"Not known, but at least 200m"@en . "stable"@en . . . "Not seen ie. this is the youngest unit exposed in the major Kinlochlaggan syncline."@en . . . . "Semipelite and pelite, schistose to gneissose and locally kyanite-rich, containing calc-silicate rock and metalimestone units. Cut by abundant amphibolite sheets."@en . . . "541.0"^^ . "Coire Cheap Formation"@en . "1000.0"^^ . "Metalimestone, pelite and semipelite with subsidiary amphibolite, calcsilicate-rock, metacarbonate-rock and micaceous psammite and trace graphitic schist. Stratified bedrock. Occurs onshore. Deposited during the Neoproterozoic Era (Precambrian) (1000-541 Ma BP)."@en . . . "Sharp base at the marked quartzite-pelite / semipelite boundary at the top of the Kinlochlaggan Quartzite Formation. Alternatively lies above the Kinlochlaggan 'Boulder Bed'."@en . "COCH"@en . "Coire Cheap Formation"@en .