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September 10, 2025Paleoceanography and Paleoclimatology

Continuous Sediment Sourcing and Changes in Weathering During the PETM in the Salisbury Embayment

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Authors

WRWilliam RushJZJames C. ZachosTBTerrence Blackburn

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Overview

Observational analysis reveals sediment sourcing shifts and increased weathering during the PETM, indicating climatic impacts.

Key Points

  • Increased kaolinite content suggests heightened weathering during the PETM, influenced by climate changes.
  • Lithium isotope measurements showed a decrease of about 3‰, indicating reduced water-rock interaction time.
  • Strontium and lead isotopes helped establish provenance changes across the late Paleocene and PETM periods.
  • Modeling indicated intensified precipitation extremes at the onset of the PETM, linking climate factors to sedimentary changes.

Cite This Study

Rush et al. (2025) studied this question.

synapsesocial.com/papers/68c18bf99b7b07f3a0614028https://doi.org/10.1029/2025pa005116
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