shaley, 438 Dark gray silty claystone, plant remains 456-7 Black shaley siltstone with marine fossils (Brush Creek) 458 Coal + bone BRUSH CREEK 460-5 Dark gray fine grained sandstone 464 Gray medium grained sandstone, x bedded, shale partings 467-6 Dark gray silty clay 469-6 Calcareous gray clay with limey pellets 474-6 Gray slightly silty clay 477 Gray finegrained sandstone lenses of claystone and siltstone 485-6 Silty gray clay 492-10 Gray claystone and semi-hard silty clay with sandy zones. 494 Green clay 496 Gray clay 514-6 shaly green claystone 515-6 Dark gray silty clay and claystone 526-6 Gray bastard clay 528-6 Gray siltstone 530 Fine micaceous sandstone 531-6 Greenish gray clay, calcite stringers 532-6 Greenish gray fragmental claystone (CBZZ) 547 Greenish gray silty clay, sandy streaks and calcareous stringers. 548 Grey to black claystone 552-10 Interbedded siltstone, sandstone + claystone 559-11 1/2 Black micaceous shale 560-10 1/2 Coal FREEPORT RIDER 563 Carbonaceous shale, coal partings 565-9 Interbedded fine sandstone & siltstone 568-6 Carbonaceous shale 571-4 1/2 Coal UPPER FREEPORT 574-6 Carbonaceous shale with lenses argillaceous limestone. Plant fragments 584-6 Gray dense argillaceous limestone. 8.