Study on Production Characteristics and Change in Production Location of Pottery Excavated from DongOe-dong Site in Goseong

Abstract

As a result of scientific analysis of 26 pottery excavated from the DongOe-dong site in Goseong, pottery with various firing degrees was confirmed, ranging from low-firing pottery with mica minerals detected to high-firing pottery with high-temperature minerals such as cristobalite and mullite detected. In addition, low-firing pottery has an absorption rate of 9.7∼25.8% and generally shows high saturation value. On the other hand, high-firing pottery has low absorption rate and saturation value, so the physical characteristics of the pottery show a high correlation with the group classified by XRD analysis. Pottery with a low firing degree commonly contains fine-grained mineral particles and has a similar composition of trace elements such as Rb, Ba, and Sr. And they were most abundantly excavated from the No. 1-1 moat. However it was confirmed that there is a difference in the production area because compositions of the rare earth elements are distributed in two areas in the graph. High&intermediate-firing pottery samples are observed to have a vitrified base matrix and relatively less temper minerals. And their contents of Rb, Sr, and Ba are significantly different from low-firing pottery. In the composition of rare earth elements, they are all distributed in same area as one of the separated areas of low-firing pottery, so it is highly likely these pottery were produced in the same or nearby production region regardless of the firing degree. As a result of checking up the composition of rare earth elements according to the archaeological chronology of pottery, it is estimated that there was a change in the production region of the pottery introduced into the DongOe-dong site around 250 AD.