Etiopia · Stratovolkan
Alutu
Aluto
- Tipe
- Stratovolkan
- Ketinggian
- 2335 m
- Letusan terakhir
- 1550
- Tipe
- Stratovolkan
- Negara
- Etiopia
- Wilayah
- Afrika Timur / Main Ethiopian Rift Volcanic Province
- Ketinggian
- 2335 m
- Koordinat
- 7.770, 38.780
- Letusan terakhir
- 1550
- Kondisi tektonik
- Zona rift / Kerak benua (> 25 km)
- Bentuk lahan
- Komposit
- Batuan utama
- Riolit
Ringkasan geologi
Aluto, between lakes Zway and Langano (Mirrga), is a stratovolcano with multiple vents aligned along NNE-SSW and E-W fissures along a narrow graben between the two lakes. This silicic volcanic center lies along the regional Wonji Fault Belt and has produced abundant pumice-flow and pumice-fall deposits, along with lesser rhyolitic lava flows. Obsidian lava flows erupted from craters along the fissures have descended the flanks in all directions. Cinder cones, lava domes, phreatic explosion craters, and thermal springs are structurally controlled. The oldest known eruptions produced the Hulo-Seyno Ignimbrite about 155,000 years ago. The latest eruptions produced obsidian flows and pumice breccias about 2,000 years ago. Eruptive products overlie recent basaltic lava flows to the west. Strong fumarolic activity continues.
Riwayat letusan
5 tercatatGlosariumGaris waktu rinci
- 1550 (±50 tahun)VEI ?Perkiraan geologi1550 – akhir tidak diketahuiTephra sample from E flank of edifice
- 50 SMVEI ?Perkiraan geologi50 SM – akhir tidak diketahui
- 6200 SM (±1680 tahun)VEI ?Perkiraan geologi6200 SM – akhir tidak diketahuiTephra sample from Deka Wede (W of caldera)
- 7280 SM (±2000 tahun)VEI ?Perkiraan geologi7280 SM – akhir tidak diketahuiTephra sample from Haroresa (S of caldera)
- 10900 SM (±1630 tahun)VEI ?Perkiraan geologi10900 SM – akhir tidak diketahuiTephra sample from Deka Wede (W of caldera)
Gunung api terdekat
Tautan eksternal
- Belum ada di Wikipedia (Bahasa Indonesia). Anda dapat berkontribusi di Wikidata.
- Halaman asli Smithsonian GVP
⚠ Untuk referensi saja. Bukan untuk tanggap darurat.