"0.48"^^ . "Elsterian to Holsteinian mud, firm to hard (offshore)"@en . "0.362"^^ . "Mud, firm to hard."@en . "Mud. Superficial deposits. Occurs offshore. Formed during the Elsterian Stage - to - Holsteinian Stage (Quaternary Period) (.48-.362 Ma BP)."@en . . "Elsterian to Holsteinian mud, firm to hard (offshore)"@en . "EHMFH"@en . "stable"@en . . . . .