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Obsidian outcrop.
Big Obsidian Flow, Newberry Volcano, Oregon. This rhyolite obsidian flow is 1300 years old. (120625-82)
Download ImageTerminus of obsidian Flow. Oregon.
Terminus of obsidian Flow. Big Obsidian Flow, Newberry Volcano, Oregon. This rhyolite obsidian flow is 1300 years old. (120625-83)
Download ImageEroded sedimentary rock, SE Oregon.
Eroded lake river deposits, SE Oregon. The “Pillars of Rome”. (120624-18)
Download ImageCrack-in-the-ground, Oregon.
Crack-in-the-ground, a fissure developed along a normal fault in central Oregon. (120625-114)
Download ImageWaterfalls over welded tuff, Oregon
Waterfalls over welded tuff, Paulina Falls, Newberry Volcano, Oregon. ( (120625-29)
Download Imageflow banding in obsidian
flow banding in obsidian, Big Obsidian Flow, Newberry Volcano, Oregon. (120625-66)
Download ImageCrater of Cinder Cone, Newberry Volcano, Oregon.
Crater of Cinder Cone (Lava Butte), Newberry Volcano, Oregon. The shield volcano of Newberry Volcano is in the background; red cinders are in the foreground. (120625-14)
Download ImageCinder Cone, central Oregon.
Cinder Cone of the Chain of Craters, central Oregon. (120625-100)
Download ImageCinder cone and aa basalt, Oregon.
Cinder cone and aa lava flow, Newberry Volcano, Oregon. (120625-18)
Download ImageEroded lake and river deposits, SE Oregon.
Eroded lake river deposits, SE Oregon. The “Pillars of Rome”. (120624-20)
Download ImageHells Canyon, Oregon,Idaho.
Hells Canyon, Oregon, Idaho. View eastward into Idaho. (120623-31)
Download Imagehorizontally oriented dike, Oregon
horizontally oriented basaltic dike, cutting through vertically dipping limestone, SE Oregon. (120623-59)
Download ImageBasalt flows, Imnaha Canyon, Oregon
Basalt flows of the Columbia River Basalt Group, Imnaha Canyon, Oregon. (120623-22)
Download ImageSeven Devils range, Idaho
Seven Devils range, Idaho, part of Wrangellia, an accreted terrane. (120623-61)
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Glacial erratic, Oregon
Glacial erratic, deposited in the Willamette Valley of western Oregon by the Late Pleistocene Missoula Floods. Rock is part of the Proterozoic Belt Supergroup. (120527-10)
Download ImageJohn Day River and Sheep Rock, Oregon.
John Day River and Oligocene John Day Formation, at Sheep Rock, Oregon. The cap rock is Picture Gorge Basalt of the Columbia River Basalt Group.
Download ImageHells Canyon, Oregon/Idaho.
Hells Canyon, Oregon-Idaho, view northward. Lava flows of the Columbia River Basalt Group are in the foreground (Oregon side).
Download ImageMangrove swamps, Florida Gulf Coast
Mangrove swamps, tidal channels, and Aerial view of sediment-laden water along coastline, SW Florida. (120326-8
Download ImagePossible Tsunami Deposit, Oregon Coast
Beach cliff revealing exposure of fine sand, likely deposited by the 1700 tsunami event in Oregon. (120527-33)
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