Sasayama shell mound

Sasayama shell mound (December, 2011)

Sasayama shell mound (しのやまかいづか) is a shell mound of the Jomon period in Tochigi-shi Fujioka, Fujioka-machi, Tochigi-shi. I am located the former Watarase River left bank, the existing Watarase River right bank, the west of the Wataze flood prevention reservoir. It is Fujiokacho designated historic spot, and Tochigi and Meiji University find you.

Table of contents

Summary

The Sasayama shell mound exists at the former Watarase River left bank, the position facing the existing Watarase flood prevention reservoir. Tokyo Bay gets by a rise in water level called the transgression to current Koga-shi in Jomon period, Jomon, and it is thought that seawater was it at the time of the high tide in in front of shell mound. I call it old Tokyo Bay, but this shell mound is famous as Kaizuka in the most interior.

Originally the shell mound is a big horseshoe shape reaching north and south 100m, East-West 70m, and a fresh water-related shellfish of the Corbicula japonica is the center, but the oceanic climate shellfishs such as persimmon turban shells are seen, too. The earthenware vessel is Sekiyama expression in the first half year. The bone of a large quantity of deer and wild boars is found, and the a bone and a horn device such as needle, ヤス which would be made using it again is found. Furthermore, the bracelet made of shellfish is found in this shell mound. However, there is little discovery such as stone implements made of volcanic glass seen well at this time.

Present situation

The embankment of the Watarase flood prevention reservoir approaches in front. For the construction of the embankment with the river improvement work, these remains were destroyed. At the same time, the prefecture designated historic spot was canceled, too. Although I was destroyed, the above-mentioned shell mound is half still left, and a large quantity of shellfishs are seen on the surface of the earth.

Allied item

• List of remains of the Jomon period
• List of shell mounds of Japan

Outside link

• Sasayama shell mound - jalan tour guide
• In quest of land razor shell mound (PDF) and - Iwajuku museum

Coordinate: 36°14'N 21.8 seconds 139°39'E 16.3 seconds

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