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Field burning, Oregon
Smoke and ash rises as a plume from agricultural field burning, Willamette Valley, Oregon. (MG_7229)
Download ImageField burning, Oregon (Vertical)
Smoke and ash rises as a plume from agricultural field burning, Willamette Valley, Oregon. (MG_7225) soot, air pollution, agriculture
Download ImageField burning, Oregon (Vertical)
Smoke and ash rises as a plume from agricultural field burning, Willamette Valley, Oregon. (MG_7223)
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Beach gravel, Washington (vertical)
rounded cobbles make up much of the sediment on Dungeness Spit, Washington (MG_7145)
Download ImageSkagit gneiss migmatite, Washington
Migmatite of Skagit gneiss, North Cascades National Park, Washington (MG_6945)
Download ImageSkagit gneiss migmatite, Washington
Migmatite of Skagit gneiss, North Cascades National Park, Washington (MG_6932)
Download ImageEocene granite, Washington (vertical)
Eocene granite of the Golden Horn Batholith, Liberty Bell Mountain, North Cascades National Park, Washington (MG_6905)
Download ImageSkagit gneiss, N Cascades, Washington
Skagit gneiss and mountains, North Cascades National Park, Washington (MG_6857)
Download ImageGlacial valley, North Cascades, Washington
Glacially eroded, U-shaped valley of the Stehekin River, North Cascades National Park, Washington. (MG_6843)
Download ImageColumbia River, central Washington
Columbia River and Sentinel Gap, near Vantage, WA. Lavas of the Columbia River Basalt Group in foreground. (MG_6615)
Download ImageCorestone in granitic rock, Montana (Vertical)
Corestone, formed by spheroidal weathering in granitic rock, Montana (170528-6)
Download ImageCorestone in granitic rock, Montana
Corestone, formed by spheroidal weathering in granitic rock, Montana (170528-4)
Download ImageGrus, disintegrated granitic rock, Montana
Grus, small angular fragments of granitic material formed by chemical (hydrolysis) and mechanical weathering of granitic rock, Montana. Slope of deposit approximates the angle of repose for this material. (170528-3)
Download ImageGrus, disintegrated granitic rock, Montana
Grus, small angular fragments of granitic material formed by chemical (hydrolysis) and mechanical weathering of granitic rock, Montana. Slope of deposit approximates the angle of repose for this material. (170528-1)
Download ImageHogback and tilted sandstone, Colorado
Hogback formed by erosion of dipping beds. the red rock is the Pennsylvanian Fountain Formation. Near Morrison, Colorado (170523-108)
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Haul trucks used in gold mining, Colorado
Haul trucks, capable of carrying 250 tons per load, used in gold mining, Colorado (170523-90)
Download ImageHaul truck used in gold mining, Colorado
Haul truck, capable of carrying 250 tons per load, used in gold mining, Colorado (170523-73)
Download ImageHaul trucks used in gold mining, Colorado
Haul trucks being loaded with waste rock in an open-pit gold mine in Colorado. Each truck is capable of carrying 250 tons per load. (170523-64)
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