. "stable"@en . "Dolerite."@en . . "GSI"@en . . "23.04"^^ . . "66.0"^^ . "Dolerite. Igneous intrusive bedrock. Occurs onshore. Emplaced during the Paleogene Period (66-23.04 Ma BP)."@en . "Gobb Sill"@en . . "Gobb Sill"@en . .