![]() |
![]() Figure 11. Stratigraphic section, Upper Pennsylvanian Monongahela and Conemaugh Groups. Sewickley coal bed; Sewickley limestone of Platt and Platt (1877); Fishpot coal bed; Fishpot limestone of Stevenson (1876); Redstone coal bed; Redstone limestone of Platt and Platt (1877); Pittsburgh coal bed; Little Pittsburgh coal bed, upper and lower seams; and Pittsburgh limestone are shown. |