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Pegmatite veins in gneiss

En-echelon pegmatite veins (small dikes) in gneiss. (101229-12)
Download ImageCollapse of sand along normal faults

During beach erosion, the edges of beach berms become oversteepened and fail. (101226-21)
Download ImageTide and ocean waves, Florida (vertical)

Incoming tide on Florida Gulf Coast (101222-34)
Download ImageRed mangroves, Florida.

Red mangroves (Rhizophora mangle) in SW Florida gulf coast. Mangrove trees help extend land outwards into shallow bays and estuaries by trapping sediment in their prop roots.
Download ImageBeach erosion, Florida (Vertical)

Beaches along Florida’s Gulf Coast experience a great deal of beach erosion during frequent storms. (101226-52)
Download ImageAlluvium, Mojave Desert

Loose boulders cover an alluvial surface in Death Valley National Park, California. (101219-4)
Download Imagekelp and seawater (vertical)

Kelp (seaweed) and sea water, Florida Gulf Coast. (101222-24)
Download Imageocean swell and waves, Florida (vertical)

Incoming tide on Florida Gulf Coast (101222-32)
Download ImageAerial view of the Salton Sea and Imperial Valley, California.

Aerial view of the Salton Sea and Imperial Valley, California. View towards the north.
Download ImageDendrites of manganese oxide

Manganese oxide (pyrolusite) dendrites on sandstone. This is the same material as desert varnish. (091214-1)
Download ImageUS-Mexico Border.

Aerial view of the Rio Grande River, that runs down the center of this photo, marking the US-Mexico Border. Juarez, Mexico lies on the left (south) side; El Paso, Texas, on the right (north). Note the contrast in architecture from one side to the other. (100128-112)
Download ImageView over Point Loma, California.

Aerial view over Point Loma to San Diego and San Diego Bay, California. (100128-69)
Download ImageSan Francisco and Marin Headlands, California.

Aerial view of San Francisco north to Marin Headlands, California. (100128-32)
Download ImageDelta in alpine lake, British Columbia.

Delta forming in alpine lake, Yoho National Park, British Columbia, Canada (090910-43)
Download Image
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