"Coastguard Station Vent"@en . . "Agglomerate and tuff. Igneous intrusive bedrock. Occurs onshore. Emplaced during the Early Mississippian Epoch - to - Mid Mississippian Epoch (Carboniferous Period) (359.3-330.3 Ma BP)."@en . "330.3"^^ . . "359.3"^^ . "CGRD"@en . "Agglomerate and tuff."@en . "stable"@en . . . . . "Coastguard Station Vent"@en .