# Mount E
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> Source: https://en.wikipedia.org/wiki/Mount_E
> Source revision: 1355482245
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{{Short description|Active stratovolcano on the island of Hokkaido, Japan}}
{{distinguish|Sony E-mount{{!}}E-Mount}}
{{Infobox mountain
| name = Mount E
| other_name = 恵山
| image = Esan.jpg
| image_caption =
| elevation_m = 617.6
| elevation_ref = [[http://watchizu.gsi.go.jp/watchizu.html?latitude=41.804722&longitude=141.166111 Geospatial Information Authority] topographic map 恵山]
| prominence_m =
| prominence_ref =
| listing = [List of mountains and hills of Japan by height](/source/List_of_mountains_and_hills_of_Japan_by_height)
[List of volcanoes in Japan](/source/List_of_volcanoes_in_Japan)
| language = Japanese
| location = [Hokkaido](/source/Hokkaido), [Japan](/source/Japan)
| range = [Kameda Peninsula](/source/Kameda_Peninsula)
| map = Japan Hokkaido#Japan
| range_coordinates =
| map_caption = Location of Mount E in Japan.
| label_position = right
| coordinates = {{coord|41|48|17|N|141|09|58|E|type:mountain_region:JP-01_scale:100000|format=dms|display=inline,title}}
| coordinates_ref =
50000:1 尻屋崎
| type = Stratovolcano
| age = Pleistocene
| volcanic_arc = [Northeastern Japan Arc](/source/Northeastern_Japan_Arc)
| last_eruption = June 1874
| first_ascent =
| easiest_route =
}}
[[File:Esan Volcano & Esan-Maruyama Volcano, SRTM-1.jpg|thumb|Esan Volcano(lower right), [Esan-Maruyama Volcano](/source/Mount_Maru_(Esan))(left)]]
{{nihongo|'''Mount E'''|恵山|E-san}} is an active [stratovolcano](/source/stratovolcano) of the Kameda peninsula, which is itself part of the larger [Oshima Peninsula](/source/Oshima_Peninsula). It is in the rural, eastern region of [Hakodate](/source/Hakodate%2C_Hokkaid%C5%8D), [Hokkaido](/source/Hokkaido), [Japan](/source/Japan). Mount E is part of [Esan Prefectural Natural Park](/source/Esan_Prefectural_Natural_Park).[{{cite web|url=http://www.pref.hokkaido.lg.jp/ks/skn/environ/parks/esan.htm|script-title=ja:恵山道立自然公園|publisher=HOKKAIDO Government|language=Japanese|accessdate=23 April 2010}}]
==Geology==
Mount E consists of [non-alkali](/source/alkali), [mafic](/source/mafic), [volcanic rock](/source/volcanic_rock).[{{cite web|url=http://riodb02.ibase.aist.go.jp/db084/kihon/hokkaido_e.xml|title=Hokkaido|date=Feb 18, 2010|work=Seamless digital geological map of Japan 1: 200,000.|publisher=The Geological Survey of Japan, AIST|accessdate=25 April 2010|archive-date=6 January 2013|archive-url=https://web.archive.org/web/20130106003942/http://riodb02.ibase.aist.go.jp/db084/kihon/hokkaido_e.xml|url-status=dead}}] The [andesitic](/source/andesitic) volcano is topped with a [lava dome](/source/lava_dome).[{{cite gvp|vn=285011|title=Esan|accessdate=2010-04-22}}]
The oldest recorded eruption started November 18, 1846. The eruption triggered [lahar](/source/lahar)s damaging several houses and causing fatalities.[{{cite web|url=http://riodb02.ibase.aist.go.jp/strata/VOL_JP/EN/vol/185.htm|archive-url=https://archive.today/20121219043612/http://riodb02.ibase.aist.go.jp/strata/VOL_JP/EN/vol/185.htm|url-status=dead|archive-date=December 19, 2012|title=E-SAN|year=2006|work=Quaternary Volcanoes in Japan|publisher=Geological Survey of Japan, AIST|accessdate=25 April 2010}}]
[Radiocarbon dating](/source/Radiocarbon_dating) and [tephrochronology](/source/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.