Rusia · Kaldera
Maly Semyachik
- Tipe
- Kaldera
- Ketinggian
- 1527 m
- Letusan terakhir
- 1952
- Tipe
- Kaldera
- Negara
- Rusia
- Wilayah
- Pasifik Barat Laut / Eastern Kamchatka Volcanic Arc
- Ketinggian
- 1527 m
- Koordinat
- 54.135, 159.674
- Letusan terakhir
- 1952
- Kondisi tektonik
- Zona subduksi / Kerak benua (> 25 km)
- Bentuk lahan
- Komposit
- Batuan utama
- Basal / Pikrobasal
Ringkasan geologi
Maly Semyachik is a compound stratovolcano located in a 10-km-wide caldera within the 15 x 20 km mid-Pleistocene Stena-Soboliny caldera. Following construction during the late Pleistocene of the Paleo-Semiachik volcano beginning about 20,000 years before present (BP), activity migrated to the SW, forming Meso-Semiachik (about 11,000-9,000 BP) and Ceno-Semiachik (about 8,000 BP to the present). An initial stage lasting about 3,500 years was dominantly explosive, constructing the present cone. A second stage beginning about 4,400 years ago was marked by alternating constructive and destructive processes. A crater lake fills the historically active Troitsky Crater, which formed during a large explosive eruption about 400 years ago.
Ringkasan Wikipedia
Ringkasan InggrisMaly Semyachik is a stratovolcano located in the eastern part of Kamchatka Peninsula, Russia. It is a compound stratovolcano located in a 10-km-wide caldera within the 15×20-km mid-Pleistocene Stena-Soboliny caldera. Three overlapping stratovolcanoes were constructed sequentially along a NE-SW line, with the youngest cone, Tseno-Semyachik, at the southwest end. A hot, acidic crater lake fills the historically active Troitsky Crater, which formed during a large explosive eruption of Ceno-Semiachik about 400 years ago.
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Riwayat letusan
23 tercatatGlosariumGaris waktu rinci
- 1952VEI 2Teramati1952-12-05 – akhir tidak diketahuiCeno-Semiachik (Toitsky Crater)
- 1945VEI 2Teramati1945-09-16 – 1946-04-15Ceno-Semiachik (Toitsky Crater)
- 1852VEI 2Teramati1852-04-15 – 1852-07-16Ceno-Semiachik (Troitsky Crater)
- 1851VEI 2Teramati1851-09-16 – akhir tidak diketahuiCeno-Semiachik (Troitsky Crater)
- 1804VEI 3Teramati1804-07-02 – akhir tidak diketahuiCeno-Semiachik (Troitsky Crater)
- 1550VEI 4Perkiraan geologi1550 – akhir tidak diketahuiCeno-Semiachik (Crater VI--Troitsky)
- 1400 (±50 tahun)VEI ?Perkiraan geologi1400 – akhir tidak diketahuiCeno-Semiachik (Crater V)
- 550 SMVEI ?Perkiraan geologi550 SM – akhir tidak diketahuiCeno-Semiachik
- 650 SMVEI ?Perkiraan geologi650 SM – akhir tidak diketahuiCeno-Semiachik
- 850 SMVEI ?Perkiraan geologi850 SM – akhir tidak diketahuiCeno-Semiachik
- 1800 SM (±50 tahun)VEI ?Perkiraan geologi1800 SM – akhir tidak diketahuiCeno-Semiachik (SW flank)
- 2250 SMVEI ?Perkiraan geologi2250 SM – akhir tidak diketahuiCeno-Semiachik
- 2450 SMVEI ?Perkiraan geologi2450 SM – akhir tidak diketahuiCeno-Semiachik (Crater IV)
- 3500 SM (±50 tahun)VEI ?Perkiraan geologi3500 SM – akhir tidak diketahuiCeno-Semiachik flank (Obmanuvshy)
- 4500 SM (±50 tahun)VEI ?Perkiraan geologi4500 SM – akhir tidak diketahuiCeno-Semiachik flank (Yushny cone)
- 4650 SMVEI ?Perkiraan geologi4650 SM – akhir tidak diketahuiCeno-Semiachik
- 5050 SMVEI ?Perkiraan geologi5050 SM – akhir tidak diketahuiCeno-Semiachik
- 5450 SMVEI ?Perkiraan geologi5450 SM – akhir tidak diketahuiCeno-Semiachik
- 5750 SMVEI ?Perkiraan geologi5750 SM – akhir tidak diketahuiCeno-Semiachik
- 5850 SMVEI ?Perkiraan geologi5850 SM – akhir tidak diketahuiCeno-Semiachik
- 6150 SMVEI ?Perkiraan geologi6150 SM – akhir tidak diketahuiCeno-Semiachik
- 6950 SMVEI ?Perkiraan geologi6950 SM – akhir tidak diketahuiMeso-Semiachik east flank (Vostochny)
- 7550 SMVEI ?Perkiraan geologi7550 SM – akhir tidak diketahuiMeso-Semiachik
Gunung api terdekat
Tautan eksternal
⚠ Untuk referensi saja. Bukan untuk tanggap darurat.