. "Dry valley deposits"@en . . "Dry valley deposits are superficial deposits derived dominantly by solifluction processes in valleys cut into porous rocks, particularly limestones. Deposits may have a fluvially derived component. \r\n\r\nNormally soft to firm consolidated, compressible silty clay, but may contain layers of silt, sand, peat and a basal gravel. A stronger, desiccated surface zone may be present."@en . "2.58"^^ . "0.0"^^ . . "DVY"@en . . "stable"@en . . . "Silty clay with subsidiary clay, gravel, peat and sand. Mass movement (landslide) deposits. Occurs onshore. Formed during the Quaternary Period (2.58-0 Ma BP)."@en . . . "Dry valley deposits"@en .