[machogirl]

seismic fault map of the epicenter and surrounding faults. (they are numbered and not many) http://earthquake.usgs.gov/hazards/qfaults/nm/sil.html

[machogirl]

Old Volcanic Field location approx 10-15 miles or so west/sw of epicenter.

https://www.google.com/maps/dir/32.607%C2%B0N+109.151%C2%B0W+/32.5,-109.25/@32.482556,-109.3722639,84631m/data=!3m2!1e3!4b1!4m6!4m5!1m3!2m2!1d-109.151!2d32.607!1m0?hl=en

http://en.wikipedia.org/wiki/Boot_Heel_volcanic_field