Phanerozoic orbital-scale glacio-eustatic variability

doi:10.1016/j.epsl.2025.119526

Phanerozoic orbital-scale glacio-eustatic variability

2025-07-03

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D

Douwe G. van der Meer

L

Lennert B. Stap

C

Christopher R. Scotese

Douwe J.J. van Hinsbergen

DOI：10.1016/j.epsl.2025.119526

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• We present the first reconstruction of sea level change during the last 540 million years due to the waxing and waning of the Earth’s polar icecaps. • Long-term reconstructions of sea level fail to capture short-term, high-amplitude fluctuations—especially those driven by glacio-eustasy during icehouse periods. • The study uses a high-resolution Cenozoic climate model and long term Phanerozoic ice volumes to estimate orbital-scale sea level variability over the past 540 million years. • Greenhouse climates like the Jurassic and Cretaceous saw reduced or absent glacial sea level fluctuations, in contrast to short term changes >100 meters during the Paleozoic and Cenozoic. • Sea level estimates during greenhouse periods may have been overstated by stratigraphic methods, or result from other causes than glacio-eustasy.

Phanerozoic orbital-scale glacio-eustatic variability

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