–414 | Cite as

The Paleocene–Eocene transition in the marginal northeastern Tethys (Kazakhstan and Uzbekistan)

  • M.-P. Bolle
  • A. Pardo
  • K.-U. Hinrichs
  • T. Adatte
  • K. Von Salis
  • S. Burns
  • G. Keller
  • N. Muzylev
ORIGINAL PAPER

Abstract

We studied two sections that accumulated during the Paleocene–Eocene transition in shelf waters in the northeastern Tethys. Stable carbon isotopic compositions of marine and terrestrial biomarkers are consistent with a 13C depletion in the oceanic and atmospheric carbon dioxide pools during the Late Paleocene Thermal Maximum (LPTM; Subzone P5b). The 2–3‰ negative δ13C excursion in planktic foraminifera coincides with minimum δ18O values, an incursion of transient subtropical planktic foraminiferal fauna, and the occurrence of an organic-rich sapropelite unit in Uzbekistan, which accumulated at the onset of a transgressive event. Biomarker distributions and hydrogen indices indicate that marine algae and bacteria were the major organic matter sources. During the Late Paleocene (Subzones P4 and P5a), the marginal northeastern Tethys experienced a temperate to warm climate with wet and arid seasons. Most likely, warm and humid climate initiated during the LPTM (Subzone P5b) and subsequently extended during the Eocene (Zone P6) onto adjacent land areas of the marginal northeastern Tethys.

Key words Northeastern Tethys Late Paleocene Thermal maximum Climate Clay minerals Stable isotopes Organic matter Biomarkers 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • M.-P. Bolle
    • 1
  • A. Pardo
    • 2
  • K.-U. Hinrichs
    • 3
  • T. Adatte
    • 1
  • K. Von Salis
    • 4
  • S. Burns
    • 5
  • G. Keller
    • 6
  • N. Muzylev
    • 7
  1. 1.Institut de Géologie, 11 Emile Argand, Université de Neuchâtel, CH-2007 Neuchâtel, Switzerland e-mail: marie-pierre.bolle@geol.unine.ch Tel.: +41-32-7182613 Fax: +41-32-7182601CH
  2. 2.Departamento de Ciencas de la Tierre, Universidad de Zaragoza, E-50009 Zaragoza, SpainES
  3. 3.Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USAUS
  4. 4.Geologisches Institut, ETH-Zentrum, CH-8092 Zürich, SwitzerlandCH
  5. 5.Geologisches Institut, Balzerstrasse, Universität Bern, CH-3000 Bern, SwitzerlandCH
  6. 6.Department of Geosciences, Princeton University, Princeton, New Jersey 08544, USAUS
  7. 7.Geological Institute, Russian Academy of Sciences, Pyzhevskii per.7, Moscow, 109017 RussiaRU

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