Mount E (恵山, E-san) is an active stratovolcano of the Kameda peninsula, which is itself part of the larger Oshima Peninsula. It is in the rural, eastern region of Hakodate, Hokkaido, Japan. Mount E is part of Esan Prefectural Natural Park.[2]
Geology
Mount E consists of non-alkali, mafic, volcanic rock.[3] The andesitic volcano is topped with a lava dome.[4][5]
Eruptive history
Mount E last erupted on June 8, 1874. This eruption consisted of phreatic explosions, and was rated a 1 on the VEI scale.[4]
The oldest recorded eruption started November 18, 1846. The eruption triggered lahars damaging several houses and causing fatalities.[4][5]
Radiocarbon dating and tephrochronology indicate five other eruptions predating the historical records in the approximate years 1350, 550 BC, 1050 BC, 3900 BC ±100 years, 7050 BC. The eruption in 7050 BC was the largest with a VEI of 3.[4]
References
- ^ a b Geospatial Information Authority topographic map 恵山
- ^ 恵山道立自然公園 (in Japanese). HOKKAIDO Government. Retrieved 23 April 2010.
- ^ "Hokkaido". Seamless digital geological map of Japan 1: 200,000. The Geological Survey of Japan, AIST. Feb 18, 2010. Archived from the original on 6 January 2013. Retrieved 25 April 2010.
- ^ a b c d "Esan". Global Volcanism Program. Smithsonian Institution. Retrieved 2010-04-22.
- ^ a b "E-SAN". Quaternary Volcanoes in Japan. Geological Survey of Japan, AIST. 2006. Archived from the original on December 19, 2012. Retrieved 25 April 2010.
External links
- Esan - Japan Meteorological Agency (in Japanese)
- "Esan: National catalogue of the active volcanoes in Japan" (PDF). - Japan Meteorological Agency
- Esan - Geological Survey of Japan
- Esan: Global Volcanism Program - Smithsonian Institution
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