Estados Unidos · Estratovolcán
Monte Amukta
Amukta
- Tipo
- Estratovolcán
- Altitud
- 1066 m
- Última erupción
- 1996
- Tipo
- Estratovolcán
- País
- Estados Unidos
- Región
- América del Norte / Aleutian Ridge Volcanic Arc
- Altitud
- 1066 m
- Coordenadas
- 52.500, -171.252
- Última erupción
- 1996
- Contexto tectónico
- Zona de subducción / Corteza intermedia (15-25 km)
- Forma volcánica
- Compuesto
- Roca principal
- Andesita / Andesita basáltica
Resumen geológico
The symmetrical Amukta stratovolcano lies in the central Aleutians SW of Chagulak Island and is the westernmost of the Islands of the Four Mountains group. The stratovolcano was constructed at the northern side of an arcuate caldera-like feature that is open to the sea along the southern coast of the 8-km-wide Amukta Island. It overlies a broad shield volcano and is topped by a 400-m-wide crater, and a cinder cone is located near the NE coast. There have been several reported eruptions from both summit and flank vents.
Resumen de Wikipedia
Resumen en inglésThe undissected stratovolcano of Amukta volcano makes up most of nearly circular, 7.7-km-wide Amukta Island. It is the westernmost of the Islands of Four Mountains chain. The nearest islands to it are Yunaska and Seguam Island; it is separated from Seguam Island by Amukta Pass. The cone, about 5.8 km in basal diameter and topped by a 0.4 km wide summit crater, appears on synthetic-aperture radar imagery to be built upon a 300+ meter high, east-west trending arcuate ridge.
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Historial de erupciones
8 registradasGlosarioLínea de tiempo detallada
- 1997VEI 1Observado1997-03-03 – fin desconocido
- 1996VEI 1Observado1996-09-17 – 1996-09-18
- 1987VEI 1Observado1987-09-04 – 1987-09-04
- 1963VEI 3Observado1963-02-13 – fin desconocido
- 1878VEI ?Observado1878-07-02 – fin desconocido
- 1876VEI ?Método no indicado1876-07-02 – fin desconocido
- 1786VEI 3Observado1786-06 – 1791
- 1770VEI ?Método no indicado1770 – fin desconocido
Volcanes cercanos
Enlaces externos
⚠ Solo como referencia. No apto para respuesta ante emergencias.