Vanuatu · Stratovolkan
Eastern Gemini Seamount
Gemini-Oscostar
- Tipe
- Stratovolkan
- Ketinggian
- 33 m (bawah laut)
- Letusan terakhir
- 1996
- Tipe
- Stratovolkan
- Negara
- Vanuatu
- Wilayah
- Pasifik Barat Daya / Vanuatu Volcanic Arc
- Ketinggian
- 33 m (bawah laut)
- Koordinat
- -20.957, 170.130
- Letusan terakhir
- 1996
- Kondisi tektonik
- Zona rift / Kerak samudra (< 15 km)
- Bentuk lahan
- Gugusan gunung api
- Batuan utama
- Basal / Pikrobasal
Ringkasan geologi
The submarine Gemini-Oscostar volcanic field lies near the southern end of the Vanuatu (or New Hebrides) Volcanic Arc, ~100 km S of Aneityum Island. Water discoloration and bursts of very dark water were observed from Oscostar seamount (also known as Eastern Gemini) from a passing ship on 18 February 1996. Overflights as late as 22 February noted periodic explosions that ejected black material to about 20 m above sea level. It consists of an elongated NNE-SSW-trending ridge of submarine volcanoes with satellitic cones. Several basaltic samples and one andesitic rock dredged in 1989 were described as glassy, vesicular, and extremely fresh.
Ringkasan Wikipedia
Ringkasan InggrisThe Eastern Gemini Seamount, also known as Oscostar, is a seamount in the southwestern Pacific Ocean, about halfway between Vanuatu's Tanna and Matthew Islands. The only recorded eruption from Eastern Gemini was observed by a passing ship on February 18, 1996 when bursts of very dark water were observed.
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Riwayat letusan
1 tercatatGlosariumGaris waktu rinci
- 1996VEI 1Teramati1996-02-18 – 1996-02-22
Gunung api terdekat
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