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The fourth eruption (Aso 4) was the largest, with volcanic ash covering the entire Kyushu region and even extending to Yamaguchi Prefecture. Mt. Taka, Mt. Naka, Mt. Eboshi, and Mt. Kishima are cones formed following the fourth above-mentioned huge caldera eruption. Mt. Naka remains active today.
Aso caldera (also known as Asosan, the Aso Volcano or Mount Aso, although the later term usually is used related to its currently active vents) is a geographical feature of Kumamoto Prefecture, Japan. It stretches 25 kilometers north to south and 18 kilometers east to west.
There are three VEI-7 volcanoes in Japan. These are the Aira Caldera, Kikai Caldera and Aso Caldera. Mount Aso is the largest active volcano in Japan. Mount Aso had four eruptions 300,000 to 90,000 years ago. It emitted huge amounts of volcanic ash that covered all of Kyushu and up to Yamaguchi Prefecture.
It erupts basaltic lava and is one of the few permanently active volcanoes in the world, sometimes with a small lava lake present in its summit crater. ... Mount Aso. Japan Elevation: 5,223 feet.
35.3 [4] Nu-p 6 Menengai: Great Rift Valley, Kenya: 26.1 35.6 Menengai Tuff 6 Towada Honshū: 46 36 eruption episode N 6 Lake Mashū Hokkaidō: 10 38.3 [4] Nu-r 7 Gorely: Kamchatka 120 39 Southern sea cliffs 7 Kussharo: Hokkaidō: 170 39.3 Kp-1, Kutcharo Shoro Ash 7 Phlegraean Fields: Campanian volcanic arc: 430 - 680 39.9 Campanian Ignimbrite ...
[4] [43] Mount Aso (size: 24 km wide), island of Kyūshū, Japan; 120 ka; 80 km 3 (19 cu mi) of tephra. [4] Mount Aso (size: 24 km wide), island of Kyūshū, Japan; 140 ka; 80 km 3 (19 cu mi) of tephra. [4] Puy de Sancy, Massif Central, central France; it is part of an ancient stratovolcano which has been inactive for about 220,000 years.
The nature of eruption is disputed. Paraná Province suggests an effusive origin from local sources. [6] [7] No ashfall deposits have been found, and the erupted volume could be 2-3 times larger than listed if any ashfall deposits are found. [4] [4] Ourinhos—Khoraseb ~132 Paraná and Etendeka traps 3,900: The nature of eruption is disputed.
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