471-7 Coal 473-4 Carbonaceous clay Davis 476-10 Coal 478-10 Dark to light gray claystone and silty claystone locally calcareous (GC 232) 490-10 Calcareous siltstone and silty claystone, calcareous stringers, 495 Irregularly bedded fine sandstone 501-10 Semihard fragmental clay, calcareous stringers and thin beds of limestone in upper 1/2 feet. (GC 233) 510 Claystone grading to siltstone. 517-9 Irregularly interbedded fine sandstone and siltstone (siltstone fragmental in lower part) 522-4 Fragmental siliceous claystone (ton) interstitial siltstone (GC 234) 524 Shaly bastard clay 530 Gray to dark gray claystone and shaly claystone 530-6 Carbonaceous shale, coaly streaks. 535 Bastard clay and claystone. 536 Limestone 538-6 Semihard clay locally fragmental 542 Silty claystone grading to siltstone 552 Clutlebedded silty siltstone, silty shale and sandstone 554 Gray to black shale 555-5 Coal 558-8 Calcareous claystone 559-2 Dirty flint clay 569-3 Silty claystone and siltstone. 587 Med-grained gray (sandy) sandstone 610 " Sandstone beaded in lower part 611 Claystone concretions in mudstone 614-7 Coal 618 Dirty flint and semishale. 628-7 Siltstones and interbedded sandstone, silty claystone at top.