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Tao-Rusyr Caldera

Photo of this volcano
  • Country
  • Volcanic Region
  • Landform | Volc Type
  • Last Known Eruption
  • 49.34°N
  • 154.725°E

  • 1,272 m
    4,173 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.

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.

Eruptive History

There is data available for 2 confirmed Holocene eruptive periods.

1952 Nov 12 - 1952 Nov 19 Confirmed Eruption VEI: 3

Episode 1 | Eruption Krenitsyn Peak (east flank)
1952 Nov 12 - 1952 Nov 19 Evidence from Observations: Reported

List of 6 Events for Episode 1 at Krenitsyn Peak (east flank)

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion
   - - - -    - - - - Lava dome
   - - - -    - - - - Ash
   - - - -    - - - - Lapilli
   - - - -    - - - - Earthquake (tectonic) Before eruption.
1952 Nov 12    - - - - VEI (Explosivity Index)

5550 BCE ± 75 years Confirmed Eruption VEI: 6

Episode 1 | Eruption Tao-Rusyr
5550 BCE ± 75 years - Unknown Evidence from Isotopic: 14C (uncalibrated)

List of 5 Events for Episode 1 at Tao-Rusyr

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion extremely violent or catastrophic
   - - - -    - - - - Pyroclastic flow
   - - - -    - - - - Pumice
   - - - -    - - - - Caldera Explosion
5550 BCE ± 75 years    - - - - VEI (Explosivity Index)
Deformation History

There is no Deformation History data available for Tao-Rusyr Caldera.

Emission History

There is no Emissions History data available for Tao-Rusyr Caldera.

Photo Gallery

Krenitzyn Peak is a post-caldera cone that forms a 4-km island rising above the rim of 7.5-km-wide Tao-Rusyr caldera. It has a 350 m summit crater and a large shallow crater (left center) on the upper NE flank. The small dark mass along the eastern shoreline (right-center) is a lava dome that was emplaced in 1952. Kal'tsevoe lake fills a caldera that formed about 7,500 years ago during one of the largest Holocene eruptions in the Kuril Islands.

Photo by Oleg Volynets (Institute of Volcanology, Petropavlovsk).
Snow remnants highlight dendritic drainages eroded into pyroclastic flow deposits on the flanks of Tao-Rusyr caldera on Onekotan Island in this NASA Space Shuttle image (with N to the left). The 7.5-km-wide caldera formed about 7,500 years ago during the eruption of 30-35 km3 of tephra, producing one of the largest Holocene eruptions of the Kuril Islands. Subsequently, Krenitzyn Peak was constructed in the NW part of the caldera, reaching a height well above the caldera rim.

NASA International Space Station image ISS005-E-6518, 2002 (http://eol.jsc.nasa.gov/).
The 7-km-wide Tao-Rusyr Caldera at the southern end of Onekotan Island is shown in this September 2017 Planet Labs satellite image monthly mosaic (N is at the top). The caldera formed at the summit of the broader 16-17 km diameter edifice during an eruption 7,500 years ago, and emplaced a large non-welded ignimbrite deposit. The Krenitsyn Peak cone formed in the NW side of the caldera.

Satellite image courtesy of Planet Labs Inc., 2017 (https://www.planet.com/).
GVP Map Holdings

Maps are not currently available due to technical issues.

The maps shown below have been scanned from the GVP map archives and include the volcano on this page. Clicking on the small images will load the full 300 dpi map. Very small-scale maps (such as world maps) are not included.

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, and may be availble for research (contact the Rock and Ore Collections Manager). Catalog number links will open a window with more information.

Catalog Number Sample Description Lava Source Collection Date
NMNH 116556-45 Andesite -- --
NMNH 116556-46 Andesite -- --
NMNH 116556-47 Andesite -- --
NMNH 116556-48 Dacitic Pumice -- --
NMNH 116556-49 Dacitic Pumice -- --
External Sites