This is portion of a poster from the US geological survey on the earthquake in Italy on April 6, 2009.
-- Click on the image for the larger version to see the boundary between the Eurasian and African plates. -- The poster text says this earthquake occurred "primarily a response to the Tyrrhenian basin [this basin is west of Italy and east of the islands of Sardinia and Corsica] opening faster than the compression between the Eurasian and African plates." -- For more from USGS, see Natural Hazards--Earthquakes.