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Buffalo Bayou, Houston, Texas
View upstream of Buffalo Bayou from Rosemont Pedestrian Bridge, Houston. (IP19-2599)
Download ImageBuffalo Bayou and Houston, Texas
Urban waterway: Buffalo Bayou and skyline of Houston, Texas (IP19-2596)
Download ImageChanneled bayou, Houston, Texas
Concrete-lined, channeled bayou. White Oak Bayou, Houston, Texas (190520-10)
Download ImageChanneled bayou, Houston, Texas
Concrete-lined, channeled bayou. White Oak Bayou, Houston, Texas (190520-8)
Download ImageChanneled bayou, Houston, Texas
Concrete-lined, channeled bayou. White Oak Bayou, Houston, Texas (190520-6)
Download ImageChanneled bayou, Houston, Texas
Concrete-lined, channeled bayou. White Oak Bayou, Houston, Texas (190520-5)
Download ImageGlacial valley and clouds, Colorado
Aerial of glacial valley and clouds, Longs Peak, Rocky Mountain National Park, Colorado. Note how Longs Pk forms a diamond-shaped headwall above the cirque. (190518-14)
Download ImageCovellite and pyrite veins
Platy covellite and pyrite veins in granitic rock. Penny for scale. From the collection of Mark Reed. (190415-12)
Download ImageMultiple quartz-moly-covellite veins
Multiple quartz-molybdenite-covellite veins in Butte Quartz Monzonite, a granitic rock, Montana. Penny for scale. From the collection of Mark Reed. (190415-9)
Download ImageCovellite vein cutting quartz-moly vein
Covellite vein cutting Butte Quartz Monzonite, a granitic rock. Penny for scale. From the collection of Mark Reed. (190415-8)
Download ImageCovellite vein cutting quartz-moly vein
Covellite vein cutting quartz-molybdenite vein in Butte Quartz Monzonite, a granitic rock. Penny for scale. From the collection of Mark Reed. (190415-7)
Download ImageNative copper and alteration (square)
Native copper and alteration in andesite. Penny for scale. From the collection of Mark Reed. (190415-4)
Download ImageStanding waves in river (vertical)
Standing waves in the Willamette River, Oregon. View looking downstream. (190412-7)
Download ImageCity park in flood, Eugene, Oregon
Alton Baker City Park inundated by water from flooding Willamette River, Eugene, Oregon (190409-3)
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Uprooted tree in forest, Oregon
Uprooted and fallen tree in Coast Range, Oregon. This process brings buried rock to the surface to be transported downslope. (190406-11)
Download ImageUprooted tree in forest, Oregon (vertical)
Uprooted and fallen tree in Coast Range, Oregon. This process brings buried rock to the surface to be transported downslope. (190406-10)
Download ImageEuropean Beach Grass on dunes, Oregon
European Beach Grass (Ammophila –or “marram grass”) on coastal sand dunes, Oregon. (110306-29)
Download ImageOblique coastal sand dunes, Oregon
Aerial view of oblique (nearly transverse) coastal sand dunes, Oregon. Deflation plain lies between the prominent dunes and the ones directly behind the beach. (9A2K-47)
Download ImageJurassic Aztec Sandstone, Nevada (Vertical)
Cliffs of Jurassic Aztec Sandstone, Red Rocks State Park, Nevada –Jurassic sand dune deposits equivalent to the Navajo Sandstone (190329-12)
Download ImageAlkaline deposits, Death Valley, California
Alkaline deposits covering ground, leached upwards by evaporating water, Death Valley National Park, California (190328-55)
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