Manzaz Volcanic Field

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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 23.92°N
  • 5.83°E

  • 1672 m
    5484 ft

  • 225006
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

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

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

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

The Manzaz volcanic field, north of the Atakor volcanic field in the Hoggar (Ahaggar) volcanic district of Algeria, consists of a large number of scoria cones and associated lava flows. The volcanic field covers an area of 1500 sq km, overlying Precambrian metamorphic and plutonic rocks of the Tuareg shield. Many cones are breached, and the dominantly basaltic and basanitic volcanic products are rich in peridotite and pyroxenite xenoliths and megacrysts. The youngest volcanoes rest on Neolithic terraces and are of Holocene age.

The Global Volcanism Program is not aware of any Holocene eruptions from Manzaz Volcanic Field. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Manzaz Volcanic Field 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.


Craters

Feature Name Feature Type Elevation Latitude Longitude
Oukcem Maar
This NASA Landsat image shows small scoria cones and lava flows of the Manzaz volcanic field in the Hoggar (Ahaggar) volcanic district of Algeria. The volcanic field covers an area of 1500 sq km, overlying Precambrian metamorphic and plutonic rocks of the Tuareg shield. Many cones are breached, and the dominantly basaltic and basanitic volcanic products are rich in peridotite and pyroxenite xenoliths and megacrysts. The youngest volcanoes rest on Neolithic terraces and are of Holocene age.

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

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.

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.

Volcano Types

Pyroclastic cone(s)
Maar(s)

Tectonic Setting

Intraplate
Continental crust (> 25 km)

Rock Types

Major
Trachybasalt / Tephrite Basanite
Basalt / Picro-Basalt

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
1,196
1,196
1,326
5,278

Affiliated Databases

Large Eruptions of Manzaz 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).
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.