Scientists discover tool that could detect geological events before they strike - Natural sinkholes threaten 20 percent of ...

In this part of Pennsylvania, subsidence is commonly associated with coal mining: When coal is removed from the earth, it leaves voids in its wake. Some collapse right away, sinking the surface above.

The $148,000 award supports collaborative research and community outreach on Pennsylvania’s Devonian fossil record.

Vol. II, pt. I-II, paged continuously. Accompanied by 2 folded maps: "Geological and topographical map of the anthracite fields ..." and "Geological map of the state ..." "On the origin and ...

Due to the little rain Pennsylvania received over the summer, residents should be aware of the dry conditions and be mindful ...