downward 481 Greenish gray sideritic siltstone 492-6 Interbedded gray siltstone and sandstone 496-10 Silty claystone and semiplastic clay 504-7 Interbedded siltstone and fine sandstone. 507-7 Gray silty clay and claystone with ironstone concretions 515 Gray shaley siltstone, sandy streaks 517-4 Fine sandstone, silty streaks 532-8 Gray to black carbonaceous shale, silty at top. 533-10 Coal - UPPER FREEPORT RIDER 536- 2 Carbonaceous claystone, streaks of coal. 538-9 Interlaminated dark shaley siltstone and white sandstone. 539-9 Black shale 542- 4 Coal UPPER FREEPORT 546-7 Dense gray silty claystone, limey pellets in lower half. 563 Argillaceous siltstone; calcareous zones and limey pellets throuout 572-6 Argillaceous sandstone, minor siltstone, calcareous zones and limey pellets throuout. 574 Argillaceous limestone 578 Irony fragmental claystone and semiflint clay. (Light gray to brown gray. Iron - ferruginous stringers. Lith CB211 upper foot, CB212, lower foot.) 85