Multiple tremors were recorded by the USGS over the past week, including one which struck as the Oscars ceremony was underway.

California has been rocked by at least nine earthquakes since Thursday, raising fears that the "Big One" could be near.

Related: Balanced boulders on San Andreas fault suggest the 'Big One' won't be as destructive as once thought The San Andreas fault marks the boundary ... as the Pacific plate in the west moves ...

A large scale landform found along a conservative plate boundary is a fault line. One of the most active fault lines in the world is the San Andreas fault line in California, USA.

The tiny Juan de Fuca plate is largely responsible ... ridge would then mark the boundary between the plates. Mountains and a rift can be seen along the San Andreas Fault.