wall rock

Wall Rock is a rock 4 nautical miles (7 km) north of Robbins Nunatak in the Schmidt Hills portion of the Neptune Range, Pensacola Mountains. Mapped by United States Geological Survey (USGS) from surveys and U.S. Navy air photos, 1956-66. Named by Advisory Committee on Antarctic Names (US-ACAN) for John Wall, a member of the Electronic Test Unit in the Pensacola Mountains, 1957-58.

Wall rock is the rock that constitutes the wall of an area undergoing geologic activity. Examples are the rock along the neck of a volcano, on the edge of a pluton that is being emplaced, along a fault plane, enclosing a mineral deposit, or where a vein or dike is being emplaced.