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Contact between basaltic lava flows, Washington
Contact between lava flows of the Grande Ronde Basalt (Columbia River Basalt Group), Washington. (150804-47)
Download ImageMoses Coulee, Washington (Pan)
Moses Coulee, Washington, formed by erosion by the Missoula (Ice Age) Floods. (150804-44)
Download ImageRills forming mini-badlands in loess
Erosion of windblown loess forming rills and mini-badlands, northern Washington (150804-14)
Download ImageRecumbently folded calc-silicate gneiss
Recumbently folded calc-silicate gneiss near Kettle Falls, Washington (150803-77)
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Mylonitic front of Okanogan Core Complex
Mylonitic foliation along front of Okanogan Metamorphic Core Complex, near Tonasket, Washington (150803-49)
Download ImageDeformed dike in mylonite
Folded felsic dike in mylonitic rock–indicates deformation continued after intrusion. Okanogan Metamorphic Core Complex, Washington. (150803-47)
Download ImageDeformed dike in mylonite
Folded felsic dike in mylonitic rock–indicates deformation continued after intrusion. Okanogan Metamorphic Core Complex, Washington. (150803-46)
Download ImageGlacial-fed lake, Diablo Lake, Washington
Turquoise-colored lake from suspended glacial sediment. Diablo Lake, North Cascades National Park, Washington. (150802-24)
Download ImageSkagit Gneiss migmatite, Washington
Outcrop of Skagit Gneiss migmatite of North Cascades National Park, Washington. (150802-18)
Download ImageSkagit Gneiss migmatite (vertical)
Outcrop of Skagit Gneiss migmatite of North Cascades National Park, Washington. (150802-17)
Download ImageWetlands on Nisqually Delta, Washington
Wetlands on Nisqually Delta, Nisqually National Wildlife Area, Washington (150801-51)
Download ImageMt. St. Helens stratovolcano, Washington
View of Mt. St. Helens stratovolcano from near Johnston Ridge Observatory, Washington. Photo shows the crater, lava dome, and devastation area from the 1980 eruption. (150801-27)
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Sunrise, Sierra Nevada, California (Pan)
Winter sunrise on the Sierra Nevada Range near Independence, California (110101-23)
Download ImageSwitchbacks on Cedar Mesa, Utah
Switchbacks on road as it climbs up Cedar Mesa from valley floor, Utah. (090322-2)
Download ImageErosional remnants, Monument Valley, Arizona (Pan)
Sandstone monoliths, Monument Valley, Arizona. Cliff-forming rock is Permian De Chelly Sandstone (eolian); slope-former is Permian Organ Rock Shale. (090321-64)
Download ImageSandstone tower, Arizona (vertical)
Erosional remnant showing effects of differential weathering and erosion, Monument Valley, AZ. Cliff-forming rock is Permian De Chelly Sandstone (eolian); slope-former is Permian Organ Rock Shale. (090321-55f)
Download ImageTalus cones and Cedar Mesa, Utah
Talus cones and eastern edge of Cedar Mesa, Utah. Rock is the Permian Cedar Mesa Sandstone (090321-2)
Download ImageRecent rock avalanche
Recent rock avalanche from cliffs of Jurassic Wingate Sandstone, SE Utah (090317-43)
Download ImagePetroglyphs.
Petroglyphs on sandstone coated with desert varnish. Newspaper Rock, SE Utah. (090317-38)
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