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Portugal · Stratovolcano

Terceira Island

Terceira

Type
Stratovolcano
Elevation
1023m
Last eruption
2000
Terceira Island
Photo: Image Science and Analysis Laboratory, NASA-Johnson Space Center. · Public domain · Wikimedia Commons
Type
Stratovolcano
Country
Portugal
Region
Atlantic Ocean / Azores-Terceira Rift Volcanic Province
Elevation
1023m
Coordinates
38.730, -27.320
Last eruption
2000
Tectonic setting
Rift zone / Oceanic crust (< 15 km)
Landform
Composite
Major rock type
Basalt / Picro-basalt

Geological summary

Terceira Island contains multiple stratovolcanoes constructed along a prominent ESE-WNW fissure zone that cuts across the island.

Excerpt from the Global Volcanism Program, Smithsonian Institution · Read the full summary on GVP →

From Wikipedia

Terceira is a volcanic island in the Azores archipelago of Portugal, 1,181 km (734 mi) due west of Lisbon. It is one of the larger islands of the archipelago, with a population of 53,311 inhabitants in an area of approximately 396.75 km2 (153.19 sq mi).

Wikipedia · CC BY-SA · Read full article →

Eruption history

15 recordedGlossary

Record summary

Confirmed eruptions
15
Uncertain eruptions
0
Span of confirmed record
6720 BCE (±50 yrs) – 2000
Largest confirmed eruption
VEI 3 (1867)
Confirmed eruptions since 1900
1
Summary (VEI over time)
Click a bar to see individual eruptions · Use arrow keys to move between bars, Enter to open
6720 BCE~6429 BCE · 1 eruptions · max VEI ?2652 BCE~2361 BCE · 1 eruptions · max VEI ?1199 BCE~908 BCE · 1 eruptions · max VEI ?908 BCE~617 BCE · 1 eruptions · max VEI ?327 BCE~36 BCE · 2 eruptions · max VEI ?36 BCE~254 · 2 eruptions · max VEI ?545~836 · 1 eruptions · max VEI ?836~1126 · 1 eruptions · max VEI ?1126~1417 · 2 eruptions · max VEI ?1707~1998 · 3 eruptions · max VEI 36720 BCE4686 BCE2361 BCE327 BCE1707

Detailed timeline

  1. 1998VEI 0Observed
    1998-11-25 – 2000-03-16
    Serreta Ridge (submarine vent W of Terceira)
  2. 1867VEI 3Observed
    1867-06-01 – 1867-06-08
    Submarine vent 3-6 WNW of Terceira
  3. 1761VEI 2Observed
    1761-04-17 – 1761-04-28
    Fissure zone (east of Santa Barbara)
  4. 1400 (±50 yrs)VEI ?Geological estimate
    1400 – end unknown
    Farol I dome (Santa Barbara)
  5. 1200 (±300 yrs)VEI ?Geological estimate
    1200 – end unknown
    Guilherme Moniz (Pico Alto)
  6. 920 (±50 yrs)VEI ?Geological estimate
    920 – end unknown
    Guilherme Moniz (Quinta da Madalena)
  7. 820 (±40 yrs)VEI ?Geological estimate
    820 – end unknown
    Santa Barbara
  8. 190 (±40 yrs)VEI ?Geological estimate
    190 – end unknown
    Guilherme Moniz (Pico Alto)
  9. 70 (±40 yrs)VEI ?Geological estimate
    70 – end unknown
    Fissure zone (east of Santa Barbara)
  10. 60 BCEVEI ?Geological estimate
    60 BCE – end unknown
    Fissure zone (south of Pico Alto)
  11. 90 BCE (±100 yrs)VEI ?Geological estimate
    90 BCE – end unknown
    Fissure zone (east of Santa Barbara)
  12. 670 BCE (±300 yrs)VEI ?Geological estimate
    670 BCE – end unknown
    Guilherme Moniz
  13. 940 BCE (±50 yrs)VEI ?Geological estimate
    940 BCE – end unknown
    Santa Barbara NW flank (Lagoinha dome)
  14. 2530 BCE (±40 yrs)VEI ?Geological estimate
    2530 BCE – end unknown
    Fissure zone (east of Santa Barbara)
  15. 6720 BCE (±50 yrs)VEI ?Geological estimate
    6720 BCE – end unknown
    Guilherme Moniz (Pico das Pardelas)

Nearby volcanoes

External links

⚠ For reference only. Not for emergency response.