uu.seUppsala universitets publikationer
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Volcanic and structural evolution of Pico do Fogo, Cape Verde
University of Las Palmas de Gran Canaria, Dept. of Physics, Las Palmas de Gran Canaria, Spain. (GEOVOL)
University of Las Palmas de Gran Canaria, Dept. of Physics, Las Palmas de Gran Canaria, Spain. (GEOVOL)
University of Las Palmas de Gran Canaria, Dept. of Physics, Las Palmas de Gran Canaria, Spain. (GEOVOL)
Université Blaise Pascal Clermont-Ferrand II, France.
Visa övriga samt affilieringar
2015 (Engelska)Ingår i: Geology Today, ISSN 0266-6979, E-ISSN 1365-2451, Vol. 31, nr 4, s. 146-152Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

In recent months the media have drawn attention to the Cape Verde archipelago, with particular focus on the island of Fogo, the only island presently active and with an eruption that began on 23 November 2014, finally ceasing on 7 February 2015. The Monte Amarelo conical shield forms most of the 476 km2 almost circular island of Fogo. After attaining a critical elevation of about 3500 m, the Monte Amarelo shield volcano was decapitated by a giant landslide that formed a caldera-like depression (Cha das Caldeiras), which was subsequently partially filled by basaltic nested volcanism. This younger eruptive activity culminated in the construction of the 2829 m-high Pico do Fogo stratocone, apparently entirely made of layers of basaltic lapilli. Continued growth of the Pico do Fogo summit eruptions was interrupted in 1750, most likely after the stratocone reached a critical height. Since then, at least eight eruptions have taken place inside the landslide depression at the periphery of the Pico do Fogo cone, including the 2014–2015 eruptive event. Strong geological similarities with the Canary Islands, 1400 km to the north, have been frequently noted, probably as a consequence of a common process of origin and evolution associated with a mantle hot-spot. These similarities are particularly evident when comparing Fogo with the Teide Volcanic Complex on Tenerife, where a lateral collapse of the Las Cañadas stratovolcano also formed a large depression (the Caldera de Las Cañadas), now partially filled with the 3718 m-high Teide stratocone. However, important geological differences also exist and probably relate to the contrasting evolutionary stages of both islands. The Las Cañadas volcano on Tenerife formed at a late post-erosional stage, with predominantly evolved (trachyte and phonolite) magmas, while at Fogo basaltic volcanism is still dominant.

Ort, förlag, år, upplaga, sidor
2015. Vol. 31, nr 4, s. 146-152
Nationell ämneskategori
Geologi Multidisciplinär geovetenskap
Forskningsämne
Geovetenskap med inriktning mot mineralogi, petrologi och tektonik
Identifikatorer
URN: urn:nbn:se:uu:diva-270972DOI: DOI: 10.1111/gto.12101OAI: oai:DiVA.org:uu-270972DiVA, id: diva2:890915
Tillgänglig från: 2016-01-05 Skapad: 2016-01-05 Senast uppdaterad: 2017-12-01

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltext

Personposter BETA

Troll, ValentinBarker, Abigail

Sök vidare i DiVA

Av författaren/redaktören
Troll, ValentinBarker, Abigail
Av organisationen
Mineralogi, petrologi och tektonik
I samma tidskrift
Geology Today
GeologiMultidisciplinär geovetenskap

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 597 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf