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Geologic Mapping in Central Pennsylvania
Bedrock geologic mapping is ongoing in the Ridge and Valley physiographic province of Pennsylvania.

Ongoing and recent mapping in Central Pennsylvania.
See a related article in Pennsylvania Geology magazine (v. 36, no. 2) “Geology of Oz—aka the U.S. Route 22–522 Industrial Drive Interchange.”*
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| Thomas McElroy investigates an outcrop of Bald Eagle Formation in central Pennsylvania. |
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Don Hoskins looks over an outcrop exposing the Antes shale-Coburn Formation contact.
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For more information, contact
the Survey at 717–702–2017.
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