Monte Baker
Baker
Estratovolcán · United States · 3285 m
- Tipo
- Estratovolcán
- País
- United States
- Región
- América del Norte / Garibaldi Volcanic Arc
- Altitud
- 3285 m
- Coordenadas
- 48.777, -121.813
- Última erupción
- 1880
- Contexto tectónico
- Subduction zone / Continental crust (> 25 km)
- Forma volcánica
- Composite
- Roca principal
- Andesite / Basaltic Andesite
Resumen geológico
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.
Resumen de Wikipedia
Resumen en inglésMount 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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Historial de erupciones
Línea de tiempo detallada
- 1884VEI ?Estimación geológica1884-07-02 – En cursoSherman Crater
- 1880VEI 2Observado1880-09-07 – 1880-11-27Sherman Crater
- 1870VEI 2Observado1870-07-02 – En cursoSherman Crater
- 1869VEI ?Estimación geológica1869-06-16 – En cursoSherman Crater
- 1867VEI ?Estimación geológica1867-03-16 – En cursoSherman Crater
- 1865VEI ?Estimación geológica1865-07-02 – En cursoSherman Crater
- 1863VEI 2Observado1863-07-16 – En cursoSherman Crater
- 1860VEI ?Estimación geológica1860-12-16 – En cursoSherman Crater
- 1859VEI 2Observado1859-11-16 – 1860-04-26Sherman Crater
- 1858VEI 2Observado1858-07-02 – En cursoSherman Crater
- 1856VEI ?Estimación geológica1856-07-02 – En cursoSherman Crater
- 1854VEI 2Observado1854-07-02 – En cursoSherman Crater
- 1852VEI 2Observado1852-12-01 – 1853-01-16Sherman Crater
- 1850VEI ?Estimación geológica1850-03-16 – En cursoSherman Crater
- 1846VEI ?Estimación geológica1846-07-02 – En curso
- 1843VEI 3Observado1843-07-02 – En cursoSherman Crater
- 1820VEI 2Observado1820-07-02 – En curso
- 1792VEI ?Estimación geológica1792-06 – En curso
- 4550 a. C.VEI 3Estimación geológicaBCE 4550 – En cursoSherman Crater?
- 7850 a. C.VEI ?Estimación geológicaBCE 7850 – En cursoSouth flank (Schreibers Meadow Cone)
Enlaces externos
⚠ Solo como referencia. No apto para respuesta ante emergencias.