uploads - Sizes

Gravel
Sediment made predominantly of grains larger than 2 millimetres (granules and above on the grain size chart above).
In our area, gravels were laid down by glacial streams.

Gravel can be subdivided into granules (2-4 mm), pebbles (4-64 mm), cobbles (64-256 mm) and boulders (>256 mm).