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Contact: Katherine Unger Baillie
University of Pennsylvania

Rounding River Rocks

Caption: A new study by the University of Pennsylvania's Douglas Jerolmack, working with mathematicians at Budapest University of Technology and Economics, has found that rocks traveling down a riverbed follow a distinct pattern, first becoming rounder, and then smaller.

Credit: University of Pennsylvania

Usage Restrictions: In context of reporting

Related news release: Penn geophysicist teams with mathematicians to describe how river rocks round

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