Today’s Earthquake Fact
An earthquake is caused by the shaking of the ground due to an abrupt shift of rock along a fracture in the Earth, called a fault. Within seconds, an earthquake releases stress that has slowly accumulated within the rock, sometimes over hundreds of years. Most earthquakes are caused by slow movements deep in the Earth that push against the Earth's brittle, relatively thin outer layer, causing the rocks to break suddenly.
Today in Earthquake History
December 21, 1967
M 7.5, Chile – The shock caused one death and several injuries, and inflicted severe property damage at Quillagua and Tocopilla, two small villages near the earthquake's epicenter.… Read More