Weiss Amphitheater () is an amphitheater-like
caldera
A caldera ( ) is a large cauldron-like hollow that forms shortly after the emptying of a magma chamber in a volcano eruption. When large volumes of magma are erupted over a short time, structural support for the rock above the magma chamber is ...
, 2 nautical miles (3.7 km) wide and breached at the southern side, occupying the south-central part of
Mount Sidley
Mount Sidley is the highest dormant volcano in Antarctica, a member of the Volcanic Seven Summits, with a summit elevation of . It is a massive, mainly snow-covered shield volcano which is the highest of the five volcanic mountains that comprise ...
, in the
Executive Committee Range
The Executive Committee Range is a mountain range consisting of five major volcanoes, which trends north-south for along the 126th meridian west, in Marie Byrd Land, Antarctica.
The complete range was discovered by the United States Antarctic Ser ...
,
Marie Byrd Land. It was mapped by the
United States Geological Survey
The United States Geological Survey (USGS), formerly simply known as the 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, ...
(USGS) from surveys and U.S. Navy
trimetrogon
Trimetrogon is an aerial photographic survey method that involves the use of three cameras in one assembly. One camera is pointed directly downwards, and the other two are pointed to either side of the flight path at a 30° depression angle (60° ...
photography, 1958–60. It was named by the
Advisory Committee on Antarctic Names (US-ACAN) for Bernard D. Weiss, Meteorologist-in-Charge at
Byrd Station, 1959.
Volcanoes of Marie Byrd Land
Executive Committee Range
Calderas of Antarctica
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