For most people, earthquakes are something that happens relatively close to the Earth's surface. They break through the crust, shake towns and cities, and leave behind faults that geologists can map.
A modest earthquake recorded beneath northern Utah in 1979 has turned out to be far more unusual than anyone first realized. New research suggests the tremor originated deep in the Earth’s upper ...
The tiny town of Randolph, Utah (population: 467), sat atop a deep 3.8 magnitude earthquake in the early morning hours of February 24, 1979—but, mysteriously, none of its residents noticed enough to ...