Q:

How was Mount Fuji formed?

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Quick Answer

Mount Fuji, the tallest mountain in Japan, was formed by a series of volcanic eruptions that occurred over approximately the last 100,000 years. Geologists identified four major stages of volcanic eruption in Mount Fuji's formation process. These stages deposited layers of basalt and andesite rock in the mountain. The volcano is still active, with the most recent eruption occurring in 1707.

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How was Mount Fuji formed?
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The deepest layers of Mount Fuji were formed by several old volcanoes called Komitake and Ko-Fuji. These volcanoes were active until approximately 10,000 years ago. The shapes of the two underlying volcanoes contribute to the irregularity of the volcano's present shape. Komitake and Ko-Fuji became inactive when large lava flows began to emerge from the presently active volcano. This volcano, known as New Fuji, deposited a large amount of basalt rock over the old volcanoes.

Most of the eruptions occurred between 3,000 and 4,500 years ago. Fuji's last eruption in 1707 was the largest in history, and it took place at the volcano's summit. More than 100 smaller cone volcanoes are found on the mountain's flanks, but these are considerably less active. There was concern beginning in 2000 that the volcano at Mount Fuji was awakening and would erupt again, but a 21st century eruption has yet to occur.

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Related Questions

  • Q:

    What are some facts about Mount Fuji?

    A:

    Mount Fuji is located on Honshu Island in Japan. The origin of the volcano's name is somewhat disputed. It is thought to either be a reference to Fuchi, a Buddist fire goddess, or to mean "everlasting life" in the aboriginal Ainu language. The first recorded ascent of Mount Fuji was accomplished by a monk in 663.

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  • Q:

    Where is Mt. Fuji located?

    A:

    Mount Fuji is located in Japan, on Honshu Island. It is about 60 miles southwest of Tokyo, where it can be seen on a clear day. The active stratovolcano is the highest mountain in Japan, with a height of 12,389 feet.

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  • Q:

    What is the elevation of Mount Fuji?

    A:

    The elevation of Mount Fuji is 12,380 feet. Located just over 60 miles from Tokyo, Mount Fuji is the tallest mountain in Japan and is an active volcano. The top of the mountain has a tundra climate.

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  • Q:

    What kind of volcano is Mount Fuji?

    A:

    Mount Fuji is a classic cinder cone, built up by a stratovolcano. The mountain is notable for its symmetrical cone-shaped profile, which is characteristic of stratovolcanoes that have not erupted laterally. Oregon State University notes that Mount Fuji has erupted over 16 times.

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