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Corbetti

Photo of this volcano
  • Ethiopia
  • Main Ethiopian Rift Zone
  • Caldera | Caldera
  • 396 BCE
  • Country
  • Volcanic Province
  • Landform | Volc Type
  • Last Known Eruption
  • 7.193°N
  • 38.39°E

  • 2289 m
    7510 ft

  • 221290
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

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

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

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

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 2 confirmed Holocene eruptive periods.

[ 1957 Jul 2 ± 182 days - 1964 Jul 2 ± 182 days ] Discredited Eruption

BVE included reports of copious fumarolic activity during 1957-1964 associated with very fresh obsidian flows. However, Wood (1978) noted that there was only Fumarolic activity, and the obsidian flows were much older.

0396 BCE ± 38 years Confirmed Eruption Max VEI: 5

Episode 1 | Eruption Episode Wendo Koshe Younger Pumice
0396 BCE ± 38 years - Unknown Evidence from Isotopic: 14C (calibrated)
 The Wendo Koshe Younger Pumice is described by Rapprich et al. (2016) as follows: "The Plinian eruption of the Wendo Koshe crater within the Corbetti Caldera occurred around 396 BC. The pumice lapilli deposit, with a thickness exceeding 10 cm, dispersed over an area of over 1000 km2 around the towns of Hawasa and Shashemene. Most of the pumice was deposited by fall-out; however, minor local pyroclastic density currents also occurred. The calculated volume of preserved pumice fall deposit (approximately 1.2 km3), combined with the estimated volume of dispersed fine ash distributed further from the volcano, corresponds to an estimated volume of 0.4 km3 (dense rock equivalent) of erupted magma. The age of the pumice eruption (396 ± 38 BC) was determined by 14C radiometric dating of a paleosoil that developed on previous pyroclastic deposits buried by the pumice."

List of 3 Events for Episode 1 at Wendo Koshe Younger Pumice

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion
   - - - -    - - - - Pumice
   - - - -    - - - - VEI (Explosivity Index) VEI 5

5425 BCE (in or before) ± 54 years Confirmed Eruption  

Episode 1 | Eruption Episode Biftu Tuff Cone
5425 BCE (in or before) ± 54 years - Unknown Evidence from Isotopic: 14C (calibrated)
 Research by Colby et al. (2022) "...constrained the age of the Biftu Tuff Cone eruption to <7375 ± 54 cal BP through 14C dating of shells incorporated into an associated PDC deposit. Carbon and oxygen isotope data from these shells also indicate the eruption likely occurred during a high-stand period at Lake Hawassa, raising the possibility of the lake water interacting with the eruption, resulting in the generation of the large-scale dilute PDCs observed."

List of 3 Events for Episode 1 at Biftu Tuff Cone

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion
   - - - -    - - - - Pyroclastic flow
   - - - -    - - - - Cinder Cone
Deformation History

There is data available for 3 deformation periods. Expand each entry for additional details.


Deformation during 2009 - 2009 [Uplift; Observed by InSAR]

Start Date: 2009 Stop Date: 2009 Direction: Uplift Method: InSAR
Magnitude: 4.000 cm Spatial Extent: Unknown Latitude: Unknown Longitude: Unknown
Figure (see Caption)

Corbetti inflation. Each fringe represents 2.8 cm of deformation.

From: Biggs et al. 2011.


Reference List: Biggs et al. 2011.

Full References:

Biggs J, Bastow I D, Keir D, Lewi E, 2011. Pulses of deformation reveal frequently recurring shallow magmatic activity beneath the Main Ethiopian Rift. Geochemistry Geophysics Geosystems, 12, Q0AB10. https://doi.org/10.1029/2011GC003662

Deformation during 1997 - 2000 [Subsidence; Observed by InSAR]

Start Date: 1997 Stop Date: 2000 Direction: Subsidence Method: InSAR
Magnitude: 14.000 cm Spatial Extent: Unknown Latitude: Unknown Longitude: Unknown
Figure (see Caption)

Corbetti deflation (Desc), 23 September 1997 to 13 September 2000; Corbetti deflation (Asc), 28 September 1997 to 17 September 2000. Each fringe represents 2.8 cm of deformation.

From: Biggs et al. 2011.


Reference List: Biggs et al. 2011.

Full References:

Biggs J, Bastow I D, Keir D, Lewi E, 2011. Pulses of deformation reveal frequently recurring shallow magmatic activity beneath the Main Ethiopian Rift. Geochemistry Geophysics Geosystems, 12, Q0AB10. https://doi.org/10.1029/2011GC003662

Deformation during 1994 - 1996 [Uplift; Observed by InSAR]

Start Date: 1994 Stop Date: 1996 Direction: Uplift Method: InSAR
Magnitude: Unknown Spatial Extent: Unknown Latitude: Unknown Longitude: Unknown

Reference List: Biggs et al. 2011.

Full References:

Biggs J, Bastow I D, Keir D, Lewi E, 2011. Pulses of deformation reveal frequently recurring shallow magmatic activity beneath the Main Ethiopian Rift. Geochemistry Geophysics Geosystems, 12, Q0AB10. https://doi.org/10.1029/2011GC003662

Emission History

There is no Emissions History data available for Corbetti.

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

There are no samples for Corbetti in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

External Sites