Particle Shape
Sediments
Outline
Particle size is an important factor in determining many important physical rock properties including strength, porosity, permeability, density and many others. It also determines the name of the sedimentary rock type for clastic rocks.
| PARTICLE DIAMETER (mm) | NAME | CLASTIC ROCK TYPE |
|---|---|---|
| > 256 | Boulder | VERY COARSE CONGLOMERATE |
| 64-256 | Cobble | COARSE CONGLOMERATE |
| 2-64 | Gravel | CONGLOMERATE |
| 2-0.6 | Coarse Sand | COARSE SANDSTONE |
| 0.6-0.2 | Medium Sand | MEDIUM SANDSTONE |
| 0.2-0.06 | Fine Sand | FINE SANDSTONE |
| 0.06-0.002 | Silt | SILTSTONE |
| < 0.002 | Clay | MUDSTONE |
Particle Shape
Sediments
Outline