. . . . "Aurora Formation"@en . "stable"@en . . "Aurora Formation"@en . "AUR"@en . . "0.87"^^ . "1.8"^^ . "Stratified bedrock. Occurs offshore. Deposited during the Marine Isotope Stage 62 - to - Marine Isotope Stage 22 (Quaternary Period) (1.8-.87 Ma BP)."@en .