東北・北海道における古墳時代中・後期土器様式の編年

抄録

This paper approaches the temporal change in ceramic assemblages in different regions of northern and northeastern Japan, based on a typological framework applied to a broad geographical are a stretching from Hokkaido to the Tohoku region. Ceramic typologies in Japan have tended thus far to be regionally compartmentalized, impeding an understanding of interaction among different regions as reflected in ceramic assemblages.
In southern Tohoku, individual serving vessels were adopted in the early fifth century, as evidenced by the appearance of pedestalled bowls. In the late fifth century, earthen cooking stoves were adopted, which also resulted in a change in the ceramic assemblage. This change was associated with one in the Kinai region where the central political authority was located. On the other hand, whereas Epi-Jomon pottery was still dominant in the ceramic assemblages of northern Tohoku and Hokkaido, specific functional types of haji and sue wares commonly used in central Japan were transported into these regions as prestige goods.
As a general trend, from the mid sixth to the early seventh centuries, haji bowls came to be modelled after sue shapes then in use. Southern Tohoku was part of this tendency. In the mid sixth century in northern Tohoku, and in the late sixth and early seventh centuries in central and southern Hokkaido, ceramic assemblages typical of southern Tohoku and other parts of Japan were incorporated into local assemblages. Local assemblages in the former regions were distinguished from those of southern Tohoku, however, in that storage jars comprised a higher ratio in the assemblage and the bowls were larger.