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Haruna volcano

stratovolcano 1449 m / 4,754 ft
Honshu, Japan, 36.47°N / 138.88°E
Current status: dormant (1 out of 5)
Typical eruption style: explosive
Haruna volcano eruptions: around 550 AD, 520 AD, 450 AD
TimeMag. / DepthDistanceLocation
Mon, 25 Jan
Mon, 25 Jan 04:40 UTCM 2.8 / 275.5 km14 kmSE GUNMA PREF
Thu, 24 Dec
Thu, 24 Dec 18:39 UTCM 2.7 / 160.1 km7 kmNW GUNMA PREF
Mon, 21 Dec
Mon, 21 Dec 08:00 UTCM 2.6 / 12.8 km14 kmTOCHIGI GUNMA BORDER
Haruna volcano a stratovolcano located in central Honshu, 110 km NW of Tokyo. The volcano contains a small summit caldera with a symmetrical post-caldera cone (Haruna Fuji) and Lake Haruna in the western side of the caldera.
The most recent eruptions, dated to the 6th century AD, were 2 large explosive eruptions from the Futatsu-dake lava dome in the eastern part of the caldera.

Background:

Haruna-san volcano forms the older part of the volcanic edifice and dates back more than 300,000 years ago. It had large plinian eruptions about 200,000 and 40,000 years ago, that were followed by caldera formation.
Viscous lava flows and lava domes formed afterwards within and around the caldera.


 

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