(which water molecules find sticky)
|Silt||up to 1/400 inch 0.064 mm|
|Sand||up to 1/10 inch 2.5 mm|
|Pebble||up to 1/4 inch
(may be called sand or gravel)
|Gravel||up to 2.5 inches 64 mm|
|Cobble||up to 10 inches
(may be called a boulder)
|Boulder||more than 10 inches 256 mm|
Weathering is more interesting...
Much of the Earth's crust is granite-like rock - minerals solidified out of molten rock. Granite is made up of three major kinds of minerals...