Koryaksky

Kamchatka

SUMMARY:

Type: composite
Activity: active
Last Eruption: 1957 AD
Rock Type: ?
Eruptive Volume: ? cu km
Location Map from Xerox PARC
Latitude: 53.32 N
Longitude: 158.72 E

GEOLOGIC HISTORY

This large symmetrical stratovolcano (3,456-m elevation) adjacent to Avachinsky is the most prominent landmark seen from the city of Petropavlovsk-Kanchatsky (20 km S). The youngest lava flows are found on the upper W flank and below SE-flank cinder cones.

Historic Activity: Historical activity at Koryaksky has been largely fumarolic, although a weak explosive eruption took place in 1956-57 from the summit crater and a radial fissure on the upper NW flank.

Recent Activity:

  • Fumarolic activity.
  • A period of significantly increased seismic activity began in early March 1994 and continued through April and then decreased to background levels in May.

Data Sources

  • Global Volcanism Network (V. 19, No. 3 to V. 22, No. 11).

ADDITIONAL INFORMATION

Last Update: 2/21/00