Tahalra Volcanic Field

Photo of this volcano
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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 22.67°N
  • 5°E

  • 1467 m
    4812 ft

  • 225004
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Tahalra Volcanic Field.

The Global Volcanism Program has no Weekly Reports available for Tahalra Volcanic Field.

The Global Volcanism Program has no Bulletin Reports available for Tahalra Volcanic Field.

Basic Data

Volcano Number

Last Known Eruption



Unknown - Evidence Credible

1467 m / 4812 ft


Volcano Types

Pyroclastic cone(s)
Lava dome(s)

Rock Types

Trachybasalt / Tephrite Basanite
Trachyandesite / Basaltic trachy-andesite
Trachyte / Trachyandesite

Tectonic Setting

Continental crust (> 25 km)


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

Geological Summary

The elongated, E-W-trending Tahalra volcanic field covers an area of about 1800 sq km in the Hoggar Province of southern Algeria. The large volcanic field lies WSW of the town of Tamanrasset and was active from the Miocene to the Holocene, producing alkaline strombolian cones and lava flows. The high point of the volcanic field, which was constructed over a basement of Precambrian metamorphic and plutonic rocks of the Tuareg shield, lies near its eastern end. A dozen trachytic-to-rhyolitic lava domes and spines formed during the Pliocene, and Pliocene-to Pleistocene activity formed about 100 small strombolian basaltic (mostly basanitic) cones. The most recent activity during the Pleistocene and Holocene produced about 20 maars and cones along the northern margin of the volcanic field.


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

Dautria J M, Dostal J, Dupuy C, Liotard J M, 1988. Geochemistry and petrogenesis of alkali basalts from Tahalra (Hoggar, northwest Africa). Chem Geol, 69: 17-35.

Liegeois J-P, Benhallou A, Azzouni-Sekkal A, Yahiaoui R, Bonin B, 2005. The Hoggar swell and volcanism: reactivation of the Precambrian Tuareg shield during Alpine convergence and West African Cenozoic volcanism. In: Foulger G R, Natland H H, Presnall D C, Anderson D L (eds) Plates, Plumes, and Paradigms, {Geol Soc Amer Spec Pap}, 388: 379-400.

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

The Global Volcanism Program has no synonyms or subfeatures listed for Tahalra Volcanic Field.

Photo Gallery

The dark-green and bluish-gray areas extending across this NASA Landsat image depict the elongated, E-W-trending Tahalra volcanic field, which covers an area of about 1800 sq km in the Hoggar Province of southern Algeria. About 100 small strombolian basaltic cones formed during the Pliocene and Pleistocene, and the most recent activity during the late-Pleistocene and Holocene produced about 20 maars and cones along the northern margin of the volcanic field.

NASA Landsat7 image (worldwind.arc.nasa.gov).

Smithsonian Sample Collections Database

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

Affiliated Sites

Large Eruptions of Tahalra Volcanic Field 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.