The Global Volcanism Program has no activity reports for Raususan [Mendeleev].

The Global Volcanism Program has no Weekly Reports available for Raususan [Mendeleev].

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Raususan, also known as Mendeleev, is a low compound stratovolcano located in the southern part of Kunashir Island. The dominantly andesitic-dacitic volcano is cut by two nested calderas, the larger 6-7 km in diameter and the smaller 3-3.5 km. A central cone that formed inside the younger caldera was breached to the west by a large debris avalanche about 4200 years ago. A lava dome that grew inside the avalanche scarp forms the 888 m high point of the volcano. Additional lava domes in the northern part of the older caldera are considered to represent flank activity of the younger caldera. The only unambiguous historical eruption was a small phreatic explosion in 1880. Four solfatara fields lie at the eastern and northern flanks of the central cone, and a geothermal field is located outside the caldera along the eastern coast.

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

Start Date	Stop Date	Eruption Certainty	VEI	Evidence	Activity Area or Unit
[ 1900 ]	[ Unknown ]	Uncertain	2
1880	Unknown	Confirmed	1	Historical Observations	NE solfatara field
2270 BCE ± 50 years	Unknown	Confirmed		Radiocarbon (uncorrected)	West side of central cone, KnIV-10 tephra

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.

Synonyms
Louse | Rausu-dake | Rouse | Simanobori | Mendeleyev | Kunashiri-Rausu | Raususan | Mendeleev
Craters
Feature Name	Feature Type	Elevation	Latitude	Longitude
Koraususan	Caldera
Domes
Feature Name	Feature Type	Elevation	Latitude	Longitude
Raususan	Dome	882 m	43° 58' 44" N	145° 43' 57" E
Thermal
Feature Name	Feature Type	Elevation	Latitude	Longitude
Goriachy Pliazh	Thermal

The last major eruption of Mendeleev volcano, about 4200 years ago, was similar in several regards to the 1980 Mount St. Helens eruption. Collapse of the central cone produced a debris avalanche and left a horseshoe-shaped crater breached to the west. Pyroclastic flows accompanied growth of a lava dome in the new crater. This dacitic dome (right) forms the 887-m high point of Mendeleev volcano. Steam rises above a NW-flank fumarolic area (center), one of several thermal areas on the flanks of the central cone. Photo by Yuri Doubik (Institute of Volcanology, Petropavlovsk).
Brilliantly colored deposits of elemental sulfur surround fumarolic vents on the NW side of the central cone of Mendeleev volcano, in the southern Kuril Islands. Fumarolic areas on Mendeleev are associated with lateral craters at this location and at several areas from the NE to SE flanks, where the central cone meets the inner caldera wall of Mendeleev. Hot springs occur on the NE flank and along the NE coast, where the Goriachi-Pliazh geothermal field is located. Photo by Yuri Doubik (Institute of Volcanology, Petropavlovsk).
Mendeleev, also known as Rausu-dake, is a compound stratovolcano with two nested calderas, the larger 6-7 km in diameter and the smaller 3-3.5 km. A central cone that formed inside the younger caldera is seen here from the east, near the settlement of Yuzhno-Kurilsk. The only unambiguous historical eruption was a small phreatic explosion in 1880. The Goriachy Pliazh geothermal field is located outside the caldera along the Pacific coast. Photo by Oleg Volynets (Institute of Volcanology, Petropavlovsk).
Mendeleev volcano on the southern part of Kunashir Island towers above the village of Yuzhno-Kurilsk. Steam plumes rise above geothermal wells on the volcano's NW flanks, in one of several geothermal fields flanking the volcano. The volcano seen here lies within a 6-7 km wide caldera. The only unambiguous historical eruption from Mendeleev was a small phreatic explosion in 1880. Photo by Alexander Rybin, 2001 (Institute of Marine Geology and Geophysics, Yuzhno-Sakhalin).

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.

Erlich E N, 1986. Geology of the calderas of Kamchatka and Kurile Islands with comparison to calderas of Japan and the Aleutians, Alaska. U S Geol Surv Open-File Rpt, 86-291: 1-300.

Gorshkov G S, 1958. Kurile Islands. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 7: 1-99.

Gorshkov G S, 1970. Volcanism and the Upper Mantle; Investigations in the Kurile Island Arc. New York: Plenum Publishing Corp, 385 p.

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..

Japan Meteorological Agency, 1996. National Catalogue of the Active Volcanoes in Japan (second edition). Tokyo: Japan Meteorological Agency, 502 p (in Japanese).

Japan Meteorological Agency, 2013. National Catalogue of the Active Volcanoes in Japan (fourth edition, English version). Japan Meteorological Agency.

Nakano S, Yamamoto T, Iwaya T, Itoh J, Takada A, 2001-. Quaternary Volcanoes of Japan. Geol Surv Japan, AIST, http://www.aist.go.jp/RIODB/strata/VOL_JP/.

Raszhigaeva N G, Korokty A M, Sulerzhitsky L D, Grebennikova T A, Ganzei L A, Bazarova V B, 1999. Late Pleistocene tephra around Golovnin volcano, Kunashir I. (Kuril Islands). Volc Seism, 20: 127-254 (English translation).

Raszhigaeva N G, Korotky A M, Sulerzhitsky L D, Grebennikova T A, Ganzei L A, Mokhova L M, Bazarova V B, 1998. Holocene tephra of Kunashir I. (Kuril Islands). Volc Seism, 20: 48-63 (English translation).

Vlasov G M, 1967. Kamchatka, Kuril, and Komandorskiye Islands: geological description. In: {Geol of the USSR}, Moscow, 31: 1-827.

Volcano Types Stratovolcano Caldera Lava dome(s) Tectonic Setting Subduction zone Intermediate crust (15-25 km) Rock Types Major Andesite / Basaltic Andesite Dacite Basalt / Picro-Basalt Population Within 5 km Within 10 km Within 30 km Within 100 km 236 1,783 3,527 114,486

Affiliated Databases Large Eruptions of Raususan [Mendeleev] Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA). WOVOdat WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore. EarthChem EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS). Smithsonian Collections Search the Smithsonian's NMNH Department of Mineral Sciences collections database. Go to the "Search Rocks and Ores" tab and use the Volcano Name drop-down to find samples.