Rainwash

Rainwash, also spelled rain-wash or rain wash or sometimes called hillwash, is a process of erosion in which loose surface material is carried away by rainwater that has reached the surface, but has not yet become concentrated into streams. The term is also applied to the movement under the force of gravity of material loosened by rainwater, or to the material itself.[1]

Vízmosás (rainwash) - panoramio.jpg (description page)

Rainwash is sometimes regarded as a combination of two processes: rain-splash, which is the detachment and movement of small soil particles from raindrop impact, and soil-wash, in which material is moved downslope by surface water flow.[2]

References

Jackson, Julia A., ed. (1997). "rainwash". Glossary of geology (Fourth ed.). Alexandria, Virginia: American Geological Institute. ISBN 0922152349.
Allaby, Michael (2013). "rain-wash". A dictionary of geology and earth sciences (Fourth ed.). Oxford: Oxford University Press. ISBN 9780199653065.

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[Jackson1997-1] Jackson, Julia A., ed. (1997). "rainwash". Glossary of geology (Fourth ed.). Alexandria, Virginia: American Geological Institute. ISBN 0922152349.

[Allaby2013-2] Allaby, Michael (2013). "rain-wash". A dictionary of geology and earth sciences (Fourth ed.). Oxford: Oxford University Press. ISBN 9780199653065.