Alu

Photo of this volcano
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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 13.825°N
  • 40.508°E

  • 429 m
    1407 ft

  • 221060
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Alu.

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

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

The summit region of Alu volcano, lying immediately NW of conical Dalaffilla volcano, is an ellipsoidal volcanic horst, elongated in a NNW-SSE direction, and formed primarily of older basaltic lava flows. Very recent fractures along the axis of the Erta Ale range cut the main volcanic horst of Alu and areas to the SSE. Major fumarolic activity is located on the numerous parallel faults, some of which have uplifts of 100 m. Fissure vents west of the horst have fed silicic lava flows, and voluminous youthful basaltic lava flows to the east extend north as far as Lake Bakili.

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

The summit region of Alu volcano is located left of the center of this Landsat image, south of Lake Bakili (top center). Alu lies SE of Gada Ale volcano (upper left), which rises above the western shore of the lake, and NW of Dalaffilla volcano (bottom center). Alu is an ellipsoidal volcanic horst, elongated in a NNW-SSE direction. Fissure vents west of the horst have fed silicic lava flows, and other fissures to the south have produced voluminous youthful basaltic lava flows that extend north as far as Lake Bakili.

NASA Landsat image, 1999 (courtesy of Hawaii Synergy Project, Univ. of Hawaii Institute of Geophysics & Planetology).
The summit region of Alu volcano, lying immediately NW of conical Dalaffilla volcano, is an ellipsoidal volcanic horst, elongated in a NNW-SSE direction, and formed primarily of older basaltic lava flows. Very recent fractures along the axis of the chain cut the main volcanic horst. Major fumarolic activity is located on the numerous parallel faults, some of which have uplifts of 100 m. Fissure vents west of the horst have fed silicic lava flows, and other fissures to the south have produced voluminous youthful basaltic lava flows that extend north as far as Lake Bakili.

Photo by Richard Roscoe, 2002.

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.

Barberi F, Varet J, 1970. The Erta Ale volcanic range (Danakill depression, Northern Afar, Ethiopia). Bull Volc, 34: 848-917.

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..

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.

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

Volcano Types

Fissure vent(s)

Tectonic Setting

Rift zone
Intermediate crust (15-25 km)

Rock Types

Major
Basalt / Picro-Basalt
Andesite / Basaltic Andesite
Trachyte / Trachyandesite
Rhyolite

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
0
9
11,209
478,054

Affiliated Databases

Large Eruptions of Alu 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.