Papua Nugini · Stratovolkan
Karkar Island
Karkar
- Tipe
- Stratovolkan
- Ketinggian
- 1839 m
- Letusan terakhir
- 1979
- Tipe
- Stratovolkan
- Negara
- Papua Nugini
- Wilayah
- Pasifik Barat Daya / Bismarck Volcanic Arc
- Ketinggian
- 1839 m
- Koordinat
- -4.647, 145.976
- Letusan terakhir
- 1979
- Kondisi tektonik
- Zona subduksi / Kerak benua (> 25 km)
- Bentuk lahan
- Komposit
- Batuan utama
- Andesit / Andesit basaltik
Ringkasan geologi
Karkar is a 19 x 25 km forest-covered island that is truncated by two nested summit calderas. The 5.5 km outer caldera was formed during one or more eruptions, the last of which occurred 9,000 years ago. The steep-walled 300-m-deep, 3.2 km diameter, inner caldera was formed sometime between 1,500 and 800 years ago. Cones are present on the N and S flanks of this basaltic-to-andesitic volcano; a linear array of small cones extends from the northern rim of the outer caldera nearly to the coast. Recorded eruptions date back to 1643 from Bagiai, a pyroclastic cone constructed within the inner caldera, the floor of which is covered by young, mostly unvegetated andesitic lava flows.
Ringkasan Wikipedia
Ringkasan InggrisKarkar Island is an oval-shaped volcanic island located in the Bismarck Sea, about 74 kilometres (46 mi) off the north coast of mainland Papua New Guinea in Madang Province, from which it is separated by the Isumrud Strait. The island is about 25 km (16 mi) in length and 19 km (12 mi) in width. In the centre is an active volcano with two nested calderas.
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Riwayat letusan
19 tercatatGlosariumGaris waktu rinci
- 2014VEI 1Teramati2014-03-26 – 2014-03-27Uncertain
- 2013VEI 3Teramati2013-01-29 – 2013-03-15Bagiai cone
- 2012VEI 3Teramati2012-02-01 – 2012-02-01Unknown
- 2010VEI 1Teramati2010-02-25 – 2010-02-26Uncertain
- 2009VEI ?Metode tidak dinyatakan2009-05-01 – akhir tidak diketahui
- 1980VEI 1Metode tidak dinyatakan1980-01-07 – 1980-01-17
- 1979VEI 2Teramati1979-01-12 – 1979-08-09SE foot of Bagiai
- 1974VEI 2Teramati1974-02-14 – 1974-08-08Bagiai
- 1974VEI 2Teramati1974-12-30 – 1975-06-26Bagiai
- 1962VEI 2Metode tidak dinyatakan1962-07-02 – akhir tidak diketahuiUlumam
- 1895VEI 2Teramati1895-06-17 – 1895-08-16
- 1885VEI 2Teramati1885-07-02 – akhir tidak diketahui
- 1830VEI ?Metode tidak dinyatakan1830-07-02 – akhir tidak diketahui
- 1643VEI 3Teramati1643-04-20 – akhir tidak diketahui
- 1070 (±200 tahun)VEI ?Perkiraan geologi1070 – akhir tidak diketahuiSouth flank (Patilo Cone)
- 730VEI 4Perkiraan geologi730 – akhir tidak diketahui
- 520 (±100 tahun)VEI 4Perkiraan geologi520 – akhir tidak diketahui
- 870 SM (±75 tahun)VEI ?Perkiraan geologi870 SM – akhir tidak diketahui
- 7140 SM (±150 tahun)VEI 4Perkiraan geologi7140 SM – akhir tidak diketahui
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