. "Bedrock. Occurs both onshore and offshore. Formed during the Eocene Epoch - to - Oligocene Epoch (Palaeogene Period) (56-23.04 Ma BP)."@en . "Eocene And Oligocene Rocks (Undifferentiated)"@en . "56.0"^^ . "23.04"^^ . . "GEGO"@en . "Eocene And Oligocene Rocks (Undifferentiated)"@en . . "stable"@en . .