Brallier Formation
The Devonian Brallier Formation is a mapped bedrock unit in Pennsylvania, Maryland, West Virginia, and Virginia. ContentsDescriptionThe Brallier Formation was described by Charles Butts in 1918 as a fine-grained, siliceous shale with few fine-grained sandstone layers, from outcrops in central Pennsylvania. Others expanded usage of the term to rocks in other states. StratigraphyThe Brallier is roughly equivalent to the Scherr Formation. The contact with the underlying Harrell Formation is generally gradational. FossilsHasson and Dennison reported the following fossils from outcrops of the lower Brallier at Keyser, West Virginia, Ridgeville, West Virginia, and McCoole, Maryland: Notable ExposuresType locality is at a railway station 6 miles northeast of Everett, Bedford County, Pennsylvania. AgeRelative age dating places the Brallier in the late Devonian. ReferencesBrallier Formation Wikipedia | |||||||||
