Mount Maru
丸山
Mount Maru is located in Japan
Mount Maru
Mount Maru
Mount Maru is located in Hokkaido
Mount Maru
Mount Maru
Mount Maru (Hokkaido)
Highest point
Elevation1,692.1 m (5,552 ft)[1]
Prominence421 m (1,381 ft)[1]
Parent peakMount Nipesotsu
ListingList of mountains and hills of Japan by height
List of volcanoes by elevation
Coordinates43°25′3″N 143°1′51″E / 43.41750°N 143.03083°E / 43.41750; 143.03083
Naming
English translationround mountain
Language of nameJapanese
Geography
LocationHokkaido, Japan
Parent rangeNipesotsu-Maruyama Volcanic Group
Topo mapGeospatial Information Authority 25000:1 ニペソツ山
25000:1 ウペペサンケ山
50000:1 糠平
Geology
Age of rockQuaternary
Mountain typelava dome
Volcanic arc/beltKurile arc
Last eruption1898

Mount Maru (丸山, Maru-yama) is a lava dome located in the Nipesotsu-Maruyama Volcanic Group of the Ishikari Mountains, Hokkaidō, Japan. Mount Maru is also known as Higashi-Tokachi-Maruyama (東十勝丸山)[2] or Higashi-Taisetsu-Maruyama (東大雪丸山)[3] to distinguish it from other mountains with the same name. Only in 1989 did scientists discover that Mount Maru is a quaternary volcano.[2] The mountain sits on the border between the towns of Kamishihoro and Shintoku.[1]

Geology

The western flank of the mountain shows accretionary complex from the late Eocene to the early Miocene. The eastern flank shows non-alkaline mafic volcanic rock from the early to middle Miocene. The mountain is topped with non-alkaline mafic rock from the middle Pleistocene.[4]

Eruptive history

Other than fumaroles, the last eruption of Mount Maru, according to historical records, was from approximately December 3, 1898 to December 6. Before that the last eruption was approximately 1700 BC.[2]

See also

References

  1. 1 2 3 Geospatial Information Authority topographic map ウペペサンケ山
  2. 1 2 3 "Maruyama". Global Volcanism Program. Smithsonian Institution. Retrieved 2010-04-30.
  3. ↑ "HIGASHI-TAISETSU MARU-YAMA". Quaternary Volcanoes in Japan. Geological Survey of Japan, AIST. Archived from the original on 19 December 2012. Retrieved 30 April 2010.
  4. ↑ "Hokkaido". Seamless digital geological map of Japan 1: 200,000. Geological Survey of Japan, AIST. Feb 18, 2010. Retrieved 30 April 2010.


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