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Scientists confirm a deep earthquake that shouldn’t exist

SD·17h ago·3 min read
Photograph via Science Daily
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Scientists have confirmed that a mysterious Utah earthquake first detected in 1979 really did occur nearly 90 kilometers underground—far deeper than anyone thought earthquakes could happen beneath a continent. By reanalyzing decades of seismic data, researchers identified a rare class of "continental mantle earthquakes" occurring deep in Earth’s upper mantle, where rock is expected to slowly flow rather than suddenly break.

Scientists have confirmed that a mysterious Utah earthquake first detected in 1979 really did occur nearly 90 kilometers underground—far deeper than anyone thought earthquakes could happen beneath a continent. By reanalyzing decades of seismic data, researchers identified a rare class of "continental mantle earthquakes" occurring deep in Earth’s upper mantle, where rock is expected to…

Scientists have confirmed that a mysterious Utah earthquake first detected in 1979 really did occur nearly 90 kilometers underground—far deeper than anyone thought earthquakes could happen beneath a continent. By reanalyzing decades of seismic data, researchers identified a rare class of "continental mantle earthquakes" occurring deep in Earth’s upper mantle, where rock is expected to slowly flow rather than suddenly break.

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