Cob
What Is The Difference Between Boulders Cobbles And Pebbles?
gravel range in size from pebbles (4–64 mm [0.16–2.52 inches] in diameter), through cobbles (64–256 mm [2.52–10.08 inches]), to boulders (larger than 256 mm). What is the difference between boulders and pebbles? In geology, a boulder (or rarely bowlder) is a rock fragment with size greater than 25.6 centimetres (10.1 Read more…