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3321
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frank224
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1
date added
2008-12-16
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Sport
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Dry Arizona lake bed
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Dry Arizona lake bed

"a close-up of a desert landscape"

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Comments for: Dry Arizona lake bed
frank224 Report This Comment
Date: December 16, 2008 05:30AM

With the snow-draped Sierra Nevada as a backdrop, unique erosion formations called sand tufa stand like giant cauliflower stalks in a dry Arizona lake bed. Before this alkaline lake went dry, tufa formed when a freshwater spring percolated from below and formed calcium carbonate deposits. When the lake's level dropped, these fragile formations surfaced, and wind went to work removing the sand beneath the deposits.