"526.0"^^ . "From 150 m - 225 m thick."@en . "Eriboll Sandstone Formation [Obsolete: use ERSA]"@en . "stable"@en . "508.0"^^ . . "Feldspathic-arenite, quartz-arenite, quartzite and sandstone with subsidiary conglomerate and trace mudstone. Stratified bedrock. Occurs onshore. Deposited during the Comley Series (Cambrian Period) (526-508 Ma BP)."@en . . . . "Eriboll Sandstone Group [Obsolete: use ERSA]"@en . . . "Defined at the boundary with the overlying Fucoid Beds Member of the Ant-Sron Formation"@en . . . "Eriboll Formation"@en . "ERSA"@en . . "Defined where a thin conglomerate at the base of the Basal Quartzite Member lies above an angular unconformity and oversteps both the Complex and the Torridon Group"@en . . "Predominantly quartz arenite and quartzite with a thin basal conglomerate. Comprises a lower unit (Basal Quartzite Member) and an upper unit containing abundant Skolithos burrows (Pipe Rock Member)."@en . . "Arenaceous Series [Obsolete: use ERSA]"@en . . . . "Eriboll Formation"@en .