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Ayelu is a vegetated rhyolitic stratovolcano, located south of the Asbahri plain in the southern Afar region. On its eastern side, 2145-m-high Ayelu is cut by regional faults and is overlain by ignimbrites erupted from Adwa volcano immediately to the east. It was constructed by a series of thick rhyolitic lava flows, creating a higher and steeper-sided volcano than Adwa. Hot springs are located on the western flank.
Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|[ 1928 ]||[ Unknown ]||Uncertain||2|
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.
|Agelu | Aielu | Ajelou | Assalo | Ajel | Ay-alu | Ayalu|
|Ayelu is the westernmost and older of two volcanoes at the southern end of the Danakil depression. The vegetated rhyolitic stratovolcano is cut by prominent regional faults. Hot springs occur at its western flank. Its younger twin volcano, Aabida, has a 4 x 5 km caldera, which originated following eruption of voluminous pyroclastic flows, and a younger 2.5-km-wide caldera. Extensive young basaltic lava flows cover the flanks of Aabida and overlap a sedimentary plain to the SE.
Photo by Giday Wolde-Gabriel (Los Alamos National Laboratory).
|A 4 x 5 km wide caldera cuts the summit of Adwa volcano above the center of this NASA Landsat image with north to the top. This prominent volcano (also known as Aabida, Amoissa, or Dabita) is a stratovolcano in the southern Afar area immediately east of Ayelu volcano, which lies above and to the left of the westernmost flank lava flow. These prominent young basaltic lava flows were erupted from vents on the west, east, and south flanks of Adwa volcano and overlap a sedimentary plain to the SE.
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.
CNR-CNRS, 1975. Geological Maps of Afar: 1, Northern Afar (1971); 2, Central and Southern Afar (1975). La Celle St Cloud, France: Geotechnip.
Mohr P A, 1980. . (pers. comm.).
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.
Varet J, 1978. Geology of central and southern Afar (Ethiopia and Djibouti Republic). CNRS, Paris, 124 p.
WoldeGabriel G, 1987. . (pers. comm.).
Wood C A, 1978. . (pers. comm.).