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Sand Hills, Nebraska (vertical)
Aerial view northward over stabilized sand dunes, Sand Hills, Nebraska (210219-35)
Download ImageSand Hills, Nebraska
Aerial view northward over stabilized sand dunes, Sand Hills, Nebraska (210219-34)
Download ImageSand Hills, Nebraska
Aerial view of stabilized sand dunes, Sand Hills, Nebraska (210219-33)
Download ImageSand Hills, Nebraska (vertical)
Aerial view of stabilized sand dunes, Sand Hills, Nebraska (210219-32)
Download ImageDendritic drainage pattern, Wyoming
Aerial view of dendritic drainage pattern and watershed, Wyoming (210219-26)
Download ImageMount Index, Washington
Aerial view of snow-covered Mt. Index, Washington. (210219-13)
Download ImageAlki Point, West Seattle, WA
Aerial view of. Alki Point, West Seattle, Washingon. The hill that makes up West Seattle is a glacial drumlin. Duwamish River in background. (210219-2)
Download ImageWillamette Valley, Oregon
Aerial view of the Willamette River and its floodplain in Oregon’s Willamette Valley, a forearc basin. Note the oxbow lake and abandoned river channels. Albany, Oregon in the left middleground; Cascade Volcanoes in the background. (210224-234) fore-arc
Download ImageConjugate thrust faults
Small-scale conjugate thrust faults in vertically dipping clastic sedimentary rock (0518-13)
Download ImageQuartz crystals filling open vein in quartzite
Euhedral quartz crystals filling open vein in Precambrian Baraboo Quartzite, Wisconsin. Penny for scale. (210401-22)
Download ImageSnake River and basalt, Idaho.
Snake River and Quaternary basalt of Snake River Plain Twin Falls, Idaho (170518-8)
Download ImageSheeting joints in granitic rock, California
Sheeting (unloading) joints in granodiorite, Yosemite National Park, California (SrF-49-4512-75) fractures
Download ImageClouds, beach, and coastal dunes, Oregon
Clouds, beach, swash zone, and coastal dunes, Oregon (IP2103-1196)
Download ImageMeander Loop, Tahkenitch Creek, Oregon
Meander Loop in coastal dunes, Tahkenitch Creek, Oregon (IP2103-1193)
Download ImageSwash zone and coastal dunes, Oregon
HIker and dogs on lonely Oregon beach, showing the swash zone, beach, and coastal dunes, (210320-24)
Download ImageImbricate thrust faults, Montana
Imbricate thrust faults: duplication of light-brown shale of the Triassic Lower Dinwoody Formation over the darker-brown ledges of the Upper Dinwoody, SW Montana (130727-62)
Download ImageOverturned folds in limestone, Montana (Pan)
Panorama of overturned folds in Triassic limestone of the Dinwoody Formation, SW Montana (190713-23)
Download ImageStromatolites in dolomite, Montana
Proterozoic stromatolites exposed on bedding surface of Helena Dolomite, Glacier National Park, Montana. Note the glacial striations. (150713-95)
Download ImageCirque and tarn, Glacier NP, Montana
Upper Grinnell Lake perched on tilted ledges of Proterozoic Helena Dolomite in Glacier National Park, Montana. (150713-82)
Download ImageStromatolites in dolomite, MT (Vertical)
Proterozoic stromatolites exposed on bedding surface of Helena Dolomite in cirque of Grinnell Glacier, Glacier National Park, Montana. Note the Purcell sill in the glacial headwall in the background. (150713-52)
Download ImageIcebergs on glacial lake, Glacier NP, Montana
Icebergs on Upper Grinnell Lake, a tarn in the cirque of Grinnell Glacier, Glacier National Park, Montana. Salamander Glacier forms the elongate snowfield above the lake. The bedrock in the foreground and behind the waterfall consists of Proterozoic Helena Dolomite. (150713-50)
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