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Global Positioning System receiver (called a GPS monument) at North Rim Station, a monitoring location at Newberry volcano, Oregon.
Global Positioning System receiver (called a GPS monument) at North Rim Station, a monitoring location at Newberry volcano, Oregon.
USGS scientist meaures how much light is transmitted into the Wallowa River, near Minam, OR.
USGS scientist meaures how much light is transmitted into the Wallowa River, near Minam, OR.
View looking south across Newberry caldera towards the Big Obsidian flow (left of center) and Paulina Peak, with Paulina Lake in foreground. Photo taken from the north rim of the caldera.
View looking south across Newberry caldera towards the Big Obsidian flow (left of center) and Paulina Peak, with Paulina Lake in foreground. Photo taken from the north rim of the caldera.
A view looking northeast across the central caldera of Newberry Volcano. Paulina Lake is in the foreground and East Lake is in the distance. The Central Pumice Cone lies between the two lakes. Near the bottom of the photo at the south edge of Paulina Lake, the two hills are named the Lakeshore Domes.
A view looking northeast across the central caldera of Newberry Volcano. Paulina Lake is in the foreground and East Lake is in the distance. The Central Pumice Cone lies between the two lakes. Near the bottom of the photo at the south edge of Paulina Lake, the two hills are named the Lakeshore Domes.
View of Mount Hood from Pittock Mansion, Portland, OR.
View of Mount Hood from Pittock Mansion, Portland, OR.
Photograph of the Willamette River passing through downtown Portland, OR.
Photograph of the Willamette River passing through downtown Portland, OR.
Rogue River Canyon in southwest Oregon
Rogue River Canyon in southwest Oregon
The green water, caused by massive blooms of Aphanizomenon flos-aquae, as seen in the wake of a boat, is a common sight each summer on Upper Klamath Lake, Oregon. USGS studies how these blooms effect endangered Lost River and shortnose suckers in the lake.
The green water, caused by massive blooms of Aphanizomenon flos-aquae, as seen in the wake of a boat, is a common sight each summer on Upper Klamath Lake, Oregon. USGS studies how these blooms effect endangered Lost River and shortnose suckers in the lake.
Oblique photograph of Knife Ridge monitoring site showing approximate soil pit locations.
Oblique photograph of Knife Ridge monitoring site showing approximate soil pit locations.
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
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.
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
Eruptions in the Cascade Range during the past 4000 years. USGS GIP 64
Adult Oregon spotted frog at Dilman Meadows, near Wickiup Reservoir, OR
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.
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.
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
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.
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.
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.
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.
Mount Jefferson (pointed peak in middle) and Three Sisters (to the right) in Oregon, south-facing aerial view as seen from Mount St. Helens.