Scientists confirm a deep earthquake that shouldn't exist

A groundbreaking discovery in Utah has revealed that an earthquake initially detected in 1979 happened nearly 90 kilometers underground, much deeper than typical continental quakes. This discovery, made by reanalyzing decades of seismic data, identifies a rare type of "continental mantle earthquake" occurring where scientists expected rock to flow slowly instead of breaking suddenly. This finding challenges existing geological models and could have significant implications for understanding Earth's internal processes and the dynamics of deep-earthquake zones.