The Marietta Community House, 264 W. Market St., Marietta, will present its free Autumn Town Talk on Sunday, Oct. 11, at 2:30 p.m. in the gym/Studio 264 at the rear of the house.
Jeri Jones, who owns Jones Geological Services in Spring Grove, will present an encore of his lecture "Cool Geology on the Northwest River Trail." Along with well-known sites like Chickies Rock and the White Cliffs of Conoy, Jones will speak about features that may pass unnoticed, like vertical ripple marks on the face of Chickies Rock.
His presentation will blend geology and history through descriptions of operations and structures that utilized stone and processed minerals from geologic formations along the trail and took advantage of the opportunities the Susquehanna River presented to produce and transport products by rail and canal.
In addition to the lecture, Jones will unveil his new book, "Geologic Guide to the Northwest Lancaster County River Trail." The guide describes more than 25 points of interest along the 14-mile trail that follows the river from Columbia to Falmouth. Sponsored by Susquehanna National Heritage Area and Rivertownes PA USA, the guide will be available at Columbia Crossing River Trails Center, at the Zimmerman Center for Heritage, and through Rivertownes PA USA. Copies of the guide will also be available for purchase after the Town Talk.
Jones, a native of York, has spent more than 40 years studying the forces and events that created the landscapes people see today. He earned a degree in geoarchaeology from Catawba College in North Carolina. He has taught at area colleges and conducted field trips and programs for people of all ages. He has written four books and contributed to numerous other publications. Jones received the Digman Award for Geologic Excellence from the Eastern Chapter of the National Association of Geoscience Teachers.
Current regulations for meetings in Pennsylvania will be observed, and attendees are asked to wear a mask. Studio 264 is not handicapped-accessible.
The board of the Marietta Community House sponsors Town Talks as a community service in accordance with the organization's mission to promote the spiritual, intellectual, educational, social and physical welfare of men, women and children.
For more information, readers may visit http://www.mariettacommunityhouse.org.
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