Get our newsletter!
Check out the volcano tours offered by Volcano-Adventures!
Volcanoes & Earthquakes - new app for Android
Guaranteed tours:
13-21 May: From Stromboli to Etna - Eolian Islands + Etna volcano (Italy)
20-27(28) May: Fascination Volcano - Santorini Island (Greece)
29 May - 3 Jun: Aegean's Hidden Gem: Isle of Milos - Milos Island (Greece)
3-18 Jun: From Krakatau to Bali - Java (Indonesia)
4-11 Jun: Nyiragongo Lava Lake & Mountain Gorillas - DR Congo + Rwanda
10-18 Jun: From Stromboli to Etna - Eolian Islands + Etna volcano (Italy)
8-23 Jul: From Krakatau to Bali - Java (Indonesia)
10-14 Jul: Adventure Volcano - Yasur Volcano Travel - Tanna Island (Vanuatu)
10-24 Jul: Volcanoes in the South Sea - Vanuatu (South Sea)
14-23 Jul: The Volcanoes of Ambrym - the Grand Traverse - Vanuatu (South Sea)
: spaces available / : guaranteed / : few spaces left / : booked out
 
Random pictures
News

no news in this list.

 

Aniakchak volcano

Caldera 1341 m / 4,400 ft
United States, Alaska Peninsula, 56.88°N / -158.17°W
Current status: dormant (1 out of 5)
Aniakchak volcano books
Typical eruption style: unspecified
Aniakchak volcano eruptions: 1931 
TimeMag. / DepthDistanceLocation
Mon, 17 Apr
Mon, 17 Apr 22:58 UTCM 2.0 / 11.4 km13 km- 41km NNE of Chignik Lake, Alaska
Sat, 15 Apr
Sat, 15 Apr 02:26 UTCM 1.8 / 6.5 km18 km- 111km NE of Chignik Lake, Alaska
Thu, 13 Apr
Thu, 13 Apr 16:49 UTCM 1.8 / 2.2 km20 km- 117km NE of Chignik Lake, Alaska
Thu, 13 Apr 06:02 UTCM 2.9 / 4 km35 km- 113km NNE of Chignik Lake, Alaska
Tue, 28 Mar
Tue, 28 Mar 10:46 UTCM 2.3 / 90.6 km16 km- 67km NE of Chignik Lake, Alaska
View all recent quakes

Background:

One of the most dramatic calderas of the Aleutian arc, the 10-km-wide Aniakchak caldera was formed around 3400 years ago during a voluminous eruption in which pyroclastic flows traveled more than 50 km north to the Bering Sea and also reached the Pacific Ocean to the south. At least 40 explosive eruptions have been documented from Aniakchak during the past 10,000 years, making it the most active volcano of the eastern Aleutian arc. A dominantly andesitic pre-caldera volcano was constructed above basement Mesozoic and Tertiary sedimentary rocks that are exposed in the caldera walls to elevations of about 610 m. The ice-free caldera floor contains many pyroclastic cones, tuff cones, maars, and lava domes. Surprise Lake on the NE side drains through The Gates, a steep-walled breach on the east side of the 1-km-high caldera rim. Vent Mountain and Half Cone are two long-lived vents on the south-central and NW caldera floor, respectively. The first and only confirmed historical eruption took place in 1931 from vents on the west and SW caldera floor.
---
Smithsonian / GVP volcano information


Latest satellite images

More on VolcanoDiscovery:

Copyrights: VolcanoDiscovery and other sources as noted.
Use of material: Text and images on this webpage are copyrighted. Further reproduction and use without authorization is not consented. If you need licensing rights for photographs, for example for publications and commercial use, please contact us.