Portugal · Stratovolkan
Terceira
- Tipe
- Stratovolkan
- Ketinggian
- 1023 m
- Letusan terakhir
- 2000
- Tipe
- Stratovolkan
- Negara
- Portugal
- Wilayah
- Samudra Atlantik / Azores-Terceira Rift Volcanic Province
- Ketinggian
- 1023 m
- Koordinat
- 38.730, -27.320
- Letusan terakhir
- 2000
- Kondisi tektonik
- Zona rift / Kerak samudra (< 15 km)
- Bentuk lahan
- Komposit
- Batuan utama
- Basal / Pikrobasal
Ringkasan geologi
Terceira Island contains multiple stratovolcanoes constructed along a prominent ESE-WNW fissure zone that cuts across the island. Historically active Santa Barbara volcano at the western end of the island is truncated by two calderas, the youngest of which formed about 15,000 years ago. Comenditic lava domes fill and surround the caldera. Pico Alto lies north of the fissure zone in the north-central part of the island and contains a Pleistocene caldera largely filled by lava domes and lava flows. Guilherme Moniz caldera lies along the fissure zone immediately to the south, and 7-km-wide Cinquio Picos caldera is at the SE end of the island. Historical eruptions have occurred from Pico Alto, the fissure zone between Pico Alto and Santa Barbara, and from submarine vents west of Santa Barbara. Most Holocene eruptions have produced basaltic-to-rhyolitic lava flows from the fissure zone.
Ringkasan Wikipedia
Ringkasan InggrisTerceira 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).
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Riwayat letusan
15 tercatatGlosariumGaris waktu rinci
- 1998VEI 0Teramati1998-11-25 – 2000-03-16Serreta Ridge (submarine vent W of Terceira)
- 1867VEI 3Teramati1867-06-01 – 1867-06-08Submarine vent 3-6 WNW of Terceira
- 1761VEI 2Teramati1761-04-17 – 1761-04-28Fissure zone (east of Santa Barbara)
- 1400 (±50 tahun)VEI ?Perkiraan geologi1400 – akhir tidak diketahuiFarol I dome (Santa Barbara)
- 1200 (±300 tahun)VEI ?Perkiraan geologi1200 – akhir tidak diketahuiGuilherme Moniz (Pico Alto)
- 920 (±50 tahun)VEI ?Perkiraan geologi920 – akhir tidak diketahuiGuilherme Moniz (Quinta da Madalena)
- 820 (±40 tahun)VEI ?Perkiraan geologi820 – akhir tidak diketahuiSanta Barbara
- 190 (±40 tahun)VEI ?Perkiraan geologi190 – akhir tidak diketahuiGuilherme Moniz (Pico Alto)
- 70 (±40 tahun)VEI ?Perkiraan geologi70 – akhir tidak diketahuiFissure zone (east of Santa Barbara)
- 60 SMVEI ?Perkiraan geologi60 SM – akhir tidak diketahuiFissure zone (south of Pico Alto)
- 90 SM (±100 tahun)VEI ?Perkiraan geologi90 SM – akhir tidak diketahuiFissure zone (east of Santa Barbara)
- 670 SM (±300 tahun)VEI ?Perkiraan geologi670 SM – akhir tidak diketahuiGuilherme Moniz
- 940 SM (±50 tahun)VEI ?Perkiraan geologi940 SM – akhir tidak diketahuiSanta Barbara NW flank (Lagoinha dome)
- 2530 SM (±40 tahun)VEI ?Perkiraan geologi2530 SM – akhir tidak diketahuiFissure zone (east of Santa Barbara)
- 6720 SM (±50 tahun)VEI ?Perkiraan geologi6720 SM – akhir tidak diketahuiGuilherme Moniz (Pico das Pardelas)
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