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Armored mud ball

A geological curiosity - the armored mud ball.
— As soft mud erodes onto a gravelly beach or stream channel it sticks to the stones, forming an armor that prevents it from dispersing into the water. Here the armor was largely composed of coal gravel, perhaps because coal and saturated mud have similarly low density and tend to wind up together on beaches.

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Photo taken by Bretwood Higman

Attribution and Copyright info

By Bretwood Higman

Content on this page is available under a Public Domain license.

Public Domain