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  • Japan
  • Hokkaido
  • Stratovolcano(es)
  • 1898 CE
  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 43.453°N
  • 143.036°E

  • 2013 m
    6603 ft

  • 285061
  • Latitude
  • Longitude

  • Summit

  • Volcano

There are no activity reports for Maruyama.

 Available Weekly Reports

There are no Weekly Reports available for Maruyama.

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

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1898 Dec 3 (?) 1898 Dec 6 Confirmed 2 Historical Observations Maru-yama (No. 1 crater)
1700 BCE (?) Unknown Confirmed 2 Radiocarbon (corrected) Maru-yama, My-b tephra

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. 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. Additional discussion of data sources can be found under Volcano Data Criteria.

Hasegawa T, Ishii E, Nakagawa M, 2008. Correlations of distal ash layers in the Akan pyroclastic deposits, eastern Hokkaido, with large-scale pyroclastic flow deposits distributed in central Hokkaido, Japan. J Geol Soc Japan, 114: 366-381 (in Japanese with English abs).

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

Ishii E, Nakagawa M, Saito H, Yamamoto A, 2008. The Pleistocene Tokachimistumata caldera and associated pyroclastic flow deposits in central Hokkaido, Japan: correlation of large-scale pyroclastic flow deposits with source calderas. J Geol Soc Japan, 114: 348-365 (in Japanese with English abs).

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

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

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,

Nakano S, Yamamoto T, Iwaya T, Itoh J, Takada A, 2001-. Quaternary Volcanoes of Japan. Geol Surv Japan, AIST,

Volcanological Society of Japan, 1960-96. Bull Volc Eruptions, no 1-33. [Annual reports issued 1 to 3 years after event year, published since 1986 in Bull Volc].

The Nipesotsu-Maruyama volcano group, located west of Nukabira lake about 20 km east of Tokachidake volcano, is composed of a number of overlapping andesitic-to-rhyolitic stratovolcanoes and lava domes constructed along a NW-SE trend. These volcanoes overlap the SW rim and SW caldera floor of the Pleistocene Tokachimitsumata caldera. The highest peak in the complex is 2013-m-high Nipesotsuyama stratovolcano, which was active during the mid-Pleistocene, about 0.4-0.2 million years ago. The Maruyama stratovolcano and lava dome at the southern end of the complex was discovered to be a Quaternary volcano only in 1989. It is also referred to as Higashi-Tokachi-Maruyama to distinguish it from several other volcanoes named Maruyama, which means "Round Mountain." A minor phreatic eruption took place at Maruyama lava dome in 1898, and fumaroles are present on one of its summit craters.