Aleutian Islands Uplift Revealed | Anchorage News

New research reveals a massive, synchronized geological uplift across the Aleutian Islands 5-7 million years ago — part of a sweeping tectonic shift rippling around the Pacific Rim. By analyzing helium isotopes in rocks, scientists found this event mirrored similar upheavals in California, New Zealand, and Canada, creating a rare global pattern. The stability of the Aleutians since then has preserved their landforms for study, with new work underway to explain why Unalaska’s Shaler Mountains are so unusually tall — offering a unique window into Earth’s hidden power.

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