Regolith vs Alluvium - What's the difference?
regolith | alluvium |
(geology) The layer of loose rock, dust, sand, and soil, resting on the bedrock, that constitutes the surface layer of most dry land on earth, the moon, and other large solid aggregated celestial objects. There can also be sub-marine regolith.)
soil, clay, silt or gravel deposited by flowing water, as it slows, in a river bed, delta, estuary or flood plain