The contact with the underlying Millboro is also gradational and is drawn where the laminated black shales of the Millboro give way to the thin-bedded shales and siltstones of the Brallier. Fossils are rare. Sometimes the color of weathered shale can be brown or red, depending on its iron content. Saprolitic shales can be nearly white. Rare beds of micritic limestone up to a few feet in thickness can be found in the field camp mapping areas.
Fossils are very rare, consisting of pelagic organisms.
Mostly a highly silicified black shale containing beds that are brecciated and recemented with amorphous silica. Glauconitic and phosphatic layers are sometimes common. Locally at the top of the Huntersville is the glauconitic Bob's Ridge Sandstone, which is approximately 3 feet thick. Fossils may be present, but they are not common. Some exposures have silica cement rather than calcite cement.