It would be interesting to go look for surface rupture in the area, earthquakes don't occur all that often in northeastern Nevada. (bummer to be in a mine shaft in elko when it happened I bet) We are still within the window (next 3 or 4 days) for this to be a part of a larger event.
below is usgs stuff
The seismological data from this earthquake show that it occurred on a normal fault that trends roughly north-south and has a dip of 30-60 degrees. Based on the location, depth, trend of fault, and proximity to mapped active faults, the earthquake likely occurred on the west-dipping Independence Valley fault system. The fault zone bounds the western margin of the Pequop Mountains, which are located about 30 km east of Wells, Nevada. The entire fault system is approximately 64 km long and consists of a zone of subparallel range-front normal faults.
The most recent surface rupture on the Independence Valley fault zone likely occurred several tens of thousands of years ago. Independence Valley, which lies to the west of the fault, was filled by Lake Clover during the time of the last major glacial advance about 15-20,000 years ago. The fault does not cut the highest shorelines of this lake, which indicates that the most recent movement on the fault predates the lake. In addition, a recent geological study to investigate the history of fault movements estimated that the most recent large earthquake that caused surface rupture occurred at least 42,000 years ago (Wesnousky and others, 2005). Smaller earthquakes that didn't rupture the ground surface likely have occurred more frequently on the Independence Valley fault zone.
Earthquakes in Nevada are not uncommon. One of the most significant sequences of earthquakes in the western U.S. occurred in Nevada during the first half of the 20th century. The sequence started in 1915, when a magnitude 7.3 earthquake occurred in Pleasant Valley south of Winnemucca. The sequence culminated with a series of four major earthquakes that ranged in magnitude between 6.6 to 7.1 in 1954 the vicinity of the Carson Sink and Dixie Valley. This sequence of earthquakes defines the Central Nevada Seismic Belt.
The geologic expression and studies of the Independence Valley fault zone indicate a relatively low long-term rate of activity, but this event demonstrates that the fault remains active and has the potential to generate larger earthquakes. It is noteworthy that the geologic expression of this range-front fault is similar to hundreds of other faults throughout the Basin and Range Province of the western United States.
http://earthquake.usgs.gov/eqcenter/eqi ... 9/#summary