. "Fluvial and older river sands and gravels [Obsolete: use ORSG]"@en . . . . "Fluvial and older river sands and gravels [Obsolete: use ORSG]"@en . . "archaic"@en . "FORA"@en . . "Older river sand and gravel"@en . "2.58"^^ . . "0.0"^^ . "[Obsolete: use ORSG] \r\n\r\nSand and gravel; of fluvial origin; includes modern and historical deposits. [Generic description]."@en . . "Obsolete name. Gravel and sand. Superficial deposits. Occurs onshore. Formed during the Quaternary Period (2.58-0 Ma BP)."@en .