Cordiner Peaks

The Cordiner Peaks (-82.8°N, -53.5°W) are a group of peaks extending over an area of 6 nmi standing 8 nmi southwest of Dufek Massif in the northern part of the Pensacola Mountains, Antarctica.

Discovery and name
The Cordiner Peaks were discovered and photographed on January 13, 1956, in the course of a transcontinental nonstop plane flight by personnel of United States Navy Operation Deep Freeze I from McMurdo Sound to the Weddell Sea and return. They were named by the United States Advisory Committee on Antarctic Names for Captain Douglas L. Cordiner, U.S. Navy, an observer on the P2V-2N Neptune aircraft making this flight. The entire Pensacola Mountains were mapped by the United States Geological Survey (USGS) in 1967 and 1968 from ground surveys and from United States Navy tricamera aerial photographs taken in 1964.

Location
The Cordiner Peaks are to the east of the mouth of the Foundation Ice Stream on the Ronne Ice Shelf. The Jaburg Glacier flows westward past their north side, to the south of the Dufek Massif. They are north of the Spanley Rocks at the north end of the Neptune Range. Features, from north to south, include Rosser Ridge, Sumrall Peak and Jackson Peak.

Jaburg Glacier
-82.7°N, -53.41667°W. A broad glacier draining westward between Dufek Massif and Cordiner Peaks. Mapped by USGS from surveys and United States Navy air photos, 1956-66. Named by US-ACAN for Lieutenant Conrad J. Jaburg, United States Navy, helicopter pilot, Ellsworth Station winter party, 1957.

Rosser Ridge
-82.76667°N, -53.58333°W. A rock ridge, 4 nmi long, marking the north limit of the Cordiner Peaks. Mapped by USGS from surveys and United States Navy air photos, 1956-66. Named by US-ACAN for Earl W. Rosser, topographic engineer in the Pensacola Mountains, 1965-66.

Sumrall Peak
-82.8°N, -53.55°W. A peak, 1,130 m high, standing 1 nmi south of Rosser Ridge in the Cordiner Peaks. Mapped by USGS from surveys and United States Navy air photos, 1956-66. Named by US-ACAN for Ens. William H. Sumrall, United States Navy Reserve, airplane pilot, Ellsworth Station winter party, 1957.

Jackson Peak
-82.83333°N, -53.58333°W. A peak, 1,255 m high, standing 2 nmi south of Sumrall Peak. Mapped by USGS from surveys and United States Navy air photos, 1956-66. Named by US-ACAN for Allen M. Jackson, aviation electronics technician, Ellsworth Station winter party, 1957.