663-3 Argillaceous limestone 667 Semiplastic and semihard clay, silty & sandy 671 Gray argillaceous siltstone 680-6 Interbedded siltstone and fine sandstone 682-5 Fragmental siltstone and silty claystone 699-4 Gray siltstone, zones of ironstone 713-2 Interbedded siltstone and fine sandstone 714-2 Dark gray to carbonaceous shale 714-9 Coalry claystone 717-2 Claystone, fragmental zones, some limestone inclusions in lower part 719-1 Semiplastic and fragmental semiflint clay, some limey inclusions 721 Siltstone with zones ironstone 724-1 Interbedded siltstone and sandstone 729-9 Gray to black shale silty streaks 732-4 Coal 735 Argillaceous limestone T.D. 735 146