Afdera

Photo of this volcano
Google Earth icon
  Google Earth Placemark
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 13.088°N
  • 40.853°E

  • 1250 m
    4100 ft

  • 221110
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Afdera.

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

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

Afderà is an isolated rhyolitic stratovolcano located between the Erta Ale, Tat Ali, and Alayta ranges. It lies at the intersection of three fault systems. Young rhyolitic lava domes are aligned N-S at its southern foot. Only a few late-stage satellitic cones are of basaltic composition. Eruptions were reported in 1907 and 1915 (Catalog of Active Volcanoes of the World). However, on morphological grounds it appears to be substantially older than adjacent volcanoes, and the reported eruptions were probably from Alayta volcano to the west. The age of the most recent eruption is not known, although the S-flank rhyolitic lava domes are too young to be dated by the Potassium-Argon method.

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


Synonyms

Afrera

Cones

Feature Name Feature Type Elevation Latitude Longitude
Afderà Stratovolcano
The massive Alayta shield volcano (center) covers an area of 2700 sq km in the western Danakil depression SW of Lake Afrera (upper right). The volcanic consists of two parts--an elongated shield volcano on the west (medium-toned) and an extensive lava field forming the dark-colored area on the eastern flank of the shield volcano. The Alayta lava field, covered by very fresh lava flows (the most recent of which was erupted in 1907), was erupted from N-S-trending fissures and laps up against the western flank of Afderà volcano (immediately SW of Lake Afrera).

Photo by National Aeronautical and Space Administration (NASA), 1984.
Sharp-peaked Afderà volcano rises to the SW beyond Lake Afrera (Lake Giulietti). This isolated rhyolitic stratovolcano is located at the intersection of three fault systems between the Erta Ale, Tat Ali, and Alayta ranges. Eruptions reported in 1907 and 1915 from Afderà were probably from the morphologically younger Alayta volcano. The low lakeshore tuff ring in the foreground is surrounded by lava flows erupted from vents SE of Hayli Gubbi volcano.

Photo by Jürg Alean, 2002 (Kantonsschule Zürcher Unterland, Bülach, Switzerland).

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.

CNR-CNRS Afar Team, 1973. Geology of northern Afar (Ethiopia). Rev Geog Phys Geol Dynam, 15: 443-490.

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.

Wiart P, Oppenheimer C, 2005. Large magnitude silicic volcanism in north Afar: the Nabro volcanic range and Ma'alalta volcano. Bull Volc, 67: 99-115.

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

Volcano Types

Stratovolcano

Tectonic Setting

Rift zone
Intermediate crust (15-25 km)

Rock Types

Major
Rhyolite
Minor
Basalt / Picro-Basalt
Trachybasalt / Tephrite Basanite
Andesite / Basaltic Andesite

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
51
6,042
8,611
161,009

Affiliated Databases

Large Eruptions of Afdera 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.