Brallier Formation

Brallier Formation
Stratigraphic range: Frasnian - Famennian
Outcrop of Brallier Formation on north side of Pennsylvania Turnpike, central Bedford County, near Mile Marker 138
Typesedimentary
Sub-unitsBlack Creek Siltstone Member, Minnehaha Springs Member
UnderliesGreenland Gap Group and Scherr Formation
OverliesHarrell Formation
Thickness1350 to 1800 feet in central PA
Lithology
Primaryshale, sandstone
Location
RegionAppalachian Mountains
CountryUnited States
ExtentMaryland, Pennsylvania, Virginia, and West Virginia
Type section
Named byCharles Butts, 1918

The Devonian Brallier Formation is a mapped bedrock unit in Pennsylvania, Maryland, West Virginia, and Virginia.

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