sediments: layers of loose particles created from weathering and erosion.
Weathering– chemical and physical processes that break up and decay rocks into smaller
rocks or fragments.
Erosion– a set of processes that loosen soil and rock and move them to a place of
Siliciclastic sediments – physically deposited particles laid down by
running water, wind, and ice forming layers of sand, silt, and gravel.
Chemical and biochemical sediments – new chemical substances formed by precipitation.