What are Sands ?

 

 
Type distinguished by range of size: landscape features
particle name size inches (")

in millimeters = .039"

kind of rock formed:
  • clay
< .00156

< .004

Shale
Mud
  • silt ~
.00156 - .00248
.004 - .063
Siltstone
Mud
  • sand ~
.00249 -.078
.064 -2.00
Sandstone
  • granule ~
.078 -.155
2.00 - 4.00
smooth
angular
Conglomerate
Breccia
  • pebble ~
.156 - 2.5

4.00 - 64.00

  • cobble ~
2.51 -9.98
64.01 - 256.0
  • boulder ~
> 10 (9.98)
> 256
artifacts comparative
mass and size differ
Geological formations

Stanley Chernicoff, Geology: An introduction to Physical Geology, (Boston: Houghton Mifflin, 1999), p. 161.