Pennsylvania  |
|---|
| BT | United States |
| | .Pennsylvania |
| NT | Adams County Pennsylvania |
| | Allegheny County Pennsylvania |
| | Armstrong County Pennsylvania |
| | Beaver County Pennsylvania |
| | Bedford County Pennsylvania |
| | Berks County Pennsylvania |
| | Blair County Pennsylvania |
| | Bradford County Pennsylvania |
| | Bucks County Pennsylvania |
| | Butler County Pennsylvania |
| | Cambria County Pennsylvania |
| | Cameron County Pennsylvania |
| | Carbon County Pennsylvania |
| | Centre County Pennsylvania |
| | Chester County Pennsylvania |
| | Clarion County Pennsylvania |
| | Clearfield County Pennsylvania |
| | Clinton County Pennsylvania |
| | Columbia County Pennsylvania |
| | Conemaugh River |
| | Crawford County Pennsylvania |
| | Cumberland County Pennsylvania |
| | Dauphin County Pennsylvania |
| | Delaware County Pennsylvania |
| | Elk County Pennsylvania |
| | Erie County Pennsylvania |
| | Fayette County Pennsylvania |
| | Forest County Pennsylvania |
| | Franklin County Pennsylvania |
| | Fulton County Pennsylvania |
| | Greene County Pennsylvania |
| | Huntingdon County Pennsylvania |
| | Indiana County Pennsylvania |
| | Jefferson County Pennsylvania |
| | Juniata County Pennsylvania |
| | Lackawanna County Pennsylvania |
| | Lancaster County Pennsylvania |
| | Lawrence County Pennsylvania |
| | Lebanon County Pennsylvania |
| | Lehigh County Pennsylvania |
| | Luzerne County Pennsylvania |
| | Lycoming County Pennsylvania |
| | McKean County Pennsylvania |
| | Mercer County Pennsylvania |
| | Mifflin County Pennsylvania |
| | Monroe County Pennsylvania |
| | Montgomery County Pennsylvania |
| | Montour County Pennsylvania |
| | Nittany Valley |
| | Northampton County Pennsylvania |
| | Northumberland County Pennsylvania |
| | Perry County Pennsylvania |
| | Philadelphia County Pennsylvania |
| | Pike County Pennsylvania |
| | Pittsburgh coal basin |
| | Potter County Pennsylvania |
| | Schuylkill County Pennsylvania |
| | Snyder County Pennsylvania |
| | Somerset County Pennsylvania |
| | Sullivan County Pennsylvania |
| | Susquehanna County Pennsylvania |
| | Tioga County Pennsylvania |
| | Union County Pennsylvania |
| | Venango County Pennsylvania |
| | Warren County Pennsylvania |
| | Washington County Pennsylvania |
| | Wayne County Pennsylvania |
| | Westmoreland County Pennsylvania |
| | Wyoming County Pennsylvania |
| | York County Pennsylvania |
| RT | Appalachian Basin |
| | Appalachian Plateau |
| | Allegheny Front |
| | Allegheny Mountains |
| | Allegheny Group |
| | Allegheny Plateau |
| | Ames Limestone |
| | Antietam Formation |
| | Baltimore Gneiss |
| | Bass Islands Dolomite |
| | Bedford Shale |
| | Beekmantown Group |
| | Berea Sandstone |
| | Big Injun Sandstone |
| | Black |