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Deformed 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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Beach Rills showing headward erosion
Beach Rills in sand showing headward erosion (1983-01SedM-02-1)
Download ImageElk River, North Carolina
Elk River and boulders of Precambrian Grandfather Formation. Blue Ridge Province of Appalachian Mountains. (171118-100)
Download ImageDeformed metaconglomerate (vertical)
Stretched pebble conglomerate of the Precambrian Grandfather Mountain Formation, North Carolina. Photo shows planes parallel and perpendicular to foliation (xy and xz planes of strain ellipsoid). Blue Ridge Province of Appalachian Mountains. (171118-96)
Download ImageDeformed metaconglomerate
Stretched pebble conglomerate of the Precambrian Grandfather Mountain Formation, North Carolina. Blue Ridge Province of Appalachian Mountains. (171118-94)
Download ImageElk River, North Carolina
Elk River and boulders of Precambrian Grandfather Formation. Blue Ridge Province of Appalachian Mountains. (171118-90)
Download ImageBedding and foliation
Bedding and foliation in deformed metaconglomerate. Stretched pebbles lay in the plane of foliation whereas bedding is defined by the subhorizontal fine-grained zone in the middle of the photo. Grandfather Mountain Formation, North Carolina. Blue Ridge Province of Appalachian Mountains. (171118-88)
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