A quarry is where granular material has been excavated.
Gravel . Gravel is categorized by the Udden-Wentworth scale into granular gravel ( 2 to ) and pebble gravel ( 4 to ) . A quarry is a place from which dimension stone , rock , construction aggregate , riprap , sand , gravel , or slate has been excavated from the ground . Sand is a naturally occurring granular material composed of finely divided rock and mineral particles .