Thursday April 23rd, 2026 * 7:00 PM – 8:00 PM

Rocks Beneath Your Feet

Admission is free and all are welcome | Held at the Church of Apostles, Waynesboro

Jeri Jones of Jones Geological Services from Spring Grove, Pa. will present an illustrated talk focused on our neighborhood *terranes and examine the rocks and minerals that are found in the Great Valley, South Mountain and the western section of the Piedmont in Adams, Cumberland and Franklin counties.

The geologic history covered ranges from 600 million–160 million years ago.

Highlights include volcanoes, dinosaurs and caves.

“We will probably throw in a tearing-apart of a continent at some point,” Jones said.

The program will be a good introduction for our May 16th bus trip.

Find information on the bus trip here.

Audience questions are welcome.

*According to Merriam-Webster, a terrane is defined as a specific area of surface characterized by a particular rock type or group of rocks.

A geologist for more than 45 years, Jones has conducted extensive research on Pennsylvania mining practices, authored several publications, and narrated a 3-part video series on regional geology known as “TimeWalk.”

He has been on the faculties of several regional colleges.