The record of the Paleocene-Eocene thermal maximum in the Ager Basin (Central Pyrenees, Spain)

Authors

  • N. MINELLI Dipartimento di Fisica e Scienze della Terra Macedonio Melloni. Parco Area delle Scienze 157/A, 43100 Parma, Italy.
  • V. MANZI Dipartimento di Fisica e Scienze della Terra Macedonio Melloni. Parco Area delle Scienze 157/A, 43100 Parma, Italy. Alpine Laboratory of Palaeomagnetism (ALP) Via Madonna dei Boschi 76, 12016 Peveragno (CN), Italy
  • M. ROVERI Dipartimento di Fisica e Scienze della Terra Macedonio Melloni. Parco Area delle Scienze 157/A, 43100 Parma, Italy. Alpine Laboratory of Palaeomagnetism (ALP) Via Madonna dei Boschi 76, 12016 Peveragno (CN), Italy

DOI:

https://doi.org/10.1344/105.000002061

Keywords:

PETM. Southern Central Pyrenees. Isotope geochemistry.

Abstract

The sedimentary record straddling the Paleocene/Eocene boundary in the Ager Basin (southern Central Pyrenees) was investigated by combining facies analysis, sequence stratigraphy and stable isotope data, within an interval characterized by a great variability of depositional environments. The occurrence of the Paleocene-Eocene Thermal Maximum (PETM) climatic anomaly is tentatively constrained by analogy with its stratigraphic range in the adjacent Tremp-Graus Basin. The main body of the carbon isotope excursion associated with the PETM may be recorded by lacustrine carbonates characterized by a ~ -3‰ shift in δ13C with respect to analogous deposits of Thanetian age; a similar shift is recorded between in situ and resedimented pedogenic carbonates, a feature that suggests the partial erosion of the P/E boundary in the Ager Basin.

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2023-10-26

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