Lewati ke konten utama
← Kembali ke peta
⇄ Bandingkan

Mount Wrangell

Wrangell

Gunung api perisai · United States · 4278 m

Mount Wrangell, on the right skyline, is part of the Wrangell volcanic field. There are two large calderas at the summit and the inner ice-filled caldera contains three craters. Minor, possibly phreatic eruptions have occurred during the 20th century. To the left is rounded Mount Zanetti, a flank cone. The sharp-topped peak to the far-left of this view from the SW is a flank cone of the neighboring Pleistocene Mount Drum.
Mount Wrangell, on the right skyline, is part of the Wrangell volcanic field. There are two large calderas at the summit and the inner ice-filled caldera contains three craters. Minor, possibly phreatic eruptions have occurred during the 20th century. To the left is rounded Mount Zanetti, a flank cone. The sharp-topped peak to the far-left of this view from the SW is a flank cone of the neighboring Pleistocene Mount Drum. · Foto: Photo by B. Cella (National Park Service). · Wikimedia Commons
Tipe
Gunung api perisai
Negara
United States
Wilayah
North America Volcanic Regions / Wrangell Volcanic Arc
Ketinggian
4278 m
Koordinat
62.006, -144.017
Letusan terakhir
1912
Kondisi tektonik
Intraplate / Continental crust (> 25 km)
Bentuk lahan
Shield
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

Mount Wrangell is one of the world's largest continental-margin volcanoes, with a diameter of 30 km at 2,000 m elevation. The andesitic shield volcano has produced fluid lava flows as long as 58 km and contains an ice-filled caldera 4-6 km in diameter and 1 km deep, located within an older 15-km-wide caldera. Most of the edifice was constructed during eruptions between about 600,000 and 200,000 years ago. Formation of the summit caldera followed sometime between about 200,000 and 50,000 years ago. Three post-caldera craters are located at the broad summit, along the northern and western caldera rim. A steep-sided flank cinder cone, Mount Zanetti, is located 6 km NW of the summit. The westernmost cone has been the source of infrequent eruptions beginning in the 18th century. Increased heat flux in recent years has melted large volumes of ice in the northern crater.

Ringkasan Wikipedia

Ringkasan Inggris

Mount Wrangell, is a massive shield volcano located in Wrangell-St. Elias National Park and Preserve in southeastern Alaska, United States. The shield rises over 12,000 feet (3,700 m) above the Copper River to its southwest. Its volume is over 220 cubic miles (920 km3), making it more than twice as massive as Mount Shasta in California, the largest stratovolcano by volume in the Cascades. It is part of the Wrangell Mountains as well as the Wrangell Volcanic Field, which extends for more than 250 kilometers (160 mi) across Southcentral Alaska into the Yukon Territory in Canada, and has an eruptive history spanning the time from Pleistocene to Holocene.

Wikipedia · CC BY-SA · Baca artikel lengkap →

Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
190~371 · 1 letusan · VEI maks. 41640~1821 · 2 letusan · VEI maks. 21821~2002 · 11 letusan · VEI maks. 2190552109614581821

Garis waktu rinci

  1. 2002VEI 1Teramati
    2002-08-01 – 2002-08-02
  2. 1999VEI 1Teramati
    1999-05-14 – 1999-05-14
  3. 1969VEI 1Teramati
    1969-08-16 – Berlangsung
    West Crater
  4. 1930VEI ?Perkiraan geologi
    1930-06-30 – Berlangsung
  5. 1921VEI ?Perkiraan geologi
    1921-07-03 – 1921-07-03
    North flank?
  6. 1911VEI 1Teramati
    1911-04-14 – 1912-09-14
  7. 1907VEI ?Perkiraan geologi
    1907-04-01 – Berlangsung
  8. 1902VEI 2Teramati
    1902-07-15 – Berlangsung
    West Crater
  9. 1900VEI 2Teramati
    1900-06 – Berlangsung
  10. 1899VEI 2Teramati
    1899-09-03 – Berlangsung
  11. 1884VEI 2Perkiraan geologi
    1884-10-26 – 1885-02-04
  12. 1819VEI 2Perkiraan geologi
    1819 – Berlangsung
  13. 1784VEI 2Perkiraan geologi
    1784-07 – Berlangsung
  14. 190 (±200 tahun)VEI 4Perkiraan geologi
    190 – Berlangsung

Tautan eksternal

⚠ Untuk referensi saja. Bukan untuk tanggap darurat.