"Siliciclastic rudaceous sediment"@en . "RDSD"@en . "Siliciclastic rudaceous sediment - In the Rock Classification Scheme, these are siliciclastic sediments with more than 25% of clasts larger than 2 mm. British Geological Survey Research Report RR/99/03, section 2.1 and fig. 2."@en . "stable"@en . . "Siliciclastic rudaceous sediment"@en . . . .