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Cretaceous conglomerate, Montana
Conglomerate of the Cretaceous Kootenai Formation, SW Montana. (3528-38)
Download ImageRecycled Cretaceous pebbles, Montana.
“Recycled” pebbles. These pebbles weathered out of a conglomerate at the base of the Cretaceous Kootenai Formation, SW Montana. (151209-4)
Download ImageTilted Paleozoic rock, CA (Pan)
Hiker and tilted Paleozoic rock, Death Valley National Park, California.
Download ImagePegmatite intruding Gneiss
Pegmatite intruding Precambrian Gneiss as a dike (left side) and sill (middle). Death Valley National Park, California. Ig-08.
Download ImageDeath Valley Salt Pan at Sunrise
Death Valley’s salt flats and teepee structure. Most of the salt is haltite, although other evaportie minerals are present along the edges. (5D-1325)
Download Imageimpinging grains: dissolution creep
cobbles, impinging into each other because of dissolution creep (pressure solution). Stars on right photo show locations.
Download Imageslabs of polished rock for countertops
slabs of polished rock at a “granite” warehouse (150218-50)
Download Imagemetamorphosed conglomerate (pan)
Polished conglomerate –individual cobbles are metamorphic rocks. The green color comes from the mineral chlorite. (150218-44-2)
Download Imagemetamorphosed conglomerate
Close-up view of metaconglomerate. Green color comes from the metamorphic mineral, chlorite. Note impinging grains from dissolution creep. (150218-40-2)
Download ImageHaystack Rock, Cannon Beach, OR
Haystack Rock, a sea stack of Columbia River Basalt Group at Cannon Beach, Oregon coast. (130121-12)
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Silver Falls State Park, Oregon
Upper North Falls at Silver Falls State Park, Oregon. The roof of the alcove consists of Wanapum Basalt, the bedrock near the river channel consists of Grande Ronde Basalt. (150119-7F)
Download ImageCRBG and Mt. Adams
Lava flows of the Columbia River Basalt Group in northern Oregon and Mt. Adams of southern Washington. (140711-47-2)
Download ImageColumbia River Basalt Group, Oregon
Basalt flows of the Columbia River Basalt Group, Imnaha Canyon, (120623-22)
Download ImageColumbia River near Portland, Oregon
Aerial view northward, down the Columbia River.(150101-240
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Aerial view over the Columbia River Gorge to the Washington High Cascade Volcanoes. left to right: Mt. St. Helens, Mt. Rainier, Mt. Adams. (150101-216)
Download ImageCascade Volcanoes
Aerial view north over the Dalles to Mts. St Helens, Rainier, and Adams.(150101-201)
Download ImageNorth front of Wallowa Mountains, Oregon
Glacial valleys and frontal fault zone on the north side of the Wallowa Mountains, Oregon.(150101-167)
Download ImageHell’s Canyon and Snake River, OR-ID
Aerial view of Hell’s Canyon and the Snake River, Oregon, Idaho. (150101-152)
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Recent faulting, Idaho
Aerial view of recent faulting along western edge of Lemhi Range, Idaho. (150101-120)
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