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Radiolarian (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)
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. (140308-62)
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. (140308-59)
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. (140308-60)
Download ImageFractured ice on Lake Erie (vertical)
Aerial view of Fractured ice on Lake Erie, Ohio-Ontario border. (140305-34)
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. (140308-39)
Download ImageFractured ice on Lake Erie (vertical)
Aerial view of Fractured ice on Lake Erie, Ohio-Ontario border. (140305-36)
Download ImageColorado Mountains meet Great Plains
Aerial view of western edge of Colorado Front Range near Loveland, Colorado. Note hogbacks. (140305-4)
Download ImageLake Erie and Cleveland, Ohio
Aerial view of South shore of frozen Lake Erie and Cleveland, Ohio. (140305-44)
Download ImageFrozen Lake Erie, Ohio-Ontario
Aerial view of Fractured ice on Lake Erie, Ohio-Ontario border. (140305-32)
Download ImageFracture patterns on frozen Lake Erie
Fracture patterns in ice on Lake Erie, from an elevation of about 20,000′. Photo is about 5 miles across. (140305-38)
Download ImageWaterfall and grotto, Oregon Coast
Undercutting of sea cliff by wave erosion formed this grotto on the Oregon Coast. (140301-40)
Download ImageFractured ice, Lake Erie
Aerial view of fracture patterns in ice on Lake Erie, from an elevation of about 20,000′. Photo is about 5 miles across. (140305-28)
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Frozen Lake Erie, Michigan, Ontario
Aerial view of west and north shorelines of Lake Erie, Michigan and Ontario, Canada. Lake Erie is frozen. (140305-16)
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