The general name for all sediments, including clay, silt, sans, gravel or similar unconsolidated material deposited in a sorted or semi-sorted condition by a stream or other body of running water, in a stream bed, floodplain, delta or at the base of a mountain slope as a fan

Sediments deposited by water but which may now be dry land. A delta is an example of an alluvial deposit. [Lat alluvius, wash.

Detrital material which is transported by a RIVER and deposited - usually temporarily - at points along the FLOODPLAIN of a RIVER. Commonly composed of SANDS and GRAVELS.

Gem deposits found in water after they have been separated from the mother rock.

Concentration of material that have been separated by weathering from the host rock, and then deposited by rivers or streams.