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Quaternary Volcanoes of Japan - Geological Survey of Japan; Volcano on Google Map - Geological Survey of Japan; The National Catalogue of the Active Volcanoes in Japan - Japan Meteorological Agency; 日本の主な山岳標高 (Elevation of Principal Mountains in Japan) - Geospatial Information Authority of Japan (in Japanese)
Mount Katmai (Russian: Катмай) is a large active stratovolcano (composite volcano) on the Alaska Peninsula in southern Alaska, located within Katmai National Park and Preserve. It is about 6.3 miles (10 km) in diameter with a central lake-filled caldera about two by three miles (3.2 by 4.8 km) in size, formed during the Novarupta eruption ...
In 2015, researchers found that the volcano's structure bore patterns of magnetic striping on either side, indicating that the volcano is likely a hybrid of a mid-ocean ridge and a shield volcano. Geologic data also indicated that Tamu Massif formed at the junction of three mid-ocean ridges, which was a highly unusual occurrence.
Then, they found a new volcano-like formation deep in the ocean waters. The new volcano-like structure sits more than 1,600 meters from the water's surface. So, it's far too deep to pose a danger ...
Mount Rishiri (利尻山, Rishiri-zan) is a Quaternary [2] stratovolcano located off the coast of Hokkaidō, Japan in the Sea of Japan. It rises out of the Sea of Japan forming Rishiri Island. Because its cone shape resembles Mount Fuji it is sometimes referred to as Rishiri Fuji. It is one of the 100 famous mountains in Japan.
Kaimondake (開聞岳, Kaimon-dake), or Mount Kaimon, is an undissected [i] volcano – consisting of a basal stratovolcano and a small complex central lava dome [2] – which rises to a height of 924 metres above sea level near the city of Ibusuki in southern Kyūshū, Japan. The last eruption occurred in the year 885 CE.
Pyroclastic flows descended the slopes of the volcano and crossed the sea to Unalaska Island. [103] The mountain was probably snow- and ice-covered at the time, and pyroclastic flows melted the ice to form mudflows. [104] Caldera collapse occurred only late in the sequence, [103] and a debris avalanche formed on the northwestern flank. [105]
The top of the volcano is 1,370 metres (4,490 ft) above sea level. The volcanic cone is some 8 kilometres (5.0 mi) in diameter. There are three explosion craters at the summit. At Kitanakahara (北中腹) at about 800 metres (2,600 ft), there is a fumarole. [1] The volcano is made mostly from non-alkali mafic volcanic rock.