Hakkoda

SUMMARY:

Type: composite
Activity: dormant
Last Eruption: ~100,000 yrs BP
Rock Type: ?
Eruptive Volume: ? cu km
Location Map from Xerox PARC
Latitude: 40.65 N
Longitude: 140.88 E

GEOLOGIC HISTORY

Hakkoda, Å20 km SE of Aomori City, consits of stratocones and lava domes; the highest peak is O-take (1,585 m). After the formation of the Minami (S)-Hakkoda volcanic group (basalt, 3.9-0.5 Ma), the Kakkoda caldera was created due to a large-scale pyroclastic-flow eruption (dacite, 1-0.8 Ma), followed by the formation of the Kita (N)-Hakkoda volcano group (mainly andesite, 1-0.3 Ma).

Historic Activity: There are strong solfataras around O-take, but there is no record of any historical eruptions.

Recent Activity: On July 14, 1997 a group of Japanese troops on a training mission were over come by gases in a depression, three died.

Data Sources

• Global Volcanism Network (V. 22, No. 6).

ADDITIONAL INFORMATION

• Link to Global Volcanism Network's Hakkoda Information
• Link to VolcanoWorld's Eruption Updates for Hakkoda

Last Update: 2/27/00