Earlier reports suggested there had been two strong earthquakes moments apart in the same area, but the USGS later clarified that there had been just one quake.
The last truly big quake on the southern section of the San Andreas Fault was a rupture of 7.9 magnitude in 1857, when only a few thousand people lived in Los Angeles.
3
亚欧地震带只有中国包头发生一次6级地震。
In the Eurasian seismic belt, only one earthquake of M 6 occurred in Baotou, China.
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