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Fisher

Photo of this volcano
  • United States
  • Aleutian Ridge Volcanic Arc
  • Composite | Stratovolcano
  • 1830 CE
  • Country
  • Volcanic Province
  • Landform | Volc Type
  • Last Known Eruption
  • 54.65°N
  • 164.43°W

  • 1112 m
    3648 ft

  • 311350
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports available for Fisher.

The Global Volcanism Program has no Weekly Reports available for Fisher.

The Global Volcanism Program has no Bulletin Reports available for Fisher.

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.

Eruptive History

There is data available for 6 confirmed Holocene eruptive periods.

1830 Aug Confirmed Eruption Max VEI: 2 (?)

Episode 1 | Eruption Episode Mount Finch
1830 Aug - Unknown Evidence from Observations: Reported

List of 2 Events for Episode 1 at Mount Finch

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion
1830 Aug    - - - - VEI (Explosivity Index)

1826 Oct 11 - 1827 Jan (?) Confirmed Eruption Max VEI: 3

Episode 1 | Eruption Episode Mount Finch
1826 Oct 11 - 1827 Jan (?) Evidence from Observations: Reported

List of 4 Events for Episode 1 at Mount Finch

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion violent, strong, or large
   - - - -    - - - - Ash
   - - - -    - - - - Earthquakes (undefined)
1826 Oct 11    - - - - VEI (Explosivity Index)

1795 (in or before) Confirmed Eruption  

Episode 1 | Eruption Episode
1795 (in or before) - Unknown Evidence from Observations: Reported

List of 1 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion Uncertain

0400 ± 50 years Confirmed Eruption  

Episode 1 | Eruption Episode Turquoise cone
0400 ± 50 years - Unknown Evidence from Isotopic: 14C (uncalibrated)

List of 5 Events for Episode 1 at Turquoise cone

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion
   - - - -    - - - - Phreatic activity
   - - - -    - - - - Pyroclastic flow
   - - - -    - - - - Scoria
   - - - -    - - - - Tsunami

3170 BCE ± 75 years Confirmed Eruption Max VEI: 5

Episode 1 | Eruption Episode Turquoise cone
3170 BCE ± 75 years - Unknown Evidence from Isotopic: 14C (uncalibrated)

List of 4 Events for Episode 1 at Turquoise cone

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion
   - - - -    - - - - Avalanche
   - - - -    - - - - Pumice
3170 BCE ± 75 years    - - - - VEI (Explosivity Index)

7420 BCE ± 200 years Confirmed Eruption Max VEI: 6 (?)

Episode 1 | Eruption Episode NE and SW parts of Fisher caldera
7420 BCE ± 200 years - Unknown Evidence from Isotopic: 14C (uncalibrated)

List of 8 Events for Episode 1 at NE and SW parts of Fisher caldera

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion extremely violent or catastrophic
   - - - -    - - - - Pyroclastic flow
   - - - -    - - - - Ash
   - - - -    - - - - Blocks
   - - - -    - - - - Scoria
   - - - -    - - - - Pumice
   - - - -    - - - - Caldera Explosion
7420 BCE ± 200 years    - - - - VEI (Explosivity Index)
Deformation History

There is data available for 1 deformation periods. Expand each entry for additional details.


Deformation during 1992 - 2010 [Subsidence; Observed by InSAR]

Start Date: 1992 Stop Date: 2010 Direction: Subsidence Method: InSAR
Magnitude: Unknown Spatial Extent: Unknown Latitude: Unknown Longitude: Unknown

Remarks: Fisher Caldera has been subsiding persistently.

Figure (see Caption)

Velocity maps from (a) PSI and (b) SBAS processing, respectively.

From: Gong et al. 2015.


Reference List: Lu and Dzurisin 2014; Mann and Freymueller 2003; Gong et al. 2015.

Full References:

Gong, W., Meyer, F. J., Lee, C. W., Lu, Z., & Freymueller, J., 2015. Measurement and interpretation of subtle deformation signals at Unimak Island from 2003 to 2010 using weather model- assisted time series InSAR. J. Geophys. Res., 120(2), 1175-1194.

Lu Z, Dzurisin D, 2014. InSAR imaging of Aleutian volcanoes: monitoring a volcanic arc from space. Springer-Verlag Berlin Heidelberg. https://doi.org/10.1007/978-3-642-00348-6

Mann D, Freymueller J, 2003. Volcanic and tectonic deformation on Unimak Island in the Aleutian Arc, Alaska. J. Geophys. Res., 108(B2), 2108. https://doi.org/10.1029/2002JB001925

Emission History

There is no Emissions History data available for Fisher.

GVP Map Holdings

Maps are not currently available due to technical issues.

The maps shown below have been scanned from the GVP map archives and include the volcano on this page. Clicking on the small images will load the full 300 dpi map. Very small-scale maps (such as world maps) are not included.

Smithsonian Sample Collections Database

The following 11 samples associated with this volcano can be found in the Smithsonian's NMNH Department of Mineral Sciences collections, and may be availble for research (contact the Rock and Ore Collections Manager). Catalog number links will open a window with more information.

Catalog Number Sample Description Lava Source Collection Date
NMNH 117233-174 Pumice -- --
NMNH 117233-175 Pumice -- --
NMNH 117233-176 Pumice -- --
NMNH 117233-177 Volcanic Bomb -- --
NMNH 117233-178 Tuff -- --
NMNH 117233-179 Pumice -- --
NMNH 117233-181 Pumice -- --
NMNH 117233-182 Glass -- --
NMNH 117233-185 Pumice -- --
NMNH 117233-186 Obsidian -- --
NMNH 117233-187 Obsidian -- --
External Sites