clastic sediment
type of sediment
mud
mixture of water and any combination of soil, silt, and clay
sand
granular material composed of finely divided rock and mineral particles, sand particles range in diameter from 0.063 to 2 mm (per ISO 14688)
clay
soft rock based compound often used for sculpture and tools
gravel
mix of crumbled stone (grain size range between 2 – 63 mm according to ISO 14688)