Giappone · Stratovulcano
Kuju Mountains
Kujusan
- Tipo
- Stratovulcano
- Altitudine
- 1791 m
- Ultima eruzione
- 1996
- Tipo
- Stratovulcano
- Paese
- Giappone
- Regione
- Pacifico occidentale / Nankai Volcanic Arc
- Altitudine
- 1791 m
- Coordinate
- 33.086, 131.249
- Ultima eruzione
- 1996
- Contesto tettonico
- Zona di subduzione / Crosta continentale (> 25 km)
- Forma vulcanica
- Composito
- Roccia principale
- Andesite / Andesite basaltica
Sintesi geologica
Kujusan is a complex of stratovolcanoes and lava domes lying NE of Aso caldera in north-central Kyushu. The group consists of 16 andesitic lava domes, five andesitic stratovolcanoes, and one basaltic cone. Activity dates back about 150,000 years. Six major andesitic-to-dacitic tephra deposits, many associated with the growth of lava domes, have been recorded during the Holocene. Eruptive activity has migrated systematically eastward during the past 5000 years. The latest magmatic activity occurred about 1600 years ago, when Kurodake lava dome at the E end of the complex was formed. The first reports of historical eruptions were in the 17th and 18th centuries, when phreatic or hydrothermal activity occurred. There are also many hot springs and hydrothermal fields. A fumarole on Hosho lava dome was the site of a sulfur mine for at least 500 years. Two geothermal power plants are in operation at Kuju.
Sintesi da Wikipedia
Riassunto in ingleseMount Kujū , located on the border of Kokonoe and Taketa in Ōita Prefecture, Japan, is a stratovolcano in Kyushu Island, Japan, with a summit elevation of 1,791 metres (5,876 ft). It is one of the 100 Famous Japanese Mountains. It is part of the Aso-Kujū National Park.
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Storia delle eruzioni
14 registrateGlossarioCronologia dettagliata
- 1995VEI 1Osservata1995-10-11 – 1996-03-24Hosho lava dome (east flank)
- 1738VEI 2Metodo non indicato1738-08-13 – fine sconosciuta
- 1675VEI 2Osservata1675-06 – fine sconosciuta
- 1662VEI 2Osservata1662-01-26 – fine sconosciuta
- 370 (±40 anni)VEI 3Stima geologica370 – fine sconosciutaKuro-dake
- 100 a.C. (±300 anni)VEI 4Stima geologica100 a.C. – fine sconosciutaKomekubo crater
- 990 a.C. (±940 anni)VEI 4Stima geologica990 a.C. – fine sconosciutaKomekubo crater
- 1720 a.C. (±300 anni)VEI ?Stima geologica1720 a.C. – fine sconosciutaTaisen-Minami
- 2440 a.C. (±300 anni)VEI 4Stima geologica2440 a.C. – fine sconosciutaDanbaru
- 3110 a.C. (±500 anni)VEI ?Stima geologica3110 a.C. – fine sconosciutaIwaigo-dake, Ogigahana, Hizengajo
- 3780 a.C. (±500 anni)VEI 4Stima geologica3780 a.C. – fine sconosciutaTaisen-Hokubu lava dome
- 4490 a.C. (±500 anni)VEI ?Stima geologica4490 a.C. – fine sconosciutaTachi-san, Gakurokuji
- 7180 a.C. (±2640 anni)VEI ?Stima geologica7180 a.C. – fine sconosciutaSensui-zan
- 9160 a.C. (±1190 anni)VEI 4Stima geologica9160 a.C. – fine sconosciuta
Vulcani nelle vicinanze
Link esterni
⚠ Solo a scopo informativo. Non adatto a situazioni di emergenza.