“Tectonic Summary
Seismotectonics of Mexico
Located atop three of the large tectonic plates, Mexico is one of the world’s most seismologically active regions. The relative motion of these crustal plates causes frequent earthquakes and occasional volcanic eruptions. Most of the Mexican landmass is on the westward moving North American plate.”…
View fill article here: http://earthquake.usgs.gov/earthquakes/eventpage/usb0009jik#summary