The November 25, 2013 M 7.0 earthquake (06:27:33 UTC) southwest of the
Falkland Islands in the South Atlantic Ocean occurred as the result of
strike slip faulting, on either a left-lateral fault striking ENE-WSW,
or a right-lateral structure striking NNW-SSE.
The location of the earthquake, near the ENE-WSW trending plate boundary
between the South America and Scotia tectonic plates, suggests it is likely
associated with left-lateral faulting along this margin. At the location of
this earthquake, the Scotia plate moves ENE with respect to South America at
the rate of approximately 9.5 mm/yr. The November 25, 06:27:33 earthquake was
the largest of 5 M 5+ events that occurred in a similar area over an approximate
2-hour period, including a M 5.6 earthquake 24 seconds prior to the M 7.0 mainshock.