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Found Boulders 1 time.

Displaying results 1 to 10.

1. Boulders
* Largest rock transported by a stream or rolled in the surf; arbitrarily heavier than 50 pounds and larger than 8 inches. * Substrate particles greater than 256 mm (10 inches) in diameter. Often subclassified as small (256 to 1,024 mm) and large boulders (larger than 1,024 mm).

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