Corbetti Caldera

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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 7.18°N
  • 38.43°E

  • 2320 m
    7610 ft

  • 221290
  • Latitude
  • Longitude

  • Summit

  • Volcano

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

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

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

Volcano Types

Pyroclastic cone

Tectonic Setting

Rift zone
Continental crust (> 25 km)

Rock Types

Basalt / Picro-Basalt


Within 5 km
Within 10 km
Within 30 km
Within 100 km

Geological Summary

The 15-km-wide Corbetti caldera overlaps the NW margin of the older 30 x 40 km Awasa caldera. Urji volcano was subsequently constructed in the center of Corbetti caldera, which also contains young lava flows. Chabbi volcano, a large obsidian dome that grew on the SE caldera rim, has erupted lava flows onto the caldera floor. The age of the latest eruptive activity at Corbetti caldera is not known, although many lava flows are too young to date by the Potassium-Argon method. Fumarolic activity continues at the post-caldera cones of Urji, Chabbi, and an unnamed pyroclastic cone on the west rim.

Eruptive History

Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
[ 1957 ] [ 1964 ] Discredited    

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.


Tchobbe | Djabi


Feature Name Feature Type Elevation Latitude Longitude
Abaro Cone
Stratovolcano 7° 11' 0" N 38° 26' 0" E
Urji Cone 7° 12' 0" N 38° 22' 0" E


Feature Name Feature Type Elevation Latitude Longitude
Awasa Pleistocene caldera 1675 m 7° 5' 0" N 38° 27' 0" E

Photo Gallery

Chabbi volcano, rising to the north across Awasa lake, is a very large obsidian dome constructed on the SE rim of the 15-km-wide Corbetti caldera, which itself lies within the NW side of the larger Awasa caldera. In this photo Corbetti caldera is out of view behind its southern rim, which forms the low saddle at the left. Lava flows from Chabbi extend into Corbetti caldera. The age of the latest eruption of Corbetti volcano is not known, although fumarolic activity continues.

Photo by Giday Wolde-Gabriel (Los Alamos National Laboratory).


The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title.

Decker R W, 1971. Table of Active Volcanoes of the World. Unpublished 41 page table, compiled primarily from IAVCEI catalogs with revisions by many volcanologists.

Di Paola G M, 1971. Geology of the Corbetti Caldera (main Ethiopian rift valley). Bull Volc, 35: 497-506.

Katsui Y (ed), 1971. List of the World Active Volcanoes. Volc Soc Japan draft ms, (limited circulation), 160 p.

Mohr P A, Mitchell J G, Raynolds R G H, 1980. Quaternary volcanism and faulting at O'a caldera, central Ethiopian Rift. Bull Volc, 43: 173-190.

Newhall C G, Dzurisin D, 1988. Historical unrest at large calderas of the world. U S Geol Surv Bull, 1855: 1108 p, 2 vol.

WoldeGabriel G, 1986. The Awasa caldera in the main Ethiopian Rift (MER). IAVCEI 1986 Cong, New Zeal, Abs, p 351.

WoldeGabriel G, 1987. . (pers. comm.).

Affiliated Databases

Large Eruptions of Corbetti Caldera Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
WOVOdat WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.
EarthChem EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).
Smithsonian Collections Search the Smithsonian's NMNH Department of Mineral Sciences collections database. Go to the "Search Rocks and Ores" tab and use the Volcano Name drop-down to find samples.