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Itoigawa is also famous for its jade which can be found on local beaches. Itoigawa also lends its name to the Itoigawa-Shizuoka Tectonic Line, a major fault that runs from Itoigawa, through Lake Suwa to the city of Shizuoka in Shizuoka Prefecture, forming the western border of the Fossa Magna.
Jade beads made at this site have been found throughout the Hokuriku region and into the Chubu and Kantō regions of Japan. [2] The Jōmon pottery found at the site has a distinctive pattern, and is styled by archaeologists as "Chōjagahara-style pottery". Earthenware in the form of clay figurines and human-faced / beast-faced handles have also ...
The Matsumoto Kaidō was a steep mountain trail following the Himekawa River valley, about 120 kilometers in length, and has been in existence since very ancient times, as evidenced by Jōmon period jade beads and jadeite stone axes produced in the Itoigawa area found at archaeological sites in the Kantō region of Japan.
Terachi Site (寺地遺跡, Terachi Iseki) is an archaeological site containing the traces of a middle to late Jōmon period settlement located in the Teraji neighborhood of the city of Itoigawa, Niigata in the Hokuriku region of Japan. The site was designated a National Historic Site of Japan in 1980. [1]
Jade and talc examples produced in bead-making villages located in present-day Itoigawa, Niigata have been found at a large number of sites along the northern coast, in the central mountains, and in Kantō region. [5]: 30
Jadeite is the principal mineral making up the most valuable form of jade, a precious stone particularly prized in China. Most gem-quality jadeite jade comes from northern Myanmar. Jade tools and implements have been found at Stone Age sites, showing that the mineral has been prized by humans since before the beginning of written history.
[3] [4] The MTL begins near Ibaraki Prefecture, where it connects with the Itoigawa-Shizuoka Tectonic Line (ISTL) and the Fossa Magna. It runs parallel to Japan's volcanic arc, passing through central Honshū to near Nagoya, through Mikawa Bay , then through the Inland Sea from the Kii Channel and Naruto Strait to Shikoku along the Sadamisaki ...
Itoigawa-Shizuoka Tectonic Line (ISTL) (糸魚川静岡構造線, Itoigawa Shizuoka Kōzō Sen), also Ito Shizu Sen (糸静線) is a major fault zone on Honshu island running from Itoigawa, Niigata Prefecture, through Lake Suwa, and on to Shizuoka in Shizuoka Prefecture.