1. Basement Depth and Related Geospatial Database for Pennsylvania;Alexander,2005
2. The electrical resistivity log as an aid in determining some reservoir characteristics;Archie;Petrol. Trans. AIME.,1942
3. Appalachian plateaus;Beardsley,1999
4. Geologic map of Pennsylvania;Berg,1980
5. The Impact of Marcellus Gas Drilling on Rural Drinking Water Supplies;Boyer,2012