Japón · Estratovolcán
Monte Chōkai
Chokaisan
- Tipo
- Estratovolcán
- Altitud
- 2236 m
- Última erupción
- 1974
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- Tipo
- Estratovolcán
- País
- Japón
- Región
- Pacífico Noroccidental / Northeast Japan Volcanic Arc
- Altitud
- 2236 m
- Coordenadas
- 39.099, 140.049
- Última erupción
- 1974
- Contexto tectónico
- Zona de subducción / Corteza continental (> 25 km)
- Forma volcánica
- Compuesto
- Roca principal
- Andesita / Andesita basáltica
Resumen geológico
Chokaisan is composed of two overlapping stratovolcanoes with a conical profile that inspired the local names of Akita-Fuji or Dewa-Fuji. The summit of the gently sloping western edifice (Nishi-Chokaisan) is cut by a large scarp open to the south that contains lava domes. The younger eastern volcano (Higashi-Chokaisan) began forming about 20,000 years ago, and also has a large scarp, breached to the north. An eruption about 2,600 years ago was the source of the voluminous Kisakata debris avalanche, which reached the Pacific coast. Two post-caldera lava domes have been constructed at the upper SE end of the caldera. Intermittent reports of eruptions date back to the 6th century CE.
Resumen de Wikipedia
Resumen en inglésMount Chōkai is an active volcano located on the border of Akita and Yamagata in the Tōhoku region of Japan, and is 2,236 m (7,336 ft) tall. Because of its (roughly) symmetrical shape and massive size, it is also variously known as Dewa Fuji (出羽富士), Akita Fuji (秋田富士) or Shōnai Fuji (庄内富士) depending on the location of the viewer. In addition to being one of the 100 Famous Landscapes of Japan, it is also included as one of the 100 famous mountains in Japan, and famous 100 Geographical Features of Japan. It is surrounded by Chōkai Quasi-National Park. It is also a National Historic Site of Japan, and is regarded as a sacred mountain by followers of the Shugendō branch of Shinto which has the shrine Chōkaisan Ōmonoimi Shrine there and is popular with hikers.
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Historial de erupciones
31 registradasGlosarioLínea de tiempo detallada
- 1974VEI 1Observado1974-03-01 – 1974-04-30E side of Shinzan, W of Kojin-yama
- 1834VEI 2Observado1834-07-09 – 1834-07-16
- 1821VEI 2Observado1821-05-23 – fin desconocidoNear Shinzan and Shichiko-zan
- 1800VEI 2Observado1800-12-16 – 1804-07-16Shinzan (foot of Kojin-yama)
- 1764VEI 2Método no indicado1764 – fin desconocido
- 1740VEI 2Observado1740-06 – 1747Small crater at foot of Kojin-yama
- 1738VEI 2Método no indicado1738-12-31 – fin desconocido
- 1735VEI 2Método no indicado1735 – fin desconocido
- 1659VEI ?Observado1659-04 – 1663
- 1560VEI ?Método no indicado1560 – fin desconocido
- 1477VEI ?Método no indicado1477 – fin desconocido
- 999VEI ?Método no indicado999 – fin desconocido
- 948VEI ?Método no indicado948-12-31 – fin desconocido
- 939VEI ?Observado939-05-15 – fin desconocido
- 884VEI ?Método no indicado884-07-26 – 884-08
- 871VEI 2Observado871-05-05 – fin desconocido
- 861VEI 3Método no indicado861-05 – fin desconocido
- 857VEI ?Método no indicado857-05 – fin desconocido
- 856VEI ?Método no indicado856 – fin desconocido
- 839VEI ?Método no indicado839-10-14 – fin desconocido
- 830VEI ?Observado830-01 – fin desconocido
- 817 (±7 años)VEI ?Observado817 – fin desconocido
- 804VEI ?Método no indicado804 – 806
- 717VEI ?Método no indicado717-07 – fin desconocido
- 711 (±3 años)VEI ?Observado711 – fin desconocido
- 610 (±18 años)VEI ?Método no indicado610 – fin desconocido
- 577VEI ?Método no indicado577-12-01 – 578-07-15
- 573VEI ?Método no indicado573-03 – fin desconocido
- 450 a. C.VEI ?Estimación geológica450 a. C. – fin desconocido
- 650 a. C.VEI ?Estimación geológica650 a. C. – fin desconocidoHigashi-Chokai
- 1050 a. C.VEI 0Estimación geológica1050 a. C. – fin desconocidoWest flank (Saruana crater)
Volcanes cercanos
Enlaces externos
⚠ Solo como referencia. No apto para respuesta ante emergencias.