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Montañas Hudson

Hudson Mountains

Estratovolcán · Antarctica · 749 m

Hudson Mountains volcanic field comprises about 20 volcanic nunataks. These are peaks protruding from ice, and here represent the surface expression of multiple volcanic vents. At least four nunataks can be seen faintly in this image, looking across the southern Hudson Mountains from the west. The exposed ridge in the left foreground is Webber Nunatak. The uppermost, largely ice-covered nunatak seen here is Mount Manthe, one of the largest peaks in this volcanic field and dated to about 5 million years ago. A tephra layer from this field was erupted about 2,000 years ago.
Hudson Mountains volcanic field comprises about 20 volcanic nunataks. These are peaks protruding from ice, and here represent the surface expression of multiple volcanic vents. At least four nunataks can be seen faintly in this image, looking across the southern Hudson Mountains from the west. The exposed ridge in the left foreground is Webber Nunatak. The uppermost, largely ice-covered nunatak seen here is Mount Manthe, one of the largest peaks in this volcanic field and dated to about 5 million years ago. A tephra layer from this field was erupted about 2,000 years ago. · Foto: U. S. Navy photo TMA 2035 F31 203. · Wikimedia Commons
Tipo
Estratovolcán
País
Antarctica
Región
Antarctic-Scotia Volcanic Regions / Western Antarctica Volcanic Province
Altitud
749 m
Coordenadas
-74.330, -99.420
Última erupción
-207
Contexto tectónico
Intraplate / Continental crust (> 25 km)
Forma volcánica
Composite
Roca principal
Basalt / Picro-Basalt
Resumen geológico

The Hudson Mountains, located along the Walgreen Coast in Antarctica's western Ellsworth Land, contain many only slightly eroded cones forming nunataks protruding above the Antarctic icecap. The cinder cones apparently rest on three extensively eroded Miocene stratovolcanoes, Teeters Nunatak, Mount Moses, and Mount Manthe. Subaerial basaltic lava flows dominate, but subglacial or subaqueous tuffs and lava flows are also present. A tephra layer from an eruption of a subglacial volcano in the Hudson Mountains was dated from ice thickness at about 200 BCE. The possible presence of steam was reported at one of the Hudson volcanoes during 1974. Satellite data suggested that an eruption of Webber Nunatak took place during 1985, although this has not been confirmed (LeMasurier and Thomson, 1990).

Resumen de Wikipedia

Las montañas Hudson son un grupo de conos parásitos, que forman nunataks apenas por sobre la superficie de la capa de hielo antártica al oeste de la tierra de Ellsworth. Se encuentran al este de la bahía de Cranton y la bahía de la isla Pine en el extremo este del mar de Amundsen, y están definidas en el norte por la barrera de hielo Cosgrove y por el sur por el glaciar de la isla Pine.

Wikipedia · CC BY-SA · Leer artículo completo →

Historial de erupciones

Resumen (VEI en el tiempo)
Haga clic en una barra para ver erupciones individuales
207 BCE~8 BCE · 1 erupciones · VEI máx. 41786~1985 · 1 erupciones · VEI máx. ?207 BCE39178913871786

Línea de tiempo detallada

  1. 1985VEI ?Estimación geológica
    1985-07-02 – En curso
    Webber Nunatak
  2. 207 a. C. (±240 años)VEI 4Estimación geológica
    BCE 207 – En curso
    Hudson Mountains Subglacial Volcano

Enlaces externos

⚠ Solo como referencia. No apto para respuesta ante emergencias.