Cocooned within the bowels of the Earth, one mineral’s metamorphosis into another may trigger some of the deepest earthquakes ever detected. These cryptic tremors — known as deep-focus ...

A research team utilized teleseismic double-difference tomography technology to uncover the morphological changes of the ...

Earthquakes which occur at depths of several hundred kilometers in the mantle are called “deep-focus earthquakes”. Such earthquakes occasionally result in serious disasters such as the 1994 ...

Two earthquakes of the same magnitude can cause varying degrees of damage to infrastructure. A deep focal source is expected to inflict less damage than a shallow one. At 10:19 this morning ...

The cause of deep-focus earthquakes, however, has been a mystery, because earthquakes occur with the rapid sliding of a fault, which is difficult under the great pressures of the deep mantle ...