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Haiti - Fault Systems

Haiti - Fault Systems Disasters Famous Historical Events Geography STEM World History

This image, from the United States Geological Survey, depicts the two major fault systems which run through Haiti - the Septentrional fault (in the north) and the Enriquillo-Plaintain Garden fault (in the south).

The USGS reports that a 7.0 earthquake, which struck Haiti on the 12th of January, 2010, happened on the southernmost fault:

The location and focal mechanism of the earthquake are consistent with the event having occurred as left-lateral strike slip faulting on the Enriquillo-Plaintain Garden [also referred to as EPGFZ] fault system. This fault system accommodates about 7 mm/y [that is, slippage of about 7 millimeters per year], nearly half the overall motion between the Caribbean plate and North America plate.

The Enriquillo-Plaintain Garden fault system has not produced a major earthquake in recent decades. The EPGFZ is the likely source of historical large earthquakes in 1860, 1770, 1761, 1751, 1684, 1673, and 1618, though none of these has been confirmed in the field as associated with this fault.


Media Credits

Image online, courtesy United States Geological Survey.

Quoted passage online, courtesy USGS.

 

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