skos:altLabel | - Pennsylvania
- geology
- Gettysburg sill
- Appalachian Division, Piedmont Province, Lowland and Intermediate Upland Section
- Anthracite Upland
- Anthracite Upland section
- Anthracite Uplands
- Anthracite Valley
- Anthracite Valley Section
- Blue Mountain Geology
- Deep Valleys
- Geology of Pennsylvania#Anthracite_upland
- Geology of Pennsylvania#Glaciated_Low_Plateau
- Geology_of_Pennsylvania
- Gettysburg Newark Lowland Section
- Gettysburg-Newark Basin
- Gettysburg-Newark Lowland Section
- Gettysburg-Newark Lowlands
- Glaciated Low Plateau
- Pennsylvania's Great Valley
- Pennsylvania's great valley
- Pennsylvanian Great Valley
- Piedmont Lowland Section
- Piedmont Uplands
- Pittsburgh Low Plateau
- Southern Anthracite Region
- Trenton Gravel
- Appalachian Division, Piedmont Province, Upland Section
- Appalachian Division, Piedmont Province, Gettysburg-Newark Section
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