LOS ANGELES, California (Reuters)—California's largest earthquake in four years struck on Monday, causing planet Earth to ring "like a bell" and mountains to grow a foot (30 cm) taller, geologists said.
The magnitude 6.5 quake hit near the coastal city of San Simeon almost exactly half way between San Francisco and Los Angeles, setting high-rise buildings swaying in both cities.
Earthquakes relieve pressure between clashing continental plates. The plates float on the earth's mantle, which has a putty like consistency and moves as the earth's core heats it.
On Monday one piece of crust shoved beneath another about 4.75 miles (7.6 km) beneath the surface of the earth and at the intersection of the Pacific and North American plates, U.S. Geological Survey seismologists said[.]
That sent tremors along America's west coast and beyond.