"443.1"^^ . "Leucogranite. Igneous intrusive bedrock. Occurs onshore. Emplaced during the Silurian Period (443.1-419 Ma BP)."@en . . . "Grugie Pluton"@en . "stable"@en . "Grugie Pluton"@en . "GRUE"@en . . . . . "Leucogranite."@en . . . "419.0"^^ .