. . "To 3m"@en . "BEGR"@en . "Unconformable on bedrock."@en . "Brown Sands and Gravels [Obsolete: use BEGR]"@en . "Birnie Gravel Formation"@en . . "Birnie Gravel Formation"@en . . . "Tectonic or unconformable contact with Mill of Forest Till Formation or Benholm Clay Formation."@en . "0.126"^^ . "Gravel with subsidiary sand and trace silt. Stratified superficial deposits. Occurs onshore. Formed during the Anglian Stage - to - Wolstonian Stage (Quaternary Period) (.48-.126 Ma BP)."@en . "0.48"^^ . . . "Matrix-rich red-brown clayey gravel containing cobbles of schistose semipelite, quartzite, psammite, sandstone and some chalk flints locally."@en . "stable"@en .