Toney Mountain

Photo of this volcano
  • Antarctica
  • Antarctica
  • Shield
  • Unknown - Evidence Uncertain
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 75.8°S
  • 115.83°W

  • 3595 m
    11792 ft

  • 390026
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Toney Mountain.

The Global Volcanism Program has no Weekly Reports available for Toney Mountain.

The Global Volcanism Program has no Bulletin Reports available for Toney Mountain.

The Global Volcanism Program is not aware of any Holocene eruptions from Toney Mountain. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Toney Mountain page in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.

Photo Gallery


Toney Mountain in east-central Marie Byrd Land is a linear, E-W-trending volcanic massif with a 3-km-wide summit caldera and several satellitic cinder cones. The age of the most recent eruption of the volcano is not known precisely, but some of the ash bands in the Byrd Station ice core that were deposited within the past 30,000 years may have been from Toney Mountain, and Holocene activity is possible. Several small cinder cones occur along the crest of the 14-km-long massif, which is almost entirely mantled by glaciers.

Photo by Oscar González-Ferrán (University of Chile).
See title for photo information.

Smithsonian Sample Collections Database


There are no samples for Toney Mountain in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

Affiliated Sites