Sunday, December 11, 2011 12:38:58 UTC (GMT)
Sunday, December 11, 2011 08:38:58 PM local time at epicenter
Earthquake initial reports at a depth of 20.90 km (12.99 mi)
Read the United States Geological Survey’s full report on this earthquake activity at M 4.6, Gansu-Qinghai border region, China. An important part of the USGS mission is to maintain and improve comprehensive earthquake monitoring in the United States with focus on “real-time” systems. The earthquake information above is preliminary and this event may not yet have been reviewed by a seismologist.