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Fossa Magna

earth science Maturity 7-9 Next article →

Japan has a huge area of low land. This special place is called the Fossa Magna. The name comes from Latin. It means "great crevasse." A crevasse is a deep crack in the ground. This area is very important to study. It shows us how the earth changes.

Tectonic map of southwest Japan
Tectonic map of southwest Japan

Some people think this is just a single line. They often confuse it with the Itoigawa-Shizuoka Tectonic Line. However, these two things are different. The Itoigawa-Shizuoka Tectonic Line is a line. The Fossa Magna is a much larger area. It is a great rift lowland. It covers a wide space in Japan.

Tectonic map of southwest Japan
Tectonic map of southwest Japan

A man named Heinrich Edmund Naumann gave it its name. He chose the Latin words for us. This helps scientists talk about the area. It describes the deep crack in the land. Knowing the name helps people study the earth. It connects the land to its history.

Tectonic map of southwest Japan
Tectonic map of southwest Japan

You can visit many sites in the Niigata Prefecture. The town of Itoigawa is a great place to go. It sits right above the Itoigawa-Shizuoka Tectonic Line. You can see many types of rocks there. You can also find different minerals. The Fossa Magna Museum is located in Itoigawa. It opened on April 25, 1994.

There are special parks for people to explore. The Fossa Magna Park is a geopark. A geopark is a place for learning about the earth. This park is also in Itoigawa. The area is part of the Itoigawa UNESCO Global Geopark. You can see many geological structures there. It is a wonderful place to see how the world works.

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File:Tectonic_map_of_southwest_Japan.png
Tectonic_map_of_southwest_Japan.png
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