alluviums
Waterborne soil accumulations
Alluviums is the plural of alluvium—sediment deposited by flowing water, typically along riverbeds, floodplains, and deltas.
The material consists of clay, silt, sand, and gravel carried downstream and left behind when water slows.
Alluviums form fertile agricultural land: The alluviums of the Nile valley supported ancient Egyptian civilization.
The alternative plural is alluvia.
Particles settling in liquid
- depositsMaterial settled or stored
- siltWaterborne earth particles
- clayMoldable earth for ceramics
- gravelLoose small rock fragments
sand · floodplain · riverbed · delta · erosion · weathering · deposition · stratigraphy
Able to reproduce abundantly
- soilGround matter for planting
- farmlandAgricultural terrain
- irrigationArtificial water supply for agriculture
- NileAfrica's longest river
Ganges · Mekong · rice paddies · cultivation · nutrients · topsoil · yield · Punjab
Mineral-rich sediment accumulation
- goldElement seventy-nine
- panningLateral camera traverse
- nuggetsSmall solid lumps
- prospectingSearching for mineral wealth
sluice · dredging · tin · diamonds · minerals · extraction · concentrate · tailings
sediment
Particles settling in liquid
gravel · sand · floodplain · riverbed · delta · erosion · weathering · deposition · stratigraphy · loam
fertile
Able to reproduce abundantly
- soilGround matter for planting
- farmlandAgricultural terrain
- irrigationArtificial water supply for agriculture
Nile · Ganges · Mekong · rice paddies · cultivation · nutrients · topsoil · yield · Punjab · cotton
placer
Mineral-rich sediment accumulation
prospecting · sluice · dredging · tin · diamonds · minerals · extraction · concentrate · tailings · washings
alluviumsbedrock
Solid stone underground
solid rock · igneous rock · metamorphic rock · hardpan · outcrop