| Map 007 |
 | Geologic map of Pennsylvania (color)byPennsylvania Geological Survey1990 |
| Suggested Citation: | Pennsylvania Geological Survey, 1990, Geologic map of Pennsylvania (3rd ed.): Pennsylvania Geological Survey, 4th ser., Map 7, scale 1:2,000,000. [Available online.] |
| Description: | A page-size bedrock geologic map displaying the geologic age (period) of the underlying rock in areas across the state. For each time period shown, the explanation lists the year range in millions of years before present, the associated rock types, and (except for oil and gas) the associated mineral resources. |
| Download Publication: | Click Here (2 MB) |