17 397-11 black carbonaceous "bastard" clay 399-5 light tan ironstone 407 brownish-black "bastard" clay 409-3 black carbonaceous shale 413-3 dark brown carbonaceous claystone 418-6 black carbonaceous claystone 422-2 interbedded sandstone and siltstone with coaly partings. 466 white fine to medium-grained sandstone 470 coarse-grained sandstone - gray, fine- grained laminations 474 conglomerate 504-9 coarse-gr. sandstone, coaly partings, fine-grained sandstone and conglom- eratic zones throughout. 524 Dark gray to black shaly claystone 537 Dark gray siltstone with frag- ments of claystone in portions 547 white medium-gr. sandstone 552-6 black silty, shaly claystone 578 gray silty claystone to siltstone 588 fine-grained sandstone 591 gray, siltstone 593-2 gray fine-grained sandstone 601 medium-grained sandstone with numerous coaly partings and stumps, & small fragments of dark gray siltstone T.D. 601