Aluto

Aluto
Highest point
Elevation 2,365 m (7,759 ft)
Prominence 765 m (2,510 ft)
Listing List of volcanoes in Ethiopia
Coordinates 7°47′13″N 38°46′16″E / 7.787°N 38.771°E / 7.787; 38.771Coordinates: 7°47′13″N 38°46′16″E / 7.787°N 38.771°E / 7.787; 38.771 
Geography
Location Ethiopia
Geology
Mountain type Stratovolcano
Last eruption ~ 50 BC

Aluto (also known as Alutu) (2,365 metres (7,759 ft)) is a dormant stratovolcano in Ethiopia, located in the Ethiopian Rift Valley in southern Oromia region between Lake Langano and Lake Ziway. It is the site of the Aluto–Langano Geothermal Power Station.

Geology

It features numerous vents along E-W and NNW-SSE trending fissures which converge at the coordinates of the volcano center, which is the center of a hypothesized caldera surrounded by rims, visible especially in the south and west. The largest vent is 1 km × 0.5 km in size just SE of the volcano center and along the SE rim of the volcano. The volcano covers a surface area of appr. 25 km2. The silicic volcano center has an eruption history of more than 150,000 years, the last eruption was around 2,000 years ago.

Strong fumarolic activity continues throughout today. The volcano is permanently inflating and deflating with the strongest movements at the center of the hypothesized caldera, indicating some activity around 5 km below the volcano.[1]

Close to the center of the hypothetical caldera is the site of the high-temperature Aluto–Langano geothermal field with temperatures between 300-400 °C at depths below 1,200 meters. This geothermal field covers an area of about 8 km2.[2]

The field is also the site of the Aluto–Langano Geothermal Power Station, a pilot power plant to explore geothermal energy in Ethiopia.

See also

References

  1. ↑ "How to turn a volcano into a power station – with a little help from satellites". The Conversation. 1 November 2017. Retrieved 5 September 2018.
  2. ↑ Selamawit Worku Sisay (November 2016). "Sub-surface Geology and Hydrothermal Alteration of Wells LA-9D and LA-10D of Aluto langano geothermal Field, Ethiopia" (PDF). Addis Ababa: Geological Survey of Ethiopia. Retrieved 4 September 2018.
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