Charles Butts, 1918
| United States|
| Black Creek Siltstone Member, Minnehaha Springs Member|
1350 to 1800 feet in central PA
The Devonian Brallier Formation is a mapped bedrock unit in Pennsylvania, Maryland, West Virginia, and Virginia.
Brallier Formation Wikipedia
The 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.
The Brallier is roughly equivalent to the Scherr Formation.
The contact with the underlying Harrell Formation is generally gradational.
Hasson and Dennison reported the following fossils from outcrops of the lower Brallier at Keyser, West Virginia, Ridgeville, West Virginia, and McCoole, Maryland:Bivalvia: Buchiola retrostriata, Paracardium doris, Pterochaenia fragilis
Cephalopoda: Bactrites, Orthoceras filosum
Cricoconarida: Styliolina fissurella
Annelida: Pteridichnites biseriatus
Type locality is at a railway station 6 miles northeast of Everett, Bedford County, Pennsylvania.
Relative age dating places the Brallier in the late Devonian.