Images

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.

'Mole track' at the max. slip site from the ground.

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.

'Apparent' vertical displacement and scarps caused by mainly lateral slip.

Fracture running along hillside in low-relief topography with offset gullies and tracks.

Ground view along surface rupture, showing the fracturing of the soil and how pieces have been pushed up within the fault zone.

Subparallel breaks coalesce on face of hill (in shadow) and form a single rupture heading off to the upper left.

Downward view onto gullies, gravel bar, and other laterally offset features. Here slip appears to be about 2 meters.

Rupture cutting across the countryside in loose alluvium.

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.

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.

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.

This is a false-color-composite satellite image, Great Salt Lake, Sept 1999. Vegetation appears red.

The south area of the La Honda oil field, California, was discovered during the late 1950s and produced an estimated 595,000 barrels of oil from about 12 wells, including the well in this photo.

An earthquake along a subduction zone happens when the leading edge of the overriding plate breaks free and springs seaward, raising the sea floor and the water above it. This uplift starts a tsunami. Meanwhile, the bulge behind the leading edge collapses, thinning the plate and lowering coastal areas.

U.S. Geological Survey streamflow-gaging station 08028500 Sabine River near Bon Wier, Texas, photograph looking from left bank adjacent to U.S. Highway 190 bridge, May 30, 1999.

SIR 2009–5174

U.S. Geological Survey (USGS) scientists conducted a unique study, which demonstrated that the ecology of natural groundwater bacteria changed after exposure of the bacteria to the antibiotic sulfamethoxazole (SMX).

Aerial view of Assateague Island, looking north. Ocean City, Maryland, is visible in the far distance at top. Sinepuxent Bay lies between the island’s western shore and the Delmarva Peninsula to the upper left. Photograph taken in 1998 

Grant Glacier - 1998

Large-scale poster describing USGS work.

The USGS mapped western San Francisco Bay using sonar, in cooperation with the National Oceanic and Atmospheric Administration (NOAA) and C&C Technologies. Some parts of the Bay floor are so shallow that a large tanker or container ship could run aground at low tide and create a massive oil spill.

One of 1,695 repeat photographs taken to provide context for the classification of the Central Mojave Desert into various vegetation classes.