586-6 Finely silty gray to green semiplastic clay, 589-4 Fragmental claystone, siltstone, and fine sandstone in siltstone matrix (Lith. CB213) 589-8 Argillaceous limestone 605 Light and dark gray silty semiplastic clay grading to claystone (base 4' fragmental claystone - Lith. CB214 and CB215) 611-10 Silty and sandy gray claystone 617-7 Sandstone, some interbedded siltstone. 623-7 Dark to carbonaceous silty shale, sandy in upper 1 1/2'. 626-11 Coal 635-9 Dark and light gray silty claystone, 2' fragmental semiflint clay at base (Lith. CB216) 650-10 Interbedded siltstone and sandstone minor clay shale in middle part. 651-2 Carbonaceous shaley clay 656-11 Dark gray clayey siltstone 658-9 Gray clay shale grading to silty semiflint clay. 668 Interlaminated dark silty shale and light sandstone 670-2 Dark gray shale 671-0 Coal and bone 677-4 Dark gray to carb. clay shale