. . "Arbuthnott-Garvock Group And Strathmore Group (Undifferentiated)"@en . . "stable"@en . "Arbuthnott-Garvock Group And Strathmore Group (Undifferentiated)"@en . . . . "419.0"^^ . "394.3"^^ . "ATGKS"@en . "Sandstone with subsidiary conglomerate, mudstone, rhyolite lava, siltstone, tuff and volcaniclastic-sandstone and trace andesite, andesite lava, andesitic-rock, basalt, basalt lava, basaltic-andesite, lava, limestone, nodular limestone (cornstone) and trachyandesite. Bedrock. Occurs onshore. Formed during the Early Devonian Epoch (Devonian Period) (419-394.3 Ma BP)."@en . .