"Barn Rock Member"@en . "Erosive contact at the base of the silty clays of Division C (of London Clay), King (1981)."@en . "Sandstone. Stratified bedrock. Occurs onshore. Deposited during the Eocene Epoch (Palaeogene Period) (56-33.9 Ma BP)."@en . . . . "Barn Rock Member"@en . "stable"@en . "56.0"^^ . . "Very fine-grained glauconitic sandstone."@en . "2-3m"@en . "BARO"@en . . . "33.9"^^ . . "Incoming of glauconitic and concretionary sandstone at the top of the silty clay coarsening upward sequence attributed to Division B (of London Clay) by King (1981)."@en .