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Farallon de Pajaros

Stratovulcano · United States · 337 m

The 2-km-wide island of Farallon de Pajaros is the northernmost and most active volcano of the Mariana Islands. It has been referred to as the "Lighthouse of the western Pacific." The symmetrical, sparsely vegetated cone formed within a caldera, remnants of which form the peak seen here in 1980 in the center along the SE coast. Both summit and flank vents have been active during historical time; flank fissures formed lava flows along the coast.
The 2-km-wide island of Farallon de Pajaros is the northernmost and most active volcano of the Mariana Islands. It has been referred to as the "Lighthouse of the western Pacific." The symmetrical, sparsely vegetated cone formed within a caldera, remnants of which form the peak seen here in 1980 in the center along the SE coast. Both summit and flank vents have been active during historical time; flank fissures formed lava flows along the coast. · Foto: Photo by Winfrey, 1980 (U.S. Navy). · Wikimedia Commons
Tipo
Stratovulcano
Paese
United States
Regione
Northwestern Pacific Volcanic Regions / Mariana Volcanic Arc
Altitudine
337 m
Coordinate
20.546, 144.893
Ultima eruzione
1953
Contesto tettonico
Subduction zone / Crustal thickness unknown
Forma vulcanica
Composite
Roccia principale
Andesite / Basaltic Andesite
Sintesi geologica

The small 2-km-wide island of Farallon de Pajaros (also known as Uracas) is the northernmost and most active volcano of the Mariana Islands. Its relatively frequent eruptions dating back to the mid-19th century have caused the andesitic volcano to be referred to as the "Lighthouse of the western Pacific." The symmetrical, sparsely vegetated summit is the central cone within a small caldera cutting an older edifice, remnants of which are seen on the SE and southern sides near the coast. Flank fissures have fed lava flows that form platforms along the coast. Eruptions have been recorded from both summit and flank vents.

Sintesi da Wikipedia

Farallon de Pajaros o Urracas è un'isola vulcanica dell'oceano Pacifico. È la più settentrionale delle Isole Marianne.

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
1864~1873 · 2 eruzioni · VEI max. 21873~1882 · 1 eruzioni · VEI max. 21899~1908 · 1 eruzioni · VEI max. 21908~1917 · 1 eruzioni · VEI max. 21917~1926 · 1 eruzioni · VEI max. 21926~1934 · 3 eruzioni · VEI max. 21934~1943 · 4 eruzioni · VEI max. 21943~1952 · 3 eruzioni · VEI max. 218641882190819261943

Cronologia dettagliata

  1. 1952VEI 2Osservata
    1952-10-26 – 1953-04-15
    Summit, east side
  2. 1951VEI 2Osservata
    1951-08-16 – In corso
  3. 1947VEI 0Osservata
    1947-01 – In corso
    North side
  4. 1943VEI 2Osservata
    1943 – In corso
    Summit, south side
  5. 1941VEI 1Osservata
    1941-03-28 – In corso
  6. 1939VEI 1Osservata
    1939 – In corso
    East side ?
  7. 1936VEI 1Osservata
    1936-04-15 – In corso
  8. 1934VEI ?Osservata
    1934 – In corso
  9. 1932VEI 2Osservata
    1932-09-07 – 1932-10-07
    Summit, east side ?
  10. 1928VEI 2Osservata
    1928-12-15 – In corso
  11. 1925VEI 2Osservata
    1925 – In corso
  12. 1912VEI 2Osservata
    1912 – In corso
    North side ?
  13. 1901VEI 2Stima geologica
    1901-01 – 1902-12
    Summit, east side
  14. 1876VEI 2Osservata
    1876-01-01 – 1876-01-03
    Summit, NE side
  15. 1872VEI 2Osservata
    1872-07-11 – In corso
  16. 1864VEI 2Osservata
    1864-01-07 – In corso
    SW side

Link esterni

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