The only earth movement that Jeff and Michelle Seaman have noticed is the large gash dug by excavators and pipeliners in their backyard 50 feet from the pool where Ms. Seaman likes to float. On the ...

LANCASTER, Pa. — A low-flying airplane or helicopter will be visible as early as this weekend as the United States Geological Survey (USGS) launches a new survey of parts of Pennsylvania, Maryland, ...

Part of the Pennsylvania State University and a division of the Penn State University Libraries and Scholarly Communications, Penn State University Press serves the University community, the citizens ...

Geologist Jeri Jones will lead a field trip, “Your Backyard Geology” on Saturday, May 16, from 8:30 a.m. to 4 p.m. Hosted by ...

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 ...

Since 1836, the Pennsylvania Geological Survey has explored almost every region of the state deciphering the record of past geological events and searching out the natural geologic resources that ...

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.