Scientists lost in a tangle of fault lines
For free real time breaking news alerts sent straight to your inbox sign up to our breaking news emails Sign up to our free breaking news emails Sign up to our free breaking news emails SIGN UP I would like to be emailed about offers, events and updates from The Independent. They are trying to assess whether ground movements have increased the possibility of the 'Big One' - a giant tremor expected along the huge San Andreas Fault which runs from San Francisco to Los Angeles. The US Geological Survey's National Earthquake Centre in Colorado said the strongest tremor happened 25 miles west of downtown Los Angeles. Yesterday's quake brought two mountain ranges - the Santa Monica and San Gabriel mountains in the San Fernando Valley - slightly closer together, said Jim Mori, a seismologist with the US Geological Survey. The last large earthquake on the southern end of the San Andreas Fault was in 1857, and geological research suggests they have occurred every 150 years over the past 1,500 years.























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