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San Martín Tuxtla

San Martin

Campo vulcanico · Mexico · 1660 m

Volcán San Martín Tuxtla is a large edifice in the NE part of the basaltic Los Tuxtlas Volcanic Field on the coast of the Gulf of México. The summit and flanks contain more than 250 cones and maars. Two large eruptions took place in 1664 and 1793. The 1793 eruption occurred from two scoria cones in the 1-km-wide summit crater and produced widespread ashfall and lava flows that extended 3.5 km down the NE flank.
Volcán San Martín Tuxtla is a large edifice in the NE part of the basaltic Los Tuxtlas Volcanic Field on the coast of the Gulf of México. The summit and flanks contain more than 250 cones and maars. Two large eruptions took place in 1664 and 1793. The 1793 eruption occurred from two scoria cones in the 1-km-wide summit crater and produced widespread ashfall and lava flows that extended 3.5 km down the NE flank. · Foto: Photo by Steve Nelson, 1986 (Tulane University). · Wikimedia Commons
Tipo
Campo vulcanico
Paese
Mexico
Regione
Middle America-Caribbean Volcanic Regions / Trans-Mexican Volcanic Arc
Altitudine
1660 m
Coordinate
18.561, -95.199
Ultima eruzione
1796
Contesto tettonico
Subduction zone / Continental crust (> 25 km)
Forma vulcanica
Composite
Roccia principale
Trachybasalt / Tephrite Basanite
Sintesi geologica

Volcán de San Martín, part of the Tuxtla Volcanic Field, is a broad alkaline shield volcano that rises above the Gulf of Mexico. The massive volcano, also known as San Martín Tuxtla, is elongated NW-SE and is capped by a 1-km-wide summit crater. The upper part of the volcano is covered with dense tropical rain forests. The summit and flanks contain more than 250 pyroclastic cones and maars. Well-preserved cinder cones are abundant between the summit and Laguna Catemaco on the SE flank. Holocene cones in this area produced ash deposits that buried stone pyramids. The two largest recorded eruptions took place in 1664 and 1793. The 1793 eruption occurred from two cinder cones in the summit crater and produced widespread ashfall and lava flows that extended 3.5 km down the NE flank.

Sintesi da Wikipedia

Riassunto in inglese

The isolated San Martin Tuxtla volcano is a shield volcano which rises above the Gulf of Mexico. It has had eruptions in historical times. It occurs in the Tuxtla volcanic field in Veracruz, Mexico. Lavas from San Martin vary between basanite and alkali basalt. Locally the volcano is also known as Tiltépetl.

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Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
3440 BCE~3241 BCE · 1 eruzioni · VEI max. ?2246 BCE~2047 BCE · 1 eruzioni · VEI max. ?1450 BCE~1251 BCE · 1 eruzioni · VEI max. ?853 BCE~655 BCE · 1 eruzioni · VEI max. ?257 BCE~58 BCE · 1 eruzioni · VEI max. ?58 BCE~141 · 1 eruzioni · VEI max. ?340~539 · 2 eruzioni · VEI max. ?738~937 · 1 eruzioni · VEI max. ?1335~1534 · 1 eruzioni · VEI max. ?1534~1733 · 1 eruzioni · VEI max. 31733~1932 · 5 eruzioni · VEI max. 43440 BCE2047 BCE853 BCE5391733

Cronologia dettagliata

  1. 1932VEI ?Stima geologica
    1932-12-31 – In corso
  2. 1838VEI ?Stima geologica
    1838 – In corso
  3. 1797VEI 2Stima geologica
    1797 – 1805
  4. 1794VEI 2Osservata
    1794-05 – 1796
  5. 1793VEI 4Osservata
    1793-03-02 – 1793-12
    Cinder cones in summit crater
  6. 1664VEI 3Osservata
    1664-01-15 – In corso
    SE flank
  7. 1534VEI ?Stima geologica
    1534 – In corso
  8. 890 (±40 anni)VEI ?Stima geologica
    890 – In corso
  9. 480 (±50 anni)VEI ?Stima geologica
    480 – In corso
  10. 380 (±75 anni)VEI ?Stima geologica
    380 – In corso
    South flank
  11. 120 (±200 anni)VEI ?Stima geologica
    120 – In corso
    South flank (Cerro Puntiagudo)
  12. 150 a.C. (±300 anni)VEI ?Stima geologica
    BCE 150 – In corso
    South flank
  13. 750 a.C. (±40 anni)VEI ?Stima geologica
    BCE 750 – In corso
  14. 1320 a.C. (±300 anni)VEI ?Stima geologica
    BCE 1320 – In corso
    South flank (Cerro Mono Blanco)
  15. 2130 a.C. (±50 anni)VEI ?Stima geologica
    BCE 2130 – In corso
  16. 3440 a.C. (±50 anni)VEI ?Stima geologica
    BCE 3440 – In corso

Link esterni

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