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Ash Flow tuff, Crater Lake, (vertical)
Ash flow tuff from caldera-forming eruption of Mt. Mazama to form Crater Lake about 7700 years ago, Crater Lake National Park, Oregon. The ash flow deposits erode into Pinnacles. The pinnacles are more resistant to erosion than the surrounding rock because of precipitation of minerals from gas escaping from the ash flow. (5D-8663)
Download ImageConcretions in sandstone, Oregon (vertical)
Concretion in Eocene Coaledo Formation sandstone (5D-8914)
Download ImageBoring clams in sandstone
Boring clams bore holes into relatively soft sandstone in many intertidal zones. (5D-8540)
Download ImageUplifted marine terrace, Oregon
Uplifted marine terrace, Oregon and angular unconformity between the terrace gravels and underlying tilted Eocene Coaledo Formation. Shore Acres State Park, Oregon. (5D-8890)
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Eroded ash flow tuff
Eroded ash flow tuff from caldera-forming eruption of Mt. Mazama to form Crater Lake about 7700 years ago. The ash flow deposits erode into Pinnacles. The pinnacles are more resistant to erosion than the surrounding rock because of precipitation of minerals from gas escaping from the ash flow. Crater Lake National Park, Oregon. (5D-8656)
Download ImageTilted Eocene Rock, Oregon Coast (vertical)
Tilted Eocene Coaledo Formation, Oregon Coast near Cape Arago. (5D-8559)
Download ImageTilted Eocene Rock, Oregon Coast (vertical)
Tilted Eocene Coaledo Formation, Oregon Coast near Cape Arago. (5D-8565)
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Wizard Island, Crater Lake, Oregon.
Wizard Island, a post-caldera cinder cone, rises above Crater Lake, Oregon. (5D-8618)
Download ImageGlaciated volcano, Mt. Jefferson, Oregon
Glacially eroded stratovolcano reflected in subalpine lake. Scout Lake, Russell Glacier and Mt. Jefferson, High Cascades, Oregon. (5D-8433)
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Glaciated volcano, Mt. Jefferson, Oregon
Glacially eroded stratovolcano reflected in subalpine lake. Scout Lake, Russell Glacier and Mt. Jefferson, High Cascades, Oregon. (5D-8295)
Download ImageRussell Glacier on Mt. Jefferson, Oregon
Russell Glacier on Mt. Jefferson, an eroded stratovolcano in the Oregon Cascades. (5D-8316)
Download Imagewater sprinkler and rainbow
Sprinkler watering crops in Oregon and rainbow. (5D-7940)
Download ImageGlaciated volcano, Mt. Jefferson, Oregon
Headwall, cirque, and glacier on a stratovolcano reflected in subalpine lake. Scout Lake, Russell Glacier and Mt. Jefferson, High Cascades, Oregon. (5D-8305)
Download ImageWindstorm on playa, SE Oregon. (Pan)
Dust storm on Summer Lake Playa, a pluvial lake in SE Oregon. (5D-7879)
Download ImageParallel streams viewed from air
Aerial view of parallel streams and erosion. (5D-7919)
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