Editer la page Suivre ce blog Administration + Créer mon blog

Earth of fire

Actualité volcanique, Articles de fond sur étude de volcan, tectonique, récits et photos de voyage

Of all the areas with geysers in the world, the most famous are the Yellowstone , Iceland, New Zealand , Kamchatka or Chile.

                   Location of geysers in the world - Doc. johnston archives 2010

The Wondermondo site recently gathered informations on other lesser-known located in the East-African great rift and having active or extinct geysers : Ethiopia, Kenya , Uganda.

African rift Geysers
                        Location geysers on the East African Rift - doc. Wondermondo / Google                                   

Geysers  - true geysers
Perpetual spouters  - perpetual spouters
Cold water geysers  - cold water geysers
Extinct geysers  - extinct geysers

In Ethiopia, going from south to north, there are two off geysers fields   around Lake Abaya and north of Lake Langano . More to the N- NE, in the Afar triangle, two active geyser fields are known : the Allalobed geysers and Dallol geysers and salt sources.

North of Lake Abaya , the hot springs Chokore (or Chakoware ) had until 1979, active geysers , the last of them amounted to more than 1,8 meter.
Today, still a number of very hot springs , the temperature reached 96°C , and a  geyserite platform housing cones of ancient geysers.
 Le lac Abaya vu de Arba Minch, Éthiopie - Bernard Gagnon
                         The Abaya lake seen from Arba Minch - Photo Bernard Gagnon

North of Lake Langano , a deep bay hosts an island, with different names : Edo Laki , O'A , or just " island of geysers ."
A large geyser, now defunct , was born in 1906, after an earthquake and remained active for several decades, rising to 25-30 m. twice per minute. Become less active over time, it rose more than 1 meter every half hour in 1926. In 1965, the site of the geyser is transformed into a two-meter diameter basin, the level varies of 5 to 10 cm. every 10 minutes. In 1970 , only remains a hot spring, with alkaline water (pH 8.36 ) at 96°C.

The Allalobed geysers, " the waters of Allah " are a set of steam vents , small craters of hot mud exhaling gas, deep warm waters basins of various colors, dark green, blue or yellow, pulsatile and can boil intensely.

Alolobed - CHB 2                     
Ethiopia - Allalobed - photo © Carole & Frederic Hardy 2009

Alolobed - CHB 5
                      Ethiopia - Allalobed - photo © Carole & Frederic Hardy 2009


Alolobed - CHB 3

                           Ethiopia - Allalobed - photo © Carole & Frederic Hardy 2009

Alalobeda hot spring - Dancalia
                Ethiopia - Allalobed - Hot spring gushing - Photo Dancalia

A basin called Allalobeda spouter often rises to 6 meters, occasionally up to 30 meters high. Its waters have a surface temperature of 97°C. Another source
has a geyser amount to 30 cm. .

These hot springs form agglomerated deposits housing fossilized remains of plants and insects. The cooler is used by the Afars , who do their laundry .

To follow: the geysers of Ethiopia - the site of Dallol .



Sources :

- Wondermondo - geysers of Africa - link

- GOSA - Geyser Observation and Study Association - link

- Johnston's archives - geysers ressources - link


Articles récents

Hébergé par Overblog