Final Phase Burial Mounds in the Kibi Region

1.冈山大学考古系从1990年开始对冈山县北保町萨达的7世纪墓葬进行了挖掘和调查。该项目的目的是建立木比地区最后古坟时期的时间框架，并展示木比地区的地方权力在日本政治等级重组过程中的作用。这项助学金的研究是Sada项目的一部分。在Sada项目中出土了Sadakita Kofun， Sada higaszuka Kofun和Sada Nishizuka Kofun。在这个项目之前，Sadakita Kofun几乎不为人知，Sada higaszuka和Nishizuka被误认为是一个钥匙孔形状的人。在这个项目的过程中，我们揭示了这些土丘的精确形状，并得出结论，这些方形土丘都是典型的末相土丘。这些墓葬冢的棺材和陪葬品经过仔细比较，并于1995年发表了田田古坟的发掘报告5.3。Kibi地区最后阶段墓丘的年代序列和日期通常在北保町地区确定。顺序为：东冢古坟、西冢古坟、田田古坟、大屋一号古坟。所有这些都是在公元7世纪相继建造的。在Miyori， kione -son， Okayama-ken和Hokubo-cho地区，对同一时期的群集墓地进行了测绘。利用地理信息系统（GIS）对三依县的分布图进行可视化处理，并在internet -net上发布。对基奈地区最后阶段墓丘的年表进行了重新检查，并发表了新的年表。下一步是对六世纪前土墩年表的重新检查。虽然已经建立了一个框架，但细节将在稍后公布。

1.A project of excavating and surveying 7th century burial mounds at Sada, Hokubo-cho, Okayama-ken has been carried out from 1990 by the Department of Archaeology, Okayama University. The purpose of the project is to establish chronological framework of the final Kofun period in the Kibi region and to show the role of the local power of Kibi in the course of the re-organization of political hierarchy in Japan. The research of this Grant-in Aid is a part of this Sada Project.2.Sadakita Kofun, Sada Higashizuka Kofun and Sada Nishizuka Kofun have been excavated in Sada Project. Before the project, Sadakita Kofun had been almost unknown and Sada Higashizuka and Nishizuka had been mistaken as a keyhole shaped one. Through the course of this project, we revealed the accurate shape of these mounds and concluded that all of these square-shaped mounds were typical ones of final phase burial mounds. Coffins and grave goods of these burial mounds are carefully compared and the excavation report of Sadakita Kofun was published in 1995.3.Chronological series and dates of final phase burial mounds in the Kibi region has been established typically in the Hokubo-cho region. The order is : Sada Higashizuka Kofun, Sada Nishizuka Kofun, Sadakita Kofun and Oya No.1 Kofun. All were constructed successively in the 7th century AD.4.Mapping of the clustered burial mounds of the same period has been carried out at Miyori, Kiyone-son, Okayama-ken and in the Hokubo-cho region. Distribution map of Miyori was visualized by the Geographic Information System (GIS) and published on Inter-net.5.Chronology of the final phase burial mounds in the Kinai region has been reexamined and new chronology was publihshed. Next step was the reexamination of the chronology of preceding 6th century mounds. Although a framework was already established, details will be published later.