The Motagua Fault (also, Motagua Fault Zone) is a major, active left lateral-moving transform fault which cuts across Guatemala, continuing offshore along the southern Pacific coast of Mexico, returning onshore along the southernmost tip of Oaxaca, then continuing offshore until it merges with the Middle America Trench near Acapulco. It forms part of the tectonic boundary between the North American Plate and the Caribbean Plate. It is considered the onshore continuation of the Cayman Trench which runs under the Caribbean Sea.
The Motagua Fault is regarded by some geologists as part of a system of faults designated the "Motagua-Polochic system" rather than as a discrete single boundary. The Polochic fault (also referred to as the Chixoy-Polochic Fault) lies north and parallel to the Motagua Fault and shares some of the motion between the North American and Caribbean Plates.
The Motagua Fault has been responsible for several major earthquakes in Guatemala's history, including the 7.5 Mw Guatemala 1976 earthquake.
Famous quotes containing the word fault:
“How utterly futile debauchery seems once it has been accomplished, and what ashes of disgust it leaves in the soul! The pity of it is that the soul outlives the body, or in other words that impression judges sensation and that one thinks about and finds fault with the pleasure one has taken.”
—Edmond De Goncourt (1822–1896)