Which seismic zone triggered the 2010 Indiana earthquake?
New Madrid Seismic Zone The New Madrid Seismic Zone (pronounced ), sometimes called the New Madrid Fault Line, is a major seismic zone and a prolific source of intraplate earthquakes (earthquakes within a tectonic plate) in the southern and midwestern United States, stretching to the southwest from New Madrid, Missouri.
2003 San Simeon earthquake The 2003 San Simeon earthquake occurred with a moment magnitude of 6.6 on the Central Coast of California, about 7 mi northeast of San Simeon. It occurred at 11:15 PST (19:15 UTC) on December 22. The earthquake probably occurred on the Oceanic fault zone in the Santa Lucia Mountains. It was caused by thrust faulting and propagated southeast from the hypocenter for 12 miles (19 km). The most violent ground movement occurred within 50 miles of the epicenter, though the earthquake was felt as far away as Los Angeles. It was the most destructive earthquake to hit the U.S since the 1994 Northridge earthquake.