[1] Carney Island was first delineated (except for its south part) from aerial photographs taken by United States Navy Operation Highjump (OpHjp) in January 1947.

An ice-covered cape which marks the northwest extremity of Carney Island along the coast of Marie Byrd Land.

An ice-covered point lying just west of Beakley Glacier on the north side of Carney Island, along the coast of Marie Byrd Land.

Named by R. Adm. Byrd for Fleet Admiral William D. Leahy, United States Navy, who, as naval advisor to the President at the time of Operation Highjump, assisted materially at the high-level planning and authorization stages.

An ice-covered peninsula, 30 nautical miles (56 km; 35 mi) long, which forms the east part of Carney Island.