Itasy Volcanic Field

Photo of this volcano
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 19°S
  • 46.77°E

  • 1800 m
    5904 ft

  • 233014
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Itasy Volcanic Field.

The Global Volcanism Program has no Weekly Reports available for Itasy Volcanic Field.

The Global Volcanism Program has no Bulletin Reports available for Itasy Volcanic Field.

Eruptive History


Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).


Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
6050 BCE (in or before) Unknown Confirmed   Radiocarbon (uncorrected)
7130 BCE ± 100 years Unknown Confirmed   Radiocarbon (uncorrected)

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


The Itasy volcanic field in central Madagascar lies west of Lake Itasy (lower-center) and consists of a N-S-trending chain of scoria cones, lava domes, and maars. Several small dark-colored lake-filled maars can be seen in the NASA Landsat image (with north to the top), one of which lies just above the NW arm of Lake Itasy. Early eruptions producing trachytic lava domes and basanitic lava flows were followed by the effusion of trachytic lava flows and recent vulcanian eruptions. Mild seismicity and hot spring activity continue at Itasy.

NASA Landsat7 image (worldwind.arc.nasa.gov)
See title for photo information.

Smithsonian Sample Collections Database


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

Affiliated Sites