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Health & Science2h 29m ago

Scientists have confirmed a rare “impossible” earthquake deep beneath Utah, revealing a hidden source of seismic activity inside Earth’s mantle.

northern Utah, Randolph, Maeser, Uinta Basin, Wyoming, Idaho

Who
George Zandt, Keith Koper, Sean Hutchings, Relu Burlacu, Katherine Whidden, Valerie Springer, Rigobert Tibi, Guanning Pang, Fan-Chi Lin, Qicheng Zeng
What
Scientists have confirmed a rare “impossible” earthquake deep beneath Utah, revealing a hidden source of seismic activity inside Earth’s mantle.
When
Fri, 12 Jun 2026 10:26:31 GMT · 2h 29m ago
Where
northern Utah, Randolph, Maeser, Uinta Basin, Wyoming, Idaho ·
Why
The rare type of earthquake, identified as a continental mantle earthquake (CME), occurs much deeper underground than previously thought possible due to unusual conditions of high temperature and pressure in the Earth's mantle.
The Frontline Impact

How this affects you

This discovery challenges existing understanding of earthquake mechanisms, suggesting that seismic events can occur under conditions previously thought impossible and raising new questions about the maximum size and hazard of these deep mantle quakes.

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  1. Currently Reading2h 29m ago
    Scientists have confirmed a rare “impossible” earthquake deep beneath Utah, revealing a hidden source of seismic activity inside Earth’s mantle.
  2. Health & Science2h 29m ago
    Scientists have confirmed a rare "impossible" earthquake deep beneath Utah, revealing a hidden source of seismic activity inside Earth’s mantle.
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