page_title: Old Port Formation
hierarchical_section_title: Old Port Formation
caption_attribution_description: English: Ridgeley Member of the Old Port Formation at outcrop along Route 30 cutting through Warrior Ridge north of the town of Everett, Bedford County, Pennsylvania. Rock hammer for scale.
context_page_description: The Devonian Old Port Formation is a mapped bedrock unit in Pennsylvania, USA. Details of the type section and of stratigraphic nomenclature for this unit as used by the U.S. Geological Survey are available on-line at the National Geologic Map Database. Current nomenclature usage by U.S. Geological Survey restricts the name Old Port Formation to Pennsylvania, but correlative units are present in adjacent states.
context_section_description: The Devonian Old Port Formation is a mapped bedrock unit in Pennsylvania, USA.  Details of the type section and of stratigraphic nomenclature for this unit as used by the U.S. Geological Survey are available on-line at the National Geologic Map Database.  Current nomenclature usage by U.S. Geological Survey restricts the name Old Port Formation to Pennsylvania, but correlative units are present in adjacent states.
caption: Ridgeley Member of the Old Port Formation
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