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Dama Ali is a broad shield volcano that rises above the NW shore of Lake Abbe (also known as Lake Abhe) in eastern Ethiopia. The 25-km-wide volcano was constructed at the southern end of the Kalo Plain. Nested circular craters are located at the summit of the dominantly basaltic volcano, which also displays an older caldera rim. An arcuate chain of rhyolitic lava domes occupies the northern, western, and southern flanks. Youthful basaltic lava flows surround these domes and blanket the flanks of the volcano, and recent flows cover the young sediments of the Kalo and Abhe basins. The Asmara basaltic pyroclastic cone located in the southern Kalo basin SW of the base of the volcano was considered to have had activity during the last 2000 years (International Association of Volcanology and Chemistry of the Earth's Interior, 1973). It is considered the most likely source of an eruption reported to have occurred in 1631 (Gouin, 1979). Major fumarolic activity occurs in the summit crater, and abundant hot springs are found on the volcano.
Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|1631 Feb 14 (?)||Unknown||Confirmed||Unknown||Volcano Uncertain|
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.
|Dama Hali | Dema Ali | Dama Ale | Doma Ale | Damahale|
|Feature Name||Feature Type||Elevation||Latitude||Longitude|
|Asmara||Pyroclastic cone||500 m||11° 16' 0" N||41° 31' 0" E|
|Dama Ali is a broad shield volcano that rises above the NW shore of Lake Abhe (right) at the southern end of the Kalo Plain and was the most likely source of an eruption reported to have occurred in 1631 AD. Nested circular craters are located at the summit of the dominantly basaltic volcano, and an arcuate chain of rhyolitic lava domes can be seen on the northern, western, and southern flanks. Major fumarolic activity occurs in the summit crater, and abundant hot springs are found on the volcano.
NASA Landsat image, 1999 (courtesy of Hawaii Synergy Project, Univ. of Hawaii Institute of Geophysics & Planetology).
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.
Gouin P, 1979. Earthquake history of Ethiopia and the Horn of Africa. Internatl Devel Res Centre (Canada), 118E: 259.
IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..
United Nations, 1973. Geology, geochemistry and hydrology of hot springs of the East African Rift system within Ethiopia. United Nations Tech Rpt, New York, DP/SF/UN 116: 1-220.
Varet J, 1978. Geology of central and southern Afar (Ethiopia and Djibouti Republic). CNRS, Paris, 124 p.