Search for any geological feature below
–then click on the image to see a larger version in its correct format, a more detailed caption, and an ID number.
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Stream Cobbles Oregon
Ultramafic cobbles in Rough and Ready Creek, drained from the Smith River Terrane of the Western Klamath Belt, Cave Junction, Oregon. (ID: 140119-12t2)
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Fountain Formation, Colorado. (vertical
Pennsylvanian-Permian sandstone of Fountain Formation, Colorado (131024-6)
Download ImageHogbacks of Fountain Formation, Colorado.
Strike valley and hogback eroded into Pennsylvanian-Permian sandstone and conglomerate of Fountain Formation, Colorado (131024-19)
Download ImageFountain Formation, Colorado.
Pennsylvanian-Permian sandstone of Fountain Formation, Colorado (131024-7)
Download ImageMazama Ash overlying basalt, Oregon
Ash from the cataclysmic eruption of Mt. Mazama 7700 years ago (which formed Crater Lake) overlies basalt. (130922-108)
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Lake Abert, Oregon –a pluvial lake
Pluvial lakes are those left from the Pleistocene epoch when the climate was wetter. They are now mostly playa lakes. (130922-16)
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Quarried Cinder Cone, Oregon
LIttle Nash Crater, quarried for its cinders. (130901-9)
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Belknap Shield Volcano, Oregon
2000 year old Yapoah basalt lava flow and Belknap shield volcano, near McKenzie Pass, Oregon. (130825-6)
Download ImageGabbro outcrop, Mary’s Peak, Oregon (vertical)
Gabbro outcrop at top of Mary’s Peak, highest peak in Oregon’s Coast Range. (130914-12)
Download ImageGabbro on Mary’s Peak, Orgon
Gabbro outcrop at top of Mary’s Peak, highest peak in Oregon’s Coast Range. (130914-14)
Download ImageGlacial till and volcanic ash, Oregon
Glacial till and overlying volcanic ash erupted from Mount Mazama, 7700 years ago, Oregon. (130901-17)
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Sea Arch, Oregon
A small sea arch produced by wave erosion along the Oregon Coast. (130428-18)
Download ImageUinta Mountains, Utah
Aerial view of glacial valleys in the Uinta Mountains and Proterozoic Uinta Mountain Group, Utah. (130102-56)
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Sea Arch, Oregon
A small sea arch produced by wave erosion along the Oregon Coast. Devil’s Punchbowl. (130428-33)
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