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December 11, 2025GeologyOpen Access

Lithium isotopes reveal enhanced weathering fluxes in North America during the Paleocene−Eocene Thermal Maximum

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Authors

RJRocio Jaimes‐GutierrezLVLucas VimpereDWDavid J. Wilson

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Overview

Analysis reveals significant changes in sediment core lithium isotopes, indicating rapid weathering and CO2 drawdown during the PETM.

Key Points

  • This research aims to understand the changes in weathering regimes and rates during the Paleocene−Eocene Thermal Maximum.
  • Measured lithium isotope composition in a deep-marine sediment core
  • Analyzed neodymium isotopes for sediment provenance
  • Tracked changes in clay mineral formation
  • Detected a buffered negative δ7Li excursion during the PETM body
  • Observed a stronger negative δ7Li excursion during the recovery phase
  • Indicated rapid propagation of enhanced weathering and erosion fluxes contributing to CO2 drawdown

Cite This Study

Jaimes‐Gutierrez et al. (2025) studied this question.

synapsesocial.com/papers/69401b1e2d562116f28f76echttps://doi.org/10.1130/g53708.1
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