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Encore Lecture of ‘Cool Geology on the Northwest River Trail’

July 29 at 6:30 pm - 8:00 pm

Encore Lecture “Cool Geology on the Northwest River Trail” by Jeri Jones

Susquehanna NHA Lecture by Jeri Jones of ‘Cool Geology on the Northwest River Trail’ has been rescheduled from Wednesday, May 13th to Wednesday, July 29th. The lecture has also been moved from the Zimmerman Center for Heritage to Columbia Crossing River Trails Center. We feel that this decision is the best avenue to protect our staff and attendees of the event during the COVID-19 pandemic.

Back by popular demand, York County geologist Jeri Jones presents an encore of his lecture “Cool Geology on the Northwest River Trail”

Along with sights that are obvious to hikers and bikers on the popular trail, like Chickies Rock and the “White cliffs of Conoy”, Jeri will delve into fascinating features that otherwise may pass unnoticed, like vertical ripple marks on the face of Chickies Rock that were sand on a beach almost 550 million years ago, and horizons in time, where in one step trail walkers move from rocks that were formed 300 million years apart.

Jones has spent more than forty years studying the enormous forces and events that over the course of millions of years created the landscape we see today. His presentation will blend geology and history through his descriptions of operations and structures that utilized stone and processed minerals from geologic formations along the trail and took advantage of the opportunities the river presented to produce and transport products by rail and canal.

In addition to the lecture, Jones will be unveiling his new book, “Geologic Guide to the Northwest Lancaster County River Trail”. The guide describes more than twenty-five points of interest along the 14-mile trail that follows the river from Columbia to Falmouth and provides trail users a fascinating self-guided tour of the geologic features they encounter along the way. Sponsored by Susquehanna National Heritage Area and Rivertownes PA USA, the guide will be available at Columbia Crossing River Trails Center, the Zimmerman Center for Heritage, and through Rivertownes PA USA.


July 29
6:30 pm - 8:00 pm


Columbia Crossing River Trails Center
41 Walnut Street
Columbia, PA 17512 United States


Susquehanna Heritage