Major Volcanoes of the World
Major Volcanoes of the World : Avachinsky
| Colima | Galeras
| Mauna Loa | Mount
Etna | Mount Nyiragongo
| Mount Rainier | Mount
Unzen | Mount Vesuvius
| Sakurajima | Santamaría
| Santorini | Taal
| Teide |
Ulawun
Teide
Teide or Pico del Teide (traditional English: the Peak of Tenerife) is a volcano and mountain on Tenerife, Canary Islands. At 3,715 m (12,188 ft) above sea level and approximately 7,000 m (23,000 ft) above the adjacent sea bed, it is the highest mountain in Spain and the highest mountain in any Atlantic island. The island of Tenerife itself is the third largest volcano by volume on Earth. Due to its eruptive history and location close to population centres, the volcano has been designated a Decade Volcano worthy of close study to prevent future natural disasters.
Geology
Teide is currently dormant, having last erupted in 1909 from the subsidiary vent of Chinyero on the west slope. Other significant eruptions occurred in 1704–1706 and 1798. The summit has a number of small active fumaroles emitting hot sulfur dioxide and other gases. Further eruptions are considered likely in the future, including a risk of highly dangerous pyroclastic flows similar to those on Mount Pelée and Mount Vesuvius.
About 150,000 years ago, a much larger explosive eruption occurred, probably of Volcanic Explosivity Index 7, creating Las Cañadas, a large caldera at just over 2,000 m altitude, 15 km across east-west and 10 km north-south. On the south side, the internal crater walls rise as almost sheer cliffs from 2,100 m to 2,715 m at Guajara. The 3,717 m summit of Teide itself, and its subsidiary vent Pico Viejo (3,134 m), both in the northern half of the caldera, derive from eruptions subsequent to this prehistoric explosion.
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