Tao-Rusyr Caldera

Photo of this volcano
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 49.35°N
  • 154.7°E

  • 1325 m
    4346 ft

  • 290310
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

Most Recent Bulletin Report: April 1987 (SEAN 12:04) Citation IconCite this Report


No fumarolic activity

During an aerial survey on 2 November 1986 the summit crater [of Krenitzyn] was covered with snow. There was no indication of fumarolic activity in the summit area or in the area of the 1952 E-flank eruption.

Information Contacts: G. Steinberg and B. Piskunov, Yuzhno-Sakhalinsk.

The Global Volcanism Program has no Weekly Reports available for Tao-Rusyr Caldera.

Bulletin Reports - Index


Reports are organized chronologically and indexed below by Month/Year (Publication Volume:Number), and include a one-line summary. Click on the index link or scroll down to read the reports.

04/1987 (SEAN 12:04) No fumarolic activity




Information is preliminary and subject to change. All times are local (unless otherwise noted)


April 1987 (SEAN 12:04) Citation IconCite this Report


No fumarolic activity

During an aerial survey on 2 November 1986 the summit crater [of Krenitzyn] was covered with snow. There was no indication of fumarolic activity in the summit area or in the area of the 1952 E-flank eruption.

Information Contacts: G. Steinberg and B. Piskunov, Yuzhno-Sakhalinsk.

Eruptive History


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


Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1952 Nov 12 1952 Nov 19 Confirmed 3 Historical Observations Krenitzyn Peak (east flank)
5550 BCE ± 75 years Unknown Confirmed 6 Radiocarbon (uncorrected) Tao-Rusyr

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


A large symmetrical post-caldera cone, 1325-m-high Krenitzyn Peak, forms a 4-km wide island that towers above the rim of 7.5-km-wide Tao-Rusyr caldera. A 350-m-wide crater caps the peak, and a large shallow lateral crater (left center) is located on the upper NE flank. The small dark mass along the eastern shoreline (right-center) is a lava dome that was emplaced in 1952 during the only historical eruption of the volcano. Kal'tsevoe lake fills a caldera that was formed about 7500 years ago during one of the largest Holocene eruptions in the Kuril Islands.

Photo by Oleg Volynets (Institute of Volcanology, Petropavlovsk).
See title for photo information.
Summer snow remnants highlight dendritic drainages cutting pyroclastic-flow deposits on the flanks of Tao-Rusyr caldera on Onekotan Island in this NASA Space Shuttle image (with north to the left). The 7.5-km-wide caldera was formed about 7500 years ago accompanied by the eruption of 30-35 cu km of tephra during one of the largest Holocene eruptions of the Kuril Islands. Subsequently Krenitzyn Peak stratovolcano was constructed in the NW part of the caldera, reaching a height well above the caldera rim.

NASA Space Shuttle image ISS005-E-6518, 2002 (http://eol.jsc.nasa.gov/).
See title for photo information.

Smithsonian Sample Collections Database


The following 5 samples associated with this volcano can be found in the Smithsonian's NMNH Department of Mineral Sciences collections. Catalog number links will open a window with more information.

Catalog Number Sample Description
NMNH 116556-45 Andesite
NMNH 116556-46 Andesite
NMNH 116556-47 Andesite
NMNH 116556-48 Dacite pumice
NMNH 116556-49 Dacite pumice

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