Images

Wes Hildreth and Judy Fierstein, seen here in 2009 on the east shore of Sparks Lake near Oregon's South Sister volcano, were longtime field and research partners Their work showed how mapping and understanding geologic field relationships provide an unequaled framework for interpretation of laboratory-generated data; and how well-honed curiosity, acute observat

Rough-skinned newt in defensive posture, EPA ponds, Corvallis, OR. Rough-skinned newts produce a powerful neurotoxin as a defense against predators. 

Eruptions in the Cascade Range during the past 4000 years. USGS GIP 64

Adult Oregon spotted frog at Dilman Meadows, near Wickiup Reservoir, OR

A pine forest with a dirt road running through it in Oregon. Photo taken as a part of field work during the Land Cover Trends project.

Radially dipping strata of the cone include subequal proportions of lava flows and flow breccias and of proximal agglutinate and scoria falls, nearly all having 54 to 56 percent SiO2. Numerous mafic dikes and sills intrude the cone, and an apron of compositionally similar mafic lavas extends far outward from the cone.

Crooked River of the Deschutes River Basin, Oregon, flows through Smith Rocks 

Wildfire is one of the largest sources of re-released mercury to the atmosphere and a component to the widespread movement of inorganic mercury to aquatic sediments.

Controlled burn at Hart Mountain National Wildlife Refuge, Oregon.

Fish biologist with Shortnose sucker

Researcher from Klamath Falls Field Station downloading data during a flood on the Williamson River Oregon.

Mount Jefferson (pointed peak in middle) and Three Sisters (to the right) in Oregon, south-facing aerial view as seen from Mount St. Helens.

Global Positioning System receiver (dome on pole) and seismometer (box on ground in distance) at a volcano monitoring station for Three Sisters in Central Oregon. Solar panel mounted to pole.

Juvenile Chinook salmon monitoring below the The Dalles Dam on the Columbia River.

Roaring Spring on the McKenzie River, Oregon

Sagebrush-dominated ecoregions in the western United States (sagebrush cover types shown in various shades of yellow, pink, and blue-grey).

During Ocean Drilling Program Leg 204, nine sites were cored and wireline logged on the Oregon continental margin to determine the distribution and concentration of gas hydrates in an accretionary ridge setting, investigate the mechanisms that transport methane and other gases into the gas hydrate stability zone, and obtain constraints on physical properties of

(Top) 1996–2000 interferogram draped over a 30-m DEM and showing uplift centered a few kilometers (miles) west of South Sister volcano. (Bottom) Geochemical data on top of the 1996–2000 interferogram. The columns show chloride (Cl) and sulfate (SO4) concentrations at sampled springs.

Large-scale poster describing USGS work.

The USGS mapped Crater Lake, Oregon using sonar, in cooperation with the National Park Service, the University of New Hampshire, and C&C Technologies.

Corbicula sampling in the Bonneville Pool, Columbia River.

USGS scientist collecting samples at Crater Lake, Oregon.