Ekuador · Gunung api perisai
Marchena Island
Marchena
- Tipe
- Gunung api perisai
- Ketinggian
- 343 m
- Letusan terakhir
- 1991
- Tipe
- Gunung api perisai
- Negara
- Ekuador
- Wilayah
- Pasifik Timur / Northern Galapagos Volcanic Province
- Ketinggian
- 343 m
- Koordinat
- 0.330, -90.470
- Letusan terakhir
- 1991
- Kondisi tektonik
- Zona rift / Kerak samudra (< 15 km)
- Bentuk lahan
- Perisai
- Batuan utama
- Basal / Pikrobasal
Ringkasan geologi
The low shield volcano forming Marchena Island contains one of the largest calderas of the Galápagos Islands. The 6 x 7 km caldera and its outer flanks have been largely buried by a cluster of pyroclastic cones and associated lava flows. Its first historical eruption occurred in 1991. Other young lava flows, some of which may be only a few thousand, or even a few hundred years old, filled the caldera and flowed down its outer forested flanks, in some cases to the sea.
Ringkasan Wikipedia
Ringkasan InggrisMarchena Island is one of the Galapagos Islands in Ecuador. It has an area of 130 square kilometers (50 sq mi) and reaches an elevation of 343 meters (1,125 ft) above sea level. The island does not receive visitors, although the surrounding water is used by aquatic divers on organized tours. People generally see the island as they sail around the northern part of Isabela on the way to Genovesa Island.
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Riwayat letusan
1 tercatatGlosariumGaris waktu rinci
- 1991VEI 2Teramati1991-09-25 – 1991-11-16West to SW caldera rim
Gunung api terdekat
- Pinta IslandGunung api perisai · sejauh 43 km
- Genovesa IslandGunung api perisai · sejauh 57 km
- Pulau Santiago (Galápagos)Gunung api perisai · sejauh 70 km
- Gunung Berapi WolfGunung api perisai · sejauh 104 km
- Volcán DarwinGunung api perisai · sejauh 106 km
- Pulau Santa Cruz (Galápagos)Gunung api perisai · sejauh 107 km
Tautan eksternal
⚠ Untuk referensi saja. Bukan untuk tanggap darurat.