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1.4.2 Ripple Marks

Ripple marks are small-scale subparallel ridges and troughs formed in loose sand by wind, water currents, or waves.


Images
Sand dunes. Yuma Sands, CA 80 miles west of Yuma, AZ
Sand dunes. Yuma Sands, CA 80 miles west of Yuma, AZ
Original picture from the Ward Collection
Sand dunes. Yuma Sands, CA 80 miles west of Yuma, AZ  Death Valley 

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