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June 11, 2026Quaternary Science AdvancesOpen Access

Alpine speleothem records millennial-scale climate variability during Marine Isotope Stage 10

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Authors

AHAlexandre HoniatCHCharlotte HoniatMLMarc Luetscher

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Overview

Randomized trial documents millennial-scale climate variability in alpine records, indicating broader climate teleconnections.

Key Points

  • This research aims to understand climate dynamics during Marine Isotope Stage 10 through high-resolution speleothem records.
  • Analyzed stalagmite 7H-21 from the Sieben Hengste cave system in the northern European Alps.
  • Used 230Th dating to establish a timeline for climate variability from ∼377 to 340 ka.
  • Documented rapid warming events through isotopic measurements of δ18O.
  • Identified at least six rapid warming events with δ18O excursions of 1-3‰.
  • Growth hiatus between 366 and 357 ka corresponds to Heinrich event 10.3, indicating a response to North Atlantic circulation changes.
  • Isotopic variability showed coherence with Asian Monsoon speleothem records, suggesting hemispheric climate teleconnections.

Cite This Study

Honiat et al. (2026) studied this question.

synapsesocial.com/papers/6a2a4fa380c8f91e7f39c93chttps://doi.org/10.1016/j.qsa.2026.100332
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