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Soil profile on granitic rock (vertical)
Soil profile developed on granitic rock, coastal grassland, California (140324-57)
Download ImageSoil profile on granitic rock
Soil profile developed on granitic rock, coastal grassland, California (140324-54)
Download ImageSoil profile on granitic rock
Soil profile developed on granitic rock, coastal grassland, California (140324-55)
Download ImageGranitic headlands near Pacifica, California
Coastal headlands of Cretaceous granodiorite near Pacifica, California. (140324-48)
Download ImageGranitic headlands near Pacifica, California
Coastal headlands of Cretaceous granodiorite near Pacifica, California. (140324-49)
Download ImageSoil profile on granite
Soil profile developed on granitic rock in coastal grassland, California coast. (140324-45)
Download Imagesoil profile on granite.
Soil profile developed on granitic rock in coastal grassland, California coast. (140324-46)
Download Imagesoil profile on granite.
Soil profile developed on granitic rock, California coast in coastal grassland. (140324-47)
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Waves and headland, Pacifica, California.
Waves and headland near Pacifica, California. (140324-41)
Download ImageFolded radiolarian (ribbon) chert
Folded radiolarian (ribbon) chert of the Cretaceous Franciscan Assemblage. California. (140322-52)
Download ImageBreaking wave, California
Breaking wave, California, coastline near Pacifica. (140324-1)
Download ImageBreaking wave, California
Breaking wave, California, coastline near Pacifica. (140324-28)
Download ImageRadiolarian (ribbon) chert, California (vertical)
Close-up view of radiolarian chert of the Cretaceous Franciscan Assemblage, Marin County, California. (140322-3)
Download ImageRadiolarian (ribbon) chert, California
Headland of radiolarian chert of the Cretaceous Franciscan Assemblage, Marin County, California. (140322-57)
Download ImageRadiolarian (ribbon) chert, California (vertical)
Outcrop of radiolarian chert of the Cretaceous Franciscan Assemblage, Marin County, California.(140322-2)
Download ImageCoastal headlands, California
Headlands of Franciscan Assemblage along coastline of Marin Headlands, California. (140322-13).
Download ImageCoastal headlands, California
Headlands of Franciscan Assemblage along coastline of Marin Headlands, California. (140322-23).
Download ImageWaves attacking headland, California
Waves attacking coastal headland near Marin, California. (140322-37)
Download ImageSinkhole, central Florida
Aerial view of circular sinkhole in central Florida. Sinkholes form by dissolution and collapse of underlying limestone bedrock. The water level marks the groundwater table. (140308-57)
Download ImageMeandering river, New Jersey
Aerial view of meandering river in urban area, Old Place Creek, Staten Island, New York. River channel is close to eroding through and cutting off an oxbow lake. (140308-16)
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