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Gunung Baker

Baker

Stratovolkan · United States · 3285 m

The glaciated Mount Baker is the northernmost of Washington's active volcanoes in the northern Cascade Range, seen here from the SE above Baker Lake. Historical eruptions have originated from Sherman Crater to the left of the summit. Minor phreatic explosions were observed during the 19th century by early settlers in the Puget Sound area as far away as Victoria, British Columbia.
The glaciated Mount Baker is the northernmost of Washington's active volcanoes in the northern Cascade Range, seen here from the SE above Baker Lake. Historical eruptions have originated from Sherman Crater to the left of the summit. Minor phreatic explosions were observed during the 19th century by early settlers in the Puget Sound area as far away as Victoria, British Columbia. · Foto: Photo by Lee Siebert, 1981 (Smithsonian Institution). · Wikimedia Commons
Tipe
Stratovolkan
Negara
United States
Wilayah
Amerika Utara / Garibaldi Volcanic Arc
Ketinggian
3285 m
Koordinat
48.777, -121.813
Letusan terakhir
1880
Kondisi tektonik
Subduction zone / Continental crust (> 25 km)
Bentuk lahan
Composite
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

Mount Baker, the northernmost of Washington's volcanoes, is a glacier-clad andesitic stratovolcano constructed above the E flank of the eroded mid-Pleistocene Black Buttes volcano and SW of the early Pleistocene 4.5 x 8 km rhyodacitic Kulshan caldera. With the exception of the Schreibers Meadow cinder cone on the SE flank, which formed about 9,800 years ago, Holocene volcanism has been confined to the central conduit. A major eruption about 6,500 years ago, it's largest eruptive event during the Holocene, was accompanied by a collapse that sent lahars down the Nooksack drainage. Early settlers in the Puget Sound region as far away as Victoria, British Columbia, observed 19th-century activity, all of which consisted of relatively minor phreatic eruptions. Sherman Crater, the historically active crater immediately south of the summit, has been the site of increased steam emission since 1975. The Nooksack Indian Tribe referred to the volcano as Kweq Smaenit, the "White Mountain." The Lummi Nation knew Mount Baker as Koma Kulshan.

Ringkasan Wikipedia

Ringkasan Inggris

Mount Baker, also known as Koma Kulshan or simply Kulshan, is a 10,781-foot (3,286 m) active glacier-covered andesitic stratovolcano in the Cascade Volcanic Arc and the North Cascades of Washington State in the United States. Mount Baker has the second-most thermally active crater in the Cascade Range after Mount St. Helens. About 30 miles (48 km) due east of the city of Bellingham, Whatcom County, Mount Baker is the youngest volcano in the Mount Baker volcanic field. While volcanism has persisted here for some 1.5 million years, the current volcanic cone is likely no more than 140,000 years old, and possibly no older than 80–90,000 years. Older volcanic edifices have mostly eroded away due to glaciation.

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Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
7850 BCE~7526 BCE · 1 letusan · VEI maks. ?4605 BCE~4281 BCE · 1 letusan · VEI maks. 31560~1884 · 18 letusan · VEI maks. 37850 BCE5579 BCE2983 BCE712 BCE1560

Garis waktu rinci

  1. 1884VEI ?Perkiraan geologi
    1884-07-02 – Berlangsung
    Sherman Crater
  2. 1880VEI 2Teramati
    1880-09-07 – 1880-11-27
    Sherman Crater
  3. 1870VEI 2Teramati
    1870-07-02 – Berlangsung
    Sherman Crater
  4. 1869VEI ?Perkiraan geologi
    1869-06-16 – Berlangsung
    Sherman Crater
  5. 1867VEI ?Perkiraan geologi
    1867-03-16 – Berlangsung
    Sherman Crater
  6. 1865VEI ?Perkiraan geologi
    1865-07-02 – Berlangsung
    Sherman Crater
  7. 1863VEI 2Teramati
    1863-07-16 – Berlangsung
    Sherman Crater
  8. 1860VEI ?Perkiraan geologi
    1860-12-16 – Berlangsung
    Sherman Crater
  9. 1859VEI 2Teramati
    1859-11-16 – 1860-04-26
    Sherman Crater
  10. 1858VEI 2Teramati
    1858-07-02 – Berlangsung
    Sherman Crater
  11. 1856VEI ?Perkiraan geologi
    1856-07-02 – Berlangsung
    Sherman Crater
  12. 1854VEI 2Teramati
    1854-07-02 – Berlangsung
    Sherman Crater
  13. 1852VEI 2Teramati
    1852-12-01 – 1853-01-16
    Sherman Crater
  14. 1850VEI ?Perkiraan geologi
    1850-03-16 – Berlangsung
    Sherman Crater
  15. 1846VEI ?Perkiraan geologi
    1846-07-02 – Berlangsung
  16. 1843VEI 3Teramati
    1843-07-02 – Berlangsung
    Sherman Crater
  17. 1820VEI 2Teramati
    1820-07-02 – Berlangsung
  18. 1792VEI ?Perkiraan geologi
    1792-06 – Berlangsung
  19. 4550 SMVEI 3Perkiraan geologi
    BCE 4550 – Berlangsung
    Sherman Crater?
  20. 7850 SMVEI ?Perkiraan geologi
    BCE 7850 – Berlangsung
    South flank (Schreibers Meadow Cone)

Tautan eksternal

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