@article{oai:nagoya.repo.nii.ac.jp:00011834, author = {松井, 章 and Matsui, Akira}, journal = {名古屋大学加速器質量分析計業績報告書}, month = {Mar}, note = {I am taking part in the excavation of Higashimyo site that is the wetland shellmiddens in Saga Prefecture, Kyushu Island since 2003. It was 7-8 meters below the modern ground surface and -0.5 meters below the sea level at the lowest part. It is located 28 km from the Coast of Ariake Sea. Saga Municipal Government revealed the alluvial plain as wide as 500,000 square meters for digging a reservoir and found 6 shellmiddens along the former river bank slope. There have been found more than 400 baskets or woven bags in the shellmidden No. 2, where only 30 % has been excavated. AMS dating indicates that they were 7040±130 BP.(Cal.) from charcoal and 6976±36bp.(Cal. BC 5891-5790) from the basket's fragment. All six shellmiddens contain the same type of the late Initial Jomon phase in Kyushu, that is Senokan-shiki (type) pottery and only upper layers contain Todoroki B-shiki. It will be measured that the actual absolute period of a type of Jomon pottery according to the results of the dating between the bottom layer and the upper layer that contain Senokan-shiki by AMS dating. The surface of these shellmiddens was covered with fine clay that was formed by tidal and river sedimentation. Owing to the Jomon Transgression and retreatment of the sea, which occurred eustatic event at that time, this site had been buried in the alluvial plain. This event makes it easy to compare this Initial Jomon site with other sites in other Japan islands or even Eastern Asia on the same horizon. That is the reason why so many plant remains have been preserved in good condition., 第19回名古屋大学年代測定総合研究センターシンポジウム平成18(2006)年度報告<第2部> Proceedings of the 19th symposiumon on Chronological Studies at the Nagoya University Center for Chronological Research\ in 2006 日時:平成19 (2007)年1月15日(月)~17日(水) 会場:名古屋大学シンポジオン Date:January15th-17th, 2007 Venue:Nagoya Uhiversity Symposion Hall}, pages = {144--147}, title = {佐賀市東名遺跡の年代とその問題点(第19回名古屋大学年代測定総合研究センターシンポジウム平成18(2006)年度報告,第2部)}, volume = {18}, year = {2007} }