512 CARBONIFEROUS ROCKS IN CUMB. CO. — LOGAN & FLETCHER. 



Ft. In. 



IG. lied and green argillaceous shale. A band of black 



shale and coal 3 inches on top (p. 510) 1 



17. Light gi'ay very tine sandstone with an nnderclay at 



the top 3 



18. Red argillaceous shale 1 3 



19. Greenish argillaceous shale 8 



20. Bright-red conglomerate, j)assing into red sandstone 1 



21. Light-gray line sandstone with coal-pipes 7 



22. Greenish and gray pea-and-nnt conglomerate 9 



23. Greenish argillaceous shale, ])assing into harder Hags 1 2 



2-1. Greenish coherent flag 5 



25. Red argillaceous shale and sandstone or arenaceous 



shale and flags, faulted 14 



20. Light bluish-gray very fine sandstone 4 



27. Red Hags with greenish layers and blotches 6 



28. Gray very fine sandstone with a reddish tinge .... 2 



29. Red argillaceous shale with layers of greenish sand- 



stone 10 



30. Gray, coarse, pebbly sandstone 2 



31. Red argillaceous shale with bands of greenish, fine 



coherent, fiaggy sandstone 12 



32. Light gray, ripple-marked sandstone with the foot- 



prints of some land animal 5 



33. Red argillaceous shale 



34. Light-gray and rusty ver}^ fine sandstone with 



small patches of conglomerate 12 



35. Red argillaceous shale and sandstone, not well 



exposed 10 



36. Greenish-gray very fine sandstone 1 6 



37. Red argillaceous shale, not well exposed but appar- 



ently not faulted 20 



38. Light-gray, fine, flaggy sandstone, with patches of 



conglom.eirate 10 



39. Greienish-gray and rusty sandstone and conglomerate 



mixed 5 0' 



