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The Global Volcanism Program has no activity reports for Ivao Group.
The Global Volcanism Program has no Weekly Reports available for Ivao Group.
The Global Volcanism Program has no Bulletin Reports available for Ivao Group.
The Ivao group of cones along the Krishtofovich Ridge of SW Urup Island contains several well-preserved cones of Holocene age. The first of a group of three young cones that formed along a NW-SE line is 1426-m-high Ivao cone, which marks the high point of Urup Island at the NW end of the chain. The SE-most cone bisects a glacial valley, forming Lake Ivao. The elongated central cone, Krutaya Mountain, is the youngest, and produced a viscous lava flow that traveled to the east.
The Global Volcanism Program is not aware of any Holocene eruptions from Ivao Group. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Ivao Group 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.
|Feature Name||Feature Type||Elevation||Latitude||Longitude|
|The Ivao group of cones (left of center) occupies part of the Krishtofovich Ridge of SW Urup Island in this NASA Space Shuttle image (with north to the upper right). The 1426-m-high Ivao cone marks the high point of Urup Island. This young volcanic complex fed Holocene lava flows that traveled north to the Sea of Okhotsk. The youngest cone of the Ivao group, Krutaya Mountain, produced a viscous lava flow that traveled to the east.
NASA Space Shuttle image ISS006-E-26195, 2003 (http://eol.jsc.nasa.gov/).
The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title.
Gorshkov G S, 1970. Volcanism and the Upper Mantle; Investigations in the Kurile Island Arc. New York: Plenum Publishing Corp, 385 p.