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Flooded playa: Alvord Desert, Oregon
Note the mudcracks forming as the water evaporates. (110807-30)
Download ImageSandy beach and headland, Oregon
Washburn State Park, Oregon, a sandy beach along the Pacific Coast. (110910-6)
Download ImageFlooded playa: Alvord Desert, Oregon
Note the mudcracks forming as the water evaporates. (110807-26)
Download ImageSteens Mtn and Alvord Desert; Oregon
Steens Mountain; a tilted fault block or Oregon’s Basin and Range Province, rises above the Alvord Desert, a playa. (110807-45)
Download ImageFolded paleosols and basalt, Oregon
View of Oregon’s Painted Hills at John Day Fossil Beds National Monument. Gently folded paleosols of the Oligocene John Day Formation underlie flat-lying Picture Gorge Basalt, part of the Columbia River Basalt Group.(110805-96)
Download ImageColonnade in basalt, Oregon
Colonnade–columnar jointing– in Picture Gorge Basalt, of the Columbia River Basalt Group, Oregon (110806-17)
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Flooded Playa, Oregon (Pan)
Flooded Alvord Desert, a playa in Oregon’s Basin and Range. (110807-3)
Download ImageEocene Lahar deposits, Clarno Fm., Oregon
Eocene volcanic mudflow, or Lahar, deposits, are an important part of the Eocene Clarno Fm., in Oregon. These pinnacles are “the Palisades” of the Clarno Unit of John Day Fossil Beds National Monument. (110805-73)
Download ImageAngular unconformity, Oregon
Angular unconformity between tilted Oligocene John Day Fm and overlying subhorizontal lava flows of the Columbia River Basalt Group (Picture Gorge Basalt). (110805-90)
Download ImageColonnade in basalt, Oregon (vertical)
Colonnade–columnar jointing– in Picture Gorge Basalt, of the Columbia River Basalt Group, Oregon (110806-16)
Download ImagePaleosols of John Day Formation, Oregon
Oligocene paleosols in John Day Fossil Beds National Monument. (110805-141)
Download ImagePaleosols: John Day Fm, Oregon. (vertical)
Oligocene paleosols in John Day Fossil Beds National Monument. (110805-111)
Download ImageBelknap Shield Volcano, Oregon.
Belknap Shield Volcano is a basaltic volcano of Oregon’s High Cascades.(110805-8)
Download ImagePaleosols of John Day Formation, Oregon.
Oligocene paleosols in John Day Fossil Beds National Monument. (110805-107)
Download ImageCinder cone: Collier Cone, Oregon
Collier Cone is a basaltic cinder cone of the Oregon Cascades. (110730-87)
Download ImageSand blowing off dune, Oregon.
Sand blowing off dune along Oregon’s coast. (110731-21)
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North Sister volcano, Oregon
North Sister, an eroded stratovolcano, Oregon. Middle Sister in background. (110730-70)
Download ImageVolcano and Lava Flow, Oregon (vertical)
North Sister stratovolcano and Lava Flow, Oregon (110730-118)
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