Stati Uniti · Stratovulcano
Monte Baker
Baker
- Tipo
- Stratovulcano
- Altitudine
- 3285 m
- Ultima eruzione
- 1880
- Tipo
- Stratovulcano
- Paese
- Stati Uniti
- Regione
- Nord America / Garibaldi Volcanic Arc
- Altitudine
- 3285 m
- Coordinate
- 48.777, -121.813
- Ultima eruzione
- 1880
- Contesto tettonico
- Zona di subduzione / Crosta continentale (> 25 km)
- Forma vulcanica
- Composito
- Roccia principale
- Andesite / Andesite basaltica
Sintesi geologica
Mount Baker is a glacier-covered 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, its largest eruptive event during the Holocene, was accompanied by a collapse that sent lahars down the Nooksack drainage. Residents 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 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), while the Lummi Nation knows it as Koma Kulshan.
Sintesi da Wikipedia
Riassunto in ingleseMount 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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Storia delle eruzioni
20 registrateGlossarioCronologia dettagliata
- 1884VEI ?Metodo non indicato1884-07-02 – fine sconosciutaSherman Crater
- 1880VEI 2Osservata1880-09-07 – 1880-11-27Sherman Crater
- 1870VEI 2Osservata1870-07-02 – fine sconosciutaSherman Crater
- 1869VEI ?Metodo non indicato1869-06-16 – fine sconosciutaSherman Crater
- 1867VEI ?Metodo non indicato1867-03-16 – fine sconosciutaSherman Crater
- 1865VEI ?Metodo non indicato1865-07-02 – fine sconosciutaSherman Crater
- 1863VEI 2Osservata1863-07-16 – fine sconosciutaSherman Crater
- 1860VEI ?Metodo non indicato1860-12-16 – fine sconosciutaSherman Crater
- 1859VEI 2Osservata1859-11-16 – 1860-04-26Sherman Crater
- 1858VEI 2Osservata1858-07-02 – fine sconosciutaSherman Crater
- 1856VEI ?Metodo non indicato1856-07-02 – fine sconosciutaSherman Crater
- 1854VEI 2Osservata1854-07-02 – fine sconosciutaSherman Crater
- 1852VEI 2Osservata1852-12-01 – 1853-01-16Sherman Crater
- 1850VEI ?Metodo non indicato1850-03-16 – fine sconosciutaSherman Crater
- 1846VEI ?Metodo non indicato1846-07-02 – fine sconosciuta
- 1843VEI 3Osservata1843-07-02 – fine sconosciutaSherman Crater
- 1820VEI 2Osservata1820-07-02 – fine sconosciuta
- 1792VEI ?Metodo non indicato1792-06 – fine sconosciuta
- 4550 a.C.VEI 3Stima geologica4550 a.C. – fine sconosciutaSherman Crater?
- 7850 a.C.VEI ?Stima geologica7850 a.C. – fine sconosciutaSouth flank (Schreibers Meadow Cone)
Vulcani nelle vicinanze
Link esterni
⚠ Solo a scopo informativo. Non adatto a situazioni di emergenza.