Pound Sandstone Member here named for stream 3.2 km from type section near Judy Gap and assigned to newly named Foreknobs Formation (Greenland Gap Group). Unit consists fine-to medium-grained, cross-bedded sandstone with some conglomeratic layers; weathers light olive gray with some siltstone partings. Interpreted as barrier deposit sandstone, produced by waves winnowing finer sediments. Underlies unnamed member of Foreknobs; overlies Blizzard Member of Foreknobs. 116 ft (35 m) thick at type. Thickness ranges from 23 ft (7 m) at LaVale to 193 ft (59 m) at Mouth of Seneca. Age is Late Devonian.

Source: GNU records (USGS DDS-6; Reston GNULEX).

Uppermost members of Foreknobs Formation, Pound and Red Lick, are retained as members of the Greenland Gap Formation in the subsurface of WV, west of the Allegheny Front. Foreknobs and Scherr Formations are not recognized in study area, hence Greenland Gap is extended to this area at formation rank and replaces use of term "Chemung."

Source: GNU records (USGS DDS-6; Reston GNULEX).

In south-central PA, the Minnehaha Springs Member of the Scherr Formation and the Mallow, Briery Gap, Blizzard, Pound, and Red Lick Members of the Foreknobs Formation of the Greenland Gap Group are recognized. Pound Member is composed of gray, fine- to medium-grained, cross-bedded sandstone with minor siltstone, shale, and conglomerate. Commonly contains SPINATRYPA SPINOSA, SPINATRYPA HYSTRIX, "CAMAROTOECHIA" sp., CYRTOSPIRIFER CHEMUNGENSIS, and CYRTOSPIRIFER INERMIS. Fossils indicate high energy, near-shore environments. Coarse-grained, trough cross-bedded, hummocky cross-stratified sandstones indicate deposition in delta front and shallow shelf environments reworked by waves and currents.

Source: GNU records (USGS DDS-6; Reston GNULEX).

The term Foreknobs Formation is not used in the stratigraphic cross section south of Gap Mills, WV. Arbitrary cutoffs are drawn where diagnostic characteristics are lost by facies change. The Mallow Member coarsens upward and also becomes finer grained toward the southwest. Cutoffs of the base of the Mallow Member are drawn between Alleghany and White Sulphur Springs. All sandstone in the Mallow, Briery Gap, Blizzard, and Pound Members is lost southwest of White Sulphur Springs resulting in an arbitrary cutoff of the base of the Foreknobs, which jumps up to the base of the Red Lick Member near Gap Mills. The Red Lick then loses all of its sandstone between Gap Mills and Bluefield.

Source: GNU records (USGS DDS-6; Reston GNULEX).