York County Geology
Course | Registration opens 5/14/2026 8:00 AM EDT
Journey through time to discover the literal 'bedrock' of York County. This course will detail the rock types, minerals, geologic hazards, and the geologic history of York County. It will feature some of the best rock exposures in the area.
Jeri Jones
Jeri Jones has forty-eight years of experience in geology research and frequently leads groups on geology field trips. He has traveled throughout the country conducting trips and programs for all ages. Jones worked for York County Parks for thirty-eight years before retiring in 2017. He previously taught at HACC-Gettysburg, York College of Pennsylvania, and Messiah University. He has authored five books, narrated a geologic education video series, and written numerous articles.