Butler Rocks
Encyclopedia
Butler Rocks are two rock nunatak
s, 910 metre high, standing 2.5 miles (4 km) southwest of Vanguard Nunatak
in the northern Forrestal Range
, Pensacola Mountains
. They were mapped by the United States Geological Survey
from surveys and from U.S. Navy air photos, 1956–66, and named by the Advisory Committee on Antarctic Names
for William A. Butler, aerographer, Ellsworth Station
winter party, 1957.
Nunatak
A nunatak is an exposed, often rocky element of a ridge, mountain, or peak not covered with ice or snow within an ice field or glacier. The term is typically used in areas where a permanent ice sheet is present...
s, 910 metre high, standing 2.5 miles (4 km) southwest of Vanguard Nunatak
Vanguard Nunatak
Vanguard Nunatak is a conspicuous cone-shaped nunatak standing at the northern extremity of the Forrestal Range, Pensacola Mountains in Antarctica. It was mapped by United States Geological Survey from surveys and U.S...
in the northern Forrestal Range
Forrestal Range
The Forrestal Range is a largely snow-covered mountain range, about 105 km long, standing east of Dufek Massif and the Neptune Range in the Pensacola Mountains of Antarctica. Discovered and photographed on January 13, 1956 on a transcontinental patrol plane flight of U.S...
, Pensacola Mountains
Pensacola Mountains
The Pensacola Mountains are a large group of mountain ranges and peaks in Antarctica, extending 450 km in a NE-SW direction, comprising the Argentina Range, Forrestal Range, Dufek Massif, Cordiner Peaks, Neptune Range, Patuxent Range, Rambo Nunataks and Pecora Escarpment...
. They were mapped by the United States Geological Survey
United States Geological Survey
The United States Geological Survey is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization has four major science disciplines, concerning biology,...
from surveys and from U.S. Navy air photos, 1956–66, and named by the Advisory Committee on Antarctic Names
Advisory Committee on Antarctic Names
The Advisory Committee on Antarctic Names is an advisory committee of the United States Board on Geographic Names responsible for recommending names for features in Antarctica...
for William A. Butler, aerographer, Ellsworth Station
Ellsworth Station
The Ellsworth Station was an Antarctic base established by the United States during the 1957 International Geophysical Year. The base was soon handed over to Argentina and subsequently abandoned and covered with ice in 1962.-History:...
winter party, 1957.