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Rausudake is an andesitic-to-dacitic stratovolcano with summit lava domes on the Shiretoko Peninsula in NE Hokkaido. The 1660-m-high volcano is located along a ridge 5 km SW of Shiretoko-Iozan volcano, the NE-most Holocene volcano in Hokkaido. Young lava flows descend the NW flank and broad areas along the SE flank, and an older lava flow traveled about 9 km W, reaching the coast of the Sea of Okhotsk along a broad front. Eruptions produced pumiceous tephras with associated pyroclastic flows about 2200, 1400, and 800 years ago. Recent work has documented a pyroclastic-flow deposit that overlies the 1739 tephra from Tarumai volcano in SW Hokkaido. Stratigraphic relationships place this eruption, the most recent known from Rausudake, between about 1750 and 1850 CE.
Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|1800 ± 50 years||Unknown||Confirmed||3||Tephrochronology|
|1350 ± 100 years||Unknown||Confirmed||3||Radiocarbon (corrected)||Ra1 tephra|
|0550 ± 100 years||Unknown||Confirmed||4||Radiocarbon (corrected)||Ra2 tephra|
|0080 ± 50 years||Unknown||Confirmed||3||Radiocarbon (corrected)||SW flank (Tencho-zan), Ten-a tephra|
|0270 BCE ± 100 years||Unknown||Confirmed||Radiocarbon (corrected)||Ra3-Ra8 tephras|
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.
|Rausu-dake | Rausu|
|Rausu volcano, seen here from the SW at Shiretoko Pass, is a small stratovolcano in NE Hokkaido. Rausu is located 5 km SW of Shiretoko-Iwo-san volcano along the crest of the elongated NE-trending ridge forming the Shiretoko Peninsula. Explosive eruptions have taken place several times during the Holocene, including eruptions of pumiceous tephras about 2200 and 1500 years ago. Recent work has documented a pyroclastic-flow deposit from Rausu that overlies the 1739 tephra from Tarumai volcano.
Copyrighted photo by Yoshihiko Goto (Japanese Quaternary Volcanoes database, RIODB, http://riodb02.ibase.aist.go.jp/strata/VOL_JP/EN/index.htm and Geol Surv Japan, AIST, http://www.gsj.jp/).
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.
IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..
Japan Association Quaternary Research, 1987. Quaternary Maps of Japan: Landforms, Geology, and Tectonics. Tokyo: Univ Tokyo Press.
Japan Meteorological Agency, 2013. National Catalogue of the Active Volcanoes in Japan (fourth edition, English version). Japan Meteorological Agency.
Kudo T, Hoshizumi H, 2006-. Catalog of eruptive events within the last 10,000 years in Japan, database of Japanese active volcanoes. Geol Surv Japan, AIST, http://riodb02.ibase.aist.go.jp/db099/eruption/index.html.
Miyaji N, Nakagawa M, Yoshida M, 2000. Eruptive history of Rausudake volcano during the last 2200 years. Bull Volc Soc Japan (Kazan), 45: 75-85 (in Japanese with English abs).
Miyaji N, Nakagawa M, Yoshida M, 1995. Tephrochronology of Rausu volcano during past 2,000 years. Joint Mtg Earth Sci, 1995, Abs, (in Japanese).
Nakamura Y, Marumo M, Hirakawa K, Sawagaki T, 2008. Holocene tephrostratigraphy in the Shiretoko Peninsula, Hokkaido, Japan. Quat Res, 47: 39-49 (in Japanese with English abs).
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/.