Hachimantai
Stratovolkan · Japan · 1613 m
- Tipe
- Stratovolkan
- Negara
- Japan
- Wilayah
- Northwestern Pacific Volcanic Regions / Northeast Japan Volcanic Arc
- Ketinggian
- 1613 m
- Koordinat
- 39.958, 140.854
- Letusan terakhir
- -5350
- Kondisi tektonik
- Subduction zone / Continental crust (> 25 km)
- Bentuk lahan
- Composite
- Batuan utama
- Andesite / Basaltic Andesite
Ringkasan geologi
Hachimantai was constructed from widely scattered vents during the Pleistocene and is capped with andesitic lavas from vents in the center of the complex. The summit forms an undulating plateau surrounded by steep slopes. Circular craters are located near Komonomore and Mokkodake in the center of the plateau. The craters are youthful looking, but have not been dated. Hayakawa (1996, pers. comm.) considered Hachimantai to be of possible Holocene age. No historical eruptions have been recorded, but active solfataras are found on the western and southern flanks.
Ringkasan Wikipedia
Ringkasan InggrisMount Hachimantai is the highest peak of a group of stratovolcanos distributed around the Hachimantai plateau in the Ōu Mountains in northern Honshū, Japan. This volcanic plateau is part of the Nasu Volcanic Zone and straddles the border between the Iwate Prefecture and Akita Prefecture. The volcano is listed as one of the 100 Famous Japanese Mountains, and forms part of the Towada-Hachimantai National Park.
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Riwayat letusan
Garis waktu rinci
- 5350 SMVEI ?Perkiraan geologiBCE 5350 – Berlangsung
- 7900 SM (±150 tahun)VEI ?Perkiraan geologiBCE 7900 – Berlangsung
Tautan eksternal
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