USGS Multimedia Gallery for Set: 1999 Hector Mine Earthquake

http://gallery.usgs.gov/images/logos/usgs_only.jpg USGS Multimedia Gallery for Set: 1999 Hector Mine Earthquake http://gallery.usgs.gov/ en-us OC_Web@usgs.gov (Office of Communications Web Group) http://gallery.usgs.gov/images/USGS.gif USGS http://gallery.usgs.gov/ <![CDATA[No description.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_0 <![CDATA[No description.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_1 <![CDATA[No description.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_2 <![CDATA[No description.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_3 <![CDATA[No description.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_4 <![CDATA[No description.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_5 <![CDATA[No description.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_6 <![CDATA[Looking towards NW across Lavic Lake, rupture passing from lower right, stepping out toward upper left; NW end of the surface rupture is in the distance on the far side of Lavic Lake.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_7 <![CDATA[Cracks on far side of wash; called 'en-echelon' breaks where they step sideways.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_8 <![CDATA[Splaying of fractures viewed from above.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_9 <![CDATA[Southeast of maximum displacement site. Here we see 3-4 meters of right-lateral slip have offset a ridge and created a 'shutter' ridge blocking flow in the dry creek channel. The white vertical surface is the fault scarp.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_10 <![CDATA[Fractures crossing a wash.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_11 <![CDATA[View right along the main rupture zone, and also visible is a subsidiary fracture from lower-right corner coalescing with the main break in the middle distance.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_12 <![CDATA[View downward onto vehicle tracks crossing the fault at a high angle. One can see 2.5 to 3.5 meeter right-lateral displacement of the tracks.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_13 <![CDATA[Fracture running along hillside in low-relief topography with offset gullies and tracks.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_14 <![CDATA[Ground view along surface rupture, showing the fracturing of the soil and how pieces have been pushed up within the fault zone.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_15 <![CDATA[Subparallel breaks coalesce on face of hill (in shadow) and form a single rupture heading off to the upper left.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_16 <![CDATA[Downward view onto gullies, gravel bar, and other laterally offset features. Here slip appears to be about 2 meters.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_17 <![CDATA[Rupture cutting across the countryside in loose alluvium.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_18 <![CDATA[Breaks cutting alluvium, nicely lit.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_19 <![CDATA[View downward onto site with maximum observed lateral displacement along the Lavic Lake fault. Here a vehicle track and dry creek bed are laterally offset by approx. 370-480 centimeters. The orientation of fractures here is nearly North-South. Compression locally across the fault pushed up a 'mole track' where the fault breaks the dirt road at the right side of the photo.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_20 <![CDATA[Fracture cutting across the countryside.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_21 <![CDATA[Fracture cutting across the countryside (left to right) such that the fault scarp is lit up by the sun, appearing as a bold white line.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_22 <![CDATA['Mole track' at the max. slip site from the ground.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_23 <![CDATA[View towards south across Lavic Lake, with the surface rupture running from lower right to upper left. In the middle distance on the right is an ancient lava flow.]]> http://gallery.usgs.gov/photos/h41Ogs6FEa_24