. "c.400m on Durn Hill, thinning to c.150m at coast. Probably repeated by folding and thrusting on Knock Hill and farther south."@en . . . . "Durn Hill Quartzite Formation"@en . . "Quartzite with subsidiary psammite and trace gritty psammite, metadiamictite, micaceous psammite and semipelite. Stratified bedrock. Occurs onshore. Deposited during the Neoproterozoic Era (Precambrian) (1000-541 Ma BP)."@en . . "1000.0"^^ . "stable"@en . "Rapid transition to pelite (graphitic near coast) at base of Castle Point Pelite Formation."@en . . . "Kymah Quartzite Formation"@en . . "Change from interbedded psammite and semipelite of Arnbath Formation, where present, or pelite and limestone of Fordyce Limestone Formation, to thicker-bedded quartzite."@en . "Quartzite, massive to blocky, locally feldspathic. Micaceous quartzite at base in southern part of outcrop."@en . "Durn Hill Quartzite Formation"@en . "Upper part of Durn Hill Quartzite [Obsolete: use DBDQ]"@en . "DBDQ"@en . "541.0"^^ . .