Jyo-ri System - A Land Planning in Ancient Japan - in the Vicinity of Yoshioka Town, Kurokawa Gun, Miyagi Pref., Northeastern Japan
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概要
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Mangoku-ura bay in Oshika district of Miyagi Prefecture is a very shallow bay surrounded by mountains. The area can be divided into two parts: the part along the Oshika Peninsula and the one along the coast opposit to the Peninsula extending from Watanoha at the mouth of the bay to Onagawa. There are some sites, Yashikihama, Kuroshima, Harinohama, etc., along the former coast, but only one site, Urajuku, along the latter.At Yashikihama site a pretty amount of potshards of the Middle Jomon type are found scattered along the steep slope of a hill, but other than potshards few remains have been discovered. Remains similar to the Middle Jomon in type are found at some places in the vicinity, e. g. Harinohama, Onagawa and Oura in Momoo district.From Karamatsu and Kuroshima sites are found not only potshards of the Jomon type but also fragments of Iwaibe- and Haji-pottery.Urajuku site near Onagawa is a shellmound, and remains are very abundant in kinds as well as in amounts. Pottery is of the Latest Jomon type. From the site were found more than thirty fishing implements made of bone or horn, most of which were harpoons. The remains of this site strikingly resemble those from Numazu shellmound of Inai village in Oshika district. In those days Numazu site presumably stood by an inlet open to the Pacific, and many fishing implements from this site as well as Urajuku site show an active performance of fishing.In short in the vicinity of Mangoku-ura, there existed a Middle Jomon culture along the coast of Oshika Peninsula, a Late Jomon culture at Takaki and Kitasakai, and a Latest Jomon culture at Urajuku and Numazu. As the coast-line drew back the culture characterized by Iwaibe- and Haji-potetry appeared in Ishinomaki district and also along the coast of Mangoku-ura bay.In Ishinomaki there are few remains of the Jomon period but a site on a hill named Hagurosan which is close by the Kitakami river, contains shards of Haji-pottery. The center of sites of Iwaibe- and Haji-pottery lies presumably in the northwest of Ishinomaki and the remains are found from whole region covering Waniyama and Hagurosan.
- Faculty of Science, Tohoku Universityの論文
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