Akita-Yake-Yama

SUMMARY:

Type: composite
Activity: active
Last Eruption: 1997 AD
Rock Type: andesite
Eruptive Volume: ? cu km
Location Map from Xerox PARC
Latitude: 39.97 N
Longitude: 140.77 E

GEOLOGIC HISTORY

Akita-Yakeyama is a small andesitic stratovolcano, 7 km in diameter and 700 m in height, with a summit crater 600 m in diameter. Strong summit fumarolic activity has caused heavy sulfurous alteration of rocks there.

Historic Activity: The most recent eruptions, small phreatic events, occurred in 1948, 1949, 1951, and 1957. Heavy snows cover the volcano in winter.

Recent Activity: On May 11, 1997, rapid movement of an older landslide was followed by a steam explosion that triggered mud flows and a small tephra emission.

Data Sources

• Global Volcanism Network (V. 22, No. 5 and V. 22, No. 10).

ADDITIONAL INFORMATION

• Link to Global Volcanism Network's Akita-Yake-Yama Information

Last Update: 2/27/00