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140710-15
Columbia River Gorge, view upriver towards north edge of Oregon. Outcrop in foreground is part of 57,000 year old Beacon Rock. 5(140710-15)
Download ImageWindsurfers in Columbia Gorge, WA-OR
Windsurfers in Columbia Gorge, WA-OR (140710-32)
Download ImageColumbia River Gorge, Oregon-Washington
Columbia River Gorge, view upriver towards north edge of Oregon. (140710-11)
Download ImageWindsurfers in Columbia Gorge, WA-OR
Windsurfers in Columbia Gorge, WA-OR (140710-32)
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Eroded volcanic neck, Oregon
Mt. Thielsen and volcaniclastic deposits, Oregon High Cascades. Mt. Thielson is the eroded neck of an extinct shield volcano. (140703-70)
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Eroded volcanic neck, Oregon
Mt. Thielsen is the eroded neck of an extinct shield volcano. (140703-87)
Download ImageBase of Mt. Mazama, Oregon
View southward from Mt. Thielson to Crater Lake caldera and base of Mt. Mazama, Oregon Cascades. (140703-29)
Download ImageMeander bend and point bar, Oregon
Meander bend and point bar along North Umpqua River, Oregon. (140703-120)
Download ImageDiamond Lake and Mt. Bailey, Oregon
Oregon High Cascade range. Diamond Lake and Mt. Bailey, Oregon (140703-44)
Download Imagepillow basalt of Siletzia -an accreted terrane
pillow basalt of Siletzia -an accreted terrane in Oregon and Washington. This photo is near Roseburg, Oregon. (140703-116)
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Pluvial lake –Lake Abert, Oregon
A pluvial lake in Oregon’s Basin and Range, Lake Abert periodically dries and floods, leaving behind a playa covered with evaporite minerals. (140621-79)
Download ImagePumice fragments
Pumice fragments, erupted during the caldera-forming eruption of Mt. Mazama, Oregon. (140622-13)
Download ImageAsh flow tuff, Oregon
Roadcut of Ash flow tuff, erupted during the caldera-forming eruption of Mt. Mazama 7700 years ago, Oregon. (140703-104)
Download ImagePumice fragments
Pumice fragments, erupted during the caldera-forming eruption of Mt. Mazama, Oregon. (140622-14)
Download ImageAsh flow tuff, Oregon (pan)
Roadcut of Ash flow tuff, erupted during the caldera-forming eruption of Mt. Mazama 7700 years ago, Oregon. (140703-101)
Download ImagePlaya Lake and fault scarp, Oregon
Lake Abert in SE Oregon borders a normal fault that uplifts Abert Rim. The pluvial lake periodically dries to leave behind salt deposits. (140621-64)
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