Lewati ke konten utama
← Kembali ke peta
⇄ Bandingkan

Deception Island

Kaldera · Antarctica · 602 m

Deception Island in Antarctica contains a 7-km-wide caldera flooded by the sea. A narrow passageway named Neptune’s Bellows cuts through the caldera wall to the left. Numerous vents located along the caldera ring fractures around the low, 14-km-wide island have been active during historical time. Maars produced by magma-water interaction occur across the shores of the 190-m-deep Port Foster.
Deception Island in Antarctica contains a 7-km-wide caldera flooded by the sea. A narrow passageway named Neptune’s Bellows cuts through the caldera wall to the left. Numerous vents located along the caldera ring fractures around the low, 14-km-wide island have been active during historical time. Maars produced by magma-water interaction occur across the shores of the 190-m-deep Port Foster. · Foto: Photo by Juan Bastias (published in González-Ferrán, 1995). · Wikimedia Commons
Tipe
Kaldera
Negara
Antarctica
Wilayah
Antarctic-Scotia Volcanic Regions / South Shetlands Volcanic Arc
Ketinggian
602 m
Koordinat
-62.957, -60.637
Letusan terakhir
1970
Kondisi tektonik
Intraplate / Continental crust (> 25 km)
Bentuk lahan
Caldera
Batuan utama
Basalt / Picro-Basalt
Ringkasan geologi

Ring-shaped Deception Island, at the SW end of the South Shetland Islands, NE of Graham Land Peninsula, was constructed along the axis of the Bransfield Rift spreading center. A narrow passageway named Neptunes Bellows provides an entrance to a natural harbor within the 8.5 x 10 km caldera that was utilized as an Antarctic whaling station. Numerous vents along ring fractures circling the low 14-km-wide island have been reported active for more than 200 years. Maars line the shores of 190-m-deep Port Foster caldera bay. Among the largest of these maars is 1-km-wide Whalers Bay, at the entrance to the harbor. Eruptions during the past 8,700 years have been dated from ash layers in lake sediments on the Antarctic Peninsula and neighboring islands.

Ringkasan Wikipedia

Ringkasan Inggris

Deception Island is in the South Shetland Islands close to the Antarctic Peninsula with a large and usually "safe" natural harbour, which is occasionally affected by the underlying active volcano. This island is the caldera of an active volcano, which seriously damaged local scientific stations in 1967 and 1969. The island previously held a whaling station. It has now become a tourist destination, attracting over 15,000 visitors annually. Two research stations are operated by Argentina and Spain during the summer season. While various countries have asserted sovereignty, it is still administered under the Antarctic Treaty System, meaning it is under no control.

Wikipedia · CC BY-SA · Baca artikel lengkap →

Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
6750 BCE~6459 BCE · 1 letusan · VEI maks. ?3255 BCE~2964 BCE · 1 letusan · VEI maks. ?2964 BCE~2673 BCE · 1 letusan · VEI maks. ?1799 BCE~1508 BCE · 1 letusan · VEI maks. ?925 BCE~634 BCE · 3 letusan · VEI maks. ?634 BCE~343 BCE · 1 letusan · VEI maks. ?343 BCE~52 BCE · 2 letusan · VEI maks. ?52 BCE~240 · 1 letusan · VEI maks. ?531~822 · 1 letusan · VEI maks. ?822~1113 · 1 letusan · VEI maks. ?1113~1405 · 1 letusan · VEI maks. ?1405~1696 · 2 letusan · VEI maks. ?1696~1987 · 11 letusan · VEI maks. 36750 BCE4711 BCE2381 BCE343 BCE1696

Garis waktu rinci

  1. 1987VEI ?Perkiraan geologi
    1987-07-23 – Berlangsung
  2. 1972VEI ?Perkiraan geologi
    1972-09-29 – 1972-09-29
  3. 1970VEI 3Teramati
    1970-08-12 – Berlangsung
    NE of Telefon Bay
  4. 1969VEI 3Teramati
    1969-02-21 – 1969-03-16
    West side of Mount Pond
  5. 1967VEI 3Teramati
    1967-12-04 – 1967-12-07
    North side (Telefon Bay, Yelcho I)
  6. 1912 (±5 tahun)VEI 3Teramati
    1912 – Berlangsung
    SW part of island
  7. 1871 (±40 tahun)VEI ?Perkiraan geologi
    1871 – Berlangsung
    SE side of caldera bay (Kroner Lake)
  8. 1842VEI 2Teramati
    1842-02 – Berlangsung
    S caldera rim (flanks of Mt Kirkwood)
  9. 1839VEI ?Perkiraan geologi
    1839 – Berlangsung
    Crater Lake, Mt. Kirkwood area
  10. 1827 (±2 tahun)VEI ?Teramati
    1827 – Berlangsung
    NE side caldera bay (Pendulum Cove)
  11. 1800VEI ?Teramati
    1800 – Berlangsung
    N side caldera bay (near Telefon Bay)
  12. 1641 (±3 tahun)VEI ?Perkiraan geologi
    1641 – Berlangsung
  13. 1500VEI ?Perkiraan geologi
    1500 – Berlangsung
  14. 1200VEI ?Perkiraan geologi
    1200 – Berlangsung
  15. 900VEI ?Perkiraan geologi
    900 – Berlangsung
  16. 600VEI ?Perkiraan geologi
    600 – Berlangsung
  17. 100VEI ?Perkiraan geologi
    100 – Berlangsung
  18. 100 SMVEI ?Perkiraan geologi
    BCE 100 – Berlangsung
  19. 250 SMVEI ?Perkiraan geologi
    BCE 250 – Berlangsung
  20. 550 SMVEI ?Perkiraan geologi
    BCE 550 – Berlangsung
  21. 700 SMVEI ?Perkiraan geologi
    BCE 700 – Berlangsung
  22. 750 SMVEI ?Perkiraan geologi
    BCE 750 – Berlangsung
  23. 800 SMVEI ?Perkiraan geologi
    BCE 800 – Berlangsung
  24. 1550 SMVEI ?Perkiraan geologi
    BCE 1550 – Berlangsung
  25. 2750 SMVEI ?Perkiraan geologi
    BCE 2750 – Berlangsung
  26. 3250 SMVEI ?Perkiraan geologi
    BCE 3250 – Berlangsung
  27. 6750 SMVEI ?Perkiraan geologi
    BCE 6750 – Berlangsung

Tautan eksternal

⚠ Untuk referensi saja. Bukan untuk tanggap darurat.