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Glacial till and Canadian Rockies
Glacial till and Valley of the Ten Peaks, Banff National Park, Alberta, Canada. Peaks in the background consist of Cambrian Gog Quartzite. (ID: 120707-15)
Download ImageGlacier on top Mt. Temple
Glacier on top Mt. Temple, Banff National Park, Alberta, Canada. (ID: 120707-102)
Download ImageCrown Point and Columbia River Gorge, Oregon
Crown Point, Oregon, Columbia River Gorge, and cliffs of Grande Ronde Basalt of the Columbia River Basalt Group. (120703-35)
Download ImageRadial fibers of Thompsonite, a zeolite.
Radial fibers of Thompsonite, a zeolite mineral. (120703-40)
Download ImageCalifornia-Oregon Border.
Goose Lake and California-Oregon Border. (the fence is the border) (120626-64)
Download ImageMultnomah Falls, Oregon. (vertical)
Bridge and Multnomah Falls, Oregon. Multnomah falls is Oregon’s highest waterfall. (120703-14)
Download ImageOutcrop of ash flow tuff, southern Oregon.
Outcrop of welded ash flow tuff, southern Oregon. (120626-86)
Download ImageAsh flow tuff, Crater Lake, Oregon.
Ash flow tuff, eroded into pinnacles. The tuff was erupted during Mt. Mazama’s cataclysmic eruption 7700 years ago. Crater Lake National Park, Oregon. (120626-96)
Download ImageBasaltic dikes, western Cascades, Oregon
Basaltic dikes cutting older volcanic rock of the western Cascades. (120627-77)
Download ImageLake Abert and Abert Rim, a downdropped basin and uplifted range
Lake Abert and Abert Rim, a downdropped basin and uplifted range in Oregon’s Basin and Range Province. A large normal fault runs along the break in slope on the left side of the photo. Basalt boulders of Steens Basalt make up the foreground. The Steens basalt, the oldest part of the Columbia River Basalt Group (~16.9 Ma) forms the rim. (120626-56)
Download ImageDiatomite overlain by basalt, southern Oregon.
Outcrop of diatomite overlain by basalt, southern Oregon. (120626-78)
Download ImagePorphyritic basalt- Phenocrysts of plagioclase.
Porphyritic basalt, with phenocrysts of plagioclase. This rock is part of the Steens Basalt, and early phase of the Columbia River Basalt Group at about 16.5 million years, Oregon.
Download ImageConchoidal fracture in obsidian.
Conchoidal fracture in obsidian. Big Obsidian Flow, Newberry Volcano, Oregon. This rhyolite obsidian flow is 1300 years old. (120625-91)
Download ImageConchoidal fracture in obsidian.
Conchoidal fracture in obsidian. Big Obsidian Flow, Newberry Volcano, Oregon. This rhyolite obsidian flow is 1300 years old. (120625-97)
Download ImageObsidian 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)
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