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Dabbahu

Stratovulcano · Ethiopia · 1401 m

The slopes of Dabbahu volcano in the background are part of a large volcanic massif consisting of obsidian flows, lava domes, cones, and basaltic lava flows constructed on a shield volcano. This view from the N with people for scale shows Da'Ure, a 500-m-long fissure vent formed during the first historical eruption in September 2005. A small dome was formed during the eruption. The central part of the volcano lies farther to the right off the margin of the photo.
The slopes of Dabbahu volcano in the background are part of a large volcanic massif consisting of obsidian flows, lava domes, cones, and basaltic lava flows constructed on a shield volcano. This view from the N with people for scale shows Da'Ure, a 500-m-long fissure vent formed during the first historical eruption in September 2005. A small dome was formed during the eruption. The central part of the volcano lies farther to the right off the margin of the photo. · Foto: Photo by Anthony Philpotts, 2005 (University of Connecticut). · Wikimedia Commons
Tipo
Stratovulcano
Paese
Ethiopia
Regione
Eastern Africa Volcanic Regions / Afar Rift Volcanic Province
Altitudine
1401 m
Coordinate
12.595, 40.480
Ultima eruzione
2005
Contesto tettonico
Rift zone / Intermediate crust (15-25 km)
Forma vulcanica
Composite
Roccia principale
Basalt / Picro-Basalt
Sintesi geologica

Dabbahu (also known as Boina, Boyna, or Moina) is a Pleistocene-to-Holocene volcanic massif forming an axial range of the Afar depression SSW of the Alayta massif. Late-stage pantelleritic obsidian flows, lava domes, and pumice cones form the summit and upper flanks. The volcano rises above the Teru Plain and was built over a volumetrically dominant base of basaltic-to-trachyandesitic lava flows of a shield volcano. Late-stage basaltic fissure eruptions also occurred at the NW base of the volcano. Abundant fumaroles are located along the crest of the volcano and extend NE towards Alayta. The first historical eruption took place from a fissure vent on the NE flank in September 2005, producing ashfall deposits and a small pumice dome. More than 6000 people were evacuated from neighboring villages.

Sintesi da Wikipedia

Dabbahu è uno stratovulcano attivo facente parte del gruppo dell'Alayta, in Dancalia (Etiopia). Si innalza sopra la pianura del Teru. La sommità è coperta da colate di ossidiana e di pietra pomice.

Wikipedia · CC BY-SA · Leggi l'articolo completo

Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
5850 BCE~5588 BCE · 1 eruzioni · VEI max. ?4541 BCE~4279 BCE · 1 eruzioni · VEI max. ?3493 BCE~3232 BCE · 1 eruzioni · VEI max. ?1743~2005 · 1 eruzioni · VEI max. 35850 BCE4017 BCE1923 BCE90 BCE1743

Cronologia dettagliata

  1. 2005VEI 3Osservata
    2005-09-26 – 2005-09-29
    NE flank (Da'Ure)
  2. 3450 a.C. (±1800 anni)VEI ?Stima geologica
    BCE 3450 – In corso
  3. 4450 a.C. (±2700 anni)VEI ?Stima geologica
    BCE 4450 – In corso
    North flank
  4. 5850 a.C. (±4300 anni)VEI ?Stima geologica
    BCE 5850 – In corso
    North flank

Link esterni

⚠ Solo a scopo informativo. Non adatto a situazioni di emergenza.