Mount Yoko (Northern Yatsugatake)

Mount Yoko
横岳
Elevation	2,480 m (8,136 ft)
Prominence	400 m (1,312 ft)
Parent peak	Mount Tateshina
Listing	List of mountains and hills of Japan by height
Location
Location	Honshū, Japan
Range	Northern Yatsugatake Volcanic Group
Coordinates	36°5′15″N 138°19′12″E / 36.0875°N 138.32°E / 36.0875; 138.32Coordinates: 36°5′15″N 138°19′12″E / 36.0875°N 138.32°E / 36.0875; 138.32
Topo map	Geographical Survey Institute 25000:1 蓼科山, 25000:1 蓼科, 50000:1 蓼科山
Geology
Type	Volcanic
Age of rock	Quaternary
Volcanic arc/belt	Northeastern Japan Arc
Last eruption	1200 ±100 years

Mount Yoko (横岳, Yoko-dake^?) also Mount Kita Yoko, is an active lava dome located in the Northern Yatsugatake Volcanic Group of the Yatsugatake Mountains, Honshū, Japan. Mount Yoko has shown the most recent activity and is now considered an active volcano. It last erupted about 800 years ago.^[1] The eruption consisted of ash with a lava flow of some 3 million cubic meters. The eruption was dated by corrected radiocarbon dating. The next previous eruption was in or after 400 BCE.^[2]

References

1. ^ "KITA YATSU-GA-TAKE (TATESHINA-YAMA, YOKO-DAKE etc.)". Quaternary Volcanoes of Japan. Geological Survey of Japan, AIST. 2006. http://riodb02.ibase.aist.go.jp/strata/VOL_JP/EN/vol/65.htm. Retrieved 2008-08-23. 
2. ^ "Kita Yatsuga-take". Global Volcanism Program. Smithsonian National Museum of Natural History. pp. Eruptive History. http://www.volcano.si.edu/world/volcano.cfm?vnum=0803-031&volpage=erupt. Retrieved 2008-09-10. 

• Geographical Survey Institute