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Kenya · Vulcano a scudo

Barrier

Barrier, The

Tipo
Vulcano a scudo
Altitudine
1032 m
Ultima eruzione
1921
A northward-looking aerial view shows the summit caldera of Kakorinya volcano of The Barrier volcanic complex with Lake Turkana in the distance. The 3.8-km-wide summit caldera was formed about 92,000 years ago, and post-caldera lava domes and flows fill much of the caldera floor. Fresh-looking lava flows and tuff cones occur along the shores of Lake Turkana. Teleki's Cone on the northern flank and Andrew's Cone (lower left foreground) on the southern flank have been the source of historical lava flows.
A northward-looking aerial view shows the summit caldera of Kakorinya volcano of The Barrier volcanic complex with Lake Turkana in the distance. The 3.8-km-wide summit caldera was formed about 92,000 years ago, and post-caldera lava domes and flows fill much of the caldera floor. Fresh-looking lava flows and tuff cones occur along the shores of Lake Turkana. Teleki's Cone on the northern flank and Andrew's Cone (lower left foreground) on the southern flank have been the source of historical lava flows. · Foto: Photo by Martin Smith, 1993 (copyright British Geological Survey, NERC).
Tipo
Vulcano a scudo
Paese
Kenya
Regione
Africa orientale / Kenyan Rift Volcanic Province
Altitudine
1032 m
Coordinate
2.320, 36.570
Ultima eruzione
1921
Contesto tettonico
Zona di rift / Crosta continentale (> 25 km)
Forma vulcanica
A scudo
Roccia principale
Trachite / Trachidacite
Sintesi geologica

The Barrier volcanic complex separates Lake Turkana from the broad Suguta Trough to the S, the site of a former lake. The volcano is comprised of four overlapping shield volcanoes, with the youngest, Kakorinya, located over the axis of the East African Rift. Kalolenyang volcano lies W of Kakorinya, and Likaiu West and Likaiu East are located to the ENE. A 3.8-km-wide summit caldera was formed at Kakorinya about 92,000 years ago. Youthful-looking trachytic and phonolitic lava domes and flows erupted within the caldera and along its ring fracture fill much of the caldera floor. Early Holocene fissure-related scoria cones and lava flows dot the S and N flanks. Solfataric fields are located within the caldera and on the W and S flanks. Historical eruptions from Teleki's and Andrew's cones on the N and S flanks, respectively, have produced basaltic explosive activity and lava flows during the 19th and 20th centuries.

Storia delle eruzioni

12 registrateGlossario
Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni · Usa le frecce per spostarti tra le barre, Invio per aprire
7710 a.C.~7389 a.C. · 1 eruzioni · VEI max. ?958~1279 · 3 eruzioni · VEI max. 01600~1921 · 8 eruzioni · VEI max. 27710 a.C.5463 a.C.2894 a.C.647 a.C.1600

Cronologia dettagliata

  1. 1921VEI 2Osservata
    1921-12-31 – fine sconosciuta
    North flank (Teleki)
  2. 1920 (±3 anni)VEI ?Metodo non indicato
    1920-07-02 – fine sconosciuta
    South flank (Andrew's Volcano)
  3. 1917VEI 2Osservata
    1917-07-02 – fine sconosciuta
    Andrew's or Teleki's Volcanoes
  4. 1906VEI ?Metodo non indicato
    1906-07-02 – fine sconosciuta
    Andrew's or Teleki's Cones
  5. 1897VEI 2Osservata
    1897-05-16 – fine sconosciuta
    North flank (Teleki) and Likaiu
  6. 1895VEI 2Osservata
    1895-07-02 – fine sconosciuta
    North flank (Teleki's Cone)
  7. 1888VEI 0Osservata
    1888-07-02 – fine sconosciuta
    North flank (Teleki's Cone)
  8. 1871 (±3 anni)VEI 2Osservata
    1871-07-02 – fine sconosciuta
    North flank (Teleki's Cone)
  9. 1090 (±50 anni)VEI 0Stima geologica
    1090 – fine sconosciuta
    North flank
  10. 1050 (±150 anni)VEI 0Stima geologica
    1050 – fine sconosciuta
    North flank
  11. 1030 (±150 anni)VEI 0Stima geologica
    1030 – fine sconosciuta
    North flank
  12. 7710 a.C. (±200 anni)VEI ?Stima geologica
    7710 a.C. – fine sconosciuta
    North (Abili Agituk) and south flanks

Vulcani nelle vicinanze

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