page_title: Juniata Formation
section_title: Description
hierarchical_section_title: Juniata Formation / Description
caption_attribution_description: English: Slickensides on a sample of sandstone of the Juniata Formation, from an outcrop on Rt 322 northeast of State College, Pennsylvania
context_page_description: The Ordovician Juniata Formation is a mapped bedrock unit in Pennsylvania and Maryland. It is a relative slope-former occurring between the two prominent ridge-forming sandstone units: the Tuscarora Formation and the Bald Eagle Formation in the Appalachian Mountains.
context_section_description: The Juniata is defined as a grayish-red to greenish-gray, thin- to thick-bedded siltstone, shale, and very fine to medium-grained crossbedded sandstone or subgraywacke and protoquartzite with interbedded conglomerate.
  The Juniata is a lateral equivalent of the Queenston Shale in western Pennsylvania.
caption: Sample from roadcut on U.S. Route 322 near State College, Pennsylvania, showing slickensides
exif: {}