WSediment
WArmor (hydrology)
WBarton Beds
WBay mud
WBlack sand
WBoulder clay
WBrickearth
WClay
WDesert pavement
WDetrital zircon geochronology
WDropstone
WExpanded clay aggregate
WLoess
WMoraine
WMud volcano
WOolitic aragonite sand
WPeat
WQuicksand
WSalt glacier
WSilt
WSiltation
WTill