Tarso Tousside

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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 21.03°N
  • 16.45°E

  • 3265 m
    10709 ft

  • 225010
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Tarso Tousside.

The Global Volcanism Program has no Weekly Reports available for Tarso Tousside.

The Global Volcanism Program has no Bulletin Reports available for Tarso Tousside.

Basic Data

Volcano Number

Last Known Eruption



Unknown - Evidence Credible

3265 m / 10709 ft


Volcano Types

Pyroclastic cone(s)

Rock Types

Trachyte / Trachyandesite
Trachyandesite / Basaltic trachy-andesite
Basalt / Picro-Basalt

Tectonic Setting

Continental crust (> 25 km)


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

Geological Summary

Tarso Toussidé, a broad volcanic massif at the western end of the Tibesti Range, is capped by the Toussidé stratovolcano, constructed at the western end of the 14-km-wide ignimbritic Yirrigue caldera of Pleistocene age. The 6000 sq km Toussidé massif was constructed over a basement of Precambrian schists on the east and Paleozoic sandstones on the west. The summit contains numerous fumaroles and very youthful lava flows that would be of historical age in an inhabited region (Vincent 1992, pers. comm.). Fresh-looking trachytic and trachyandesitic lava flows from Toussidé cover an area of 200 sq km and extend as far as 25 km from the summit on the western side. The steep-sided, 1-km-deep, 8-km-wide Trou au Natron caldera cuts the SE rim of Yirrigue caldera and is one of the youngeset features of the massif. Ehi Timi and Ehi Sosso volcanoes and the smaller 1.5-km-wide explosion crater of Doon Kidimi are located on the NE-to-ESE flanks of the massif.


The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography.

Geze B, Hudeley H, Vincent P, Wacrenier P, 1959. Les volcacans du Tibesti (Sahara du Tchard). Bull Volc, 22: 135-172.

Green J, Short N M, 1971. Volcanic Landforms and Surface Features: a Photographic Atlas and Glossary. New York: Springer-Verlag, 519 p.

Permenter J L, Oppenheimer C, 2007. Volcanoes of the Tibesti massif (Chad, northern Africa). Bull Volc, 69: 609-626.

Richard J J, Neumann van Padang M, 1957. Africa and the Red Sea. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI 4: 1-118.

Vincent P M, 1963. Les volcans Tertiares et Quaternaires de Tibesti occidental et central (Sahara du Tchad). Mem Bur Recherche Geol Min, 23: 1-307.

Vincent P M, 1992. (pers. comm.).

The Global Volcanism Program is not aware of any Holocene eruptions from Tarso Tousside. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Tarso Tousside page in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).

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.


Tidichi, Ehi


Feature Name Feature Type Elevation Latitude Longitude
Grand Botoum Cone 20° 51' 0" N 16° 32' 0" E
Grand Dadoi Cone 20° 52' 0" N 16° 41' 0" E
Petit Botoum Cone 20° 50' 0" N 16° 33' 0" E
Petit Dadoi Cone 20° 53' 0" N 16° 35' 0" E
Sosso, Ehi Stratovolcano 2515 m 21° 0' 0" N 16° 43' 0" E
Tamertiou, Tarso Cone 20° 56' 0" N 16° 47' 0" E
Tatodomji Cone
Timi, Ehi Stratovolcano 3040 m 21° 7' 0" N 16° 36' 0" E


Feature Name Feature Type Elevation Latitude Longitude
Doon Kidimi
    Petit Trou au Natron
    Doon Kinimi
Trou Au Natron
    Doon Orei
Pleistocene caldera 2900 m 20° 59' 0" N 16° 33' 0" E
Yirrigue Pleistocene caldera 21° 1' 0" N 16° 30' 0" E

Photo Gallery

Dark lava flows radiate from Toussidé volcano (center), the second highest peak of the Tibesti Range in Chad. This Space Shuttle image of the Tarso Toussidé volcanic massif has north to the bottom. Toussidé stratovolcano was constructed at the western end of the large Pleistocene ignimbritic caldera of Yirrigue, whose scarp is seen left of Toussidé. The smaller 8-km-wide caldera of Trou au Natron cuts the SE rim of Yirrigue caldera. Ehi Timi (lower center) and Ehi Sosso (left center) volcanoes are located on the flanks of the massif.

NASA Space Shuttle image S-511-42, 1985 (http://eol.jsc.nasa.gov/).
A dramatic Space Shuttle image shows dark lava flows radiating from Toussidé volcano and spreading across the desert floor. Light-colored fumarolically altered areas can be seen at the volcano's 3265-m-high summit, the second highest peak of the Tibesti Range in Chad. Toussidé stratovolcano was constructed at the western end of the large Pleistocene ignimbritic caldera of Yirrigue, whose eastern scarp is seen right of Toussidé. The smaller 1000-m-deep, 8-km-wide Trou au Natron caldera (lower right) cuts the SE rim of Yirrigue caldera.

NASA Space Shuttle image STS111-367-29, 2002 (http://eol.jsc.nasa.gov/).

Smithsonian Sample Collections Database

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

Affiliated Sites

Large Eruptions of Tarso Tousside 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).
MODVOLC - HIGP MODIS Thermal Alert System Using infrared satellite Moderate Resolution Imaging Spectroradiometer (MODIS) data, scientists at the Hawai'i Institute of Geophysics and Planetology, University of Hawai'i, developed an automated system called MODVOLC to map thermal hot-spots in near real time. For each MODIS image, the algorithm automatically scans each 1 km pixel within it to check for high-temperature hot-spots. When one is found the date, time, location, and intensity are recorded. MODIS looks at every square km of the Earth every 48 hours, once during the day and once during the night, and the presence of two MODIS sensors in space allows at least four hot-spot observations every two days. Each day updated global maps are compiled to display the locations of all hot spots detected in the previous 24 hours. There is a drop-down list with volcano names which allow users to 'zoom-in' and examine the distribution of hot-spots at a variety of spatial scales.
MIROVA Middle InfraRed Observation of Volcanic Activity (MIROVA) is a near real time volcanic hot-spot detection system based on the analysis of MODIS (Moderate Resolution Imaging Spectroradiometer) data. In particular, MIROVA uses the Middle InfraRed Radiation (MIR), measured over target volcanoes, in order to detect, locate and measure the heat radiation sourced from volcanic activity.