Vertical Section of Rocks of Perry County.
 
     2. Glacial Drift.
     1. Carboniferous.
               6. Upper Barren Coal Measures.
               5. Upper Productive Coal Pleasures,
               4. Lower Barren Coal Measures.
               3. Lower Productive Coal Measures
               2. Conglomerate Series.
               l. Subcarboniferous Limestone.

16

Next Chapter