Silica (Inventory)/Silt Hoodoo
From LagWiki
The Silt Hoodoo field of the Silica section should be used to record any observations of hoodoos in silt or other granular media.
Hoodoos are formed in relatively soft rock or sediments topped by a harder, less easily eroded cap that protects each column from erosion. The softer material is partially eroded leaving behind a column. The result is a tower or cone of the more easily eroded material capped by the protecting layer.
