Quantitative Analysis Using X-ray Fluorescence Method for Sueki
Ceramics Shards of Nishinumata Ruins, Tendo City，YAMAGATA
From ancient times to the present, pottery and ceram-
ics have been used by man in daily life. Excavated pottery
and ceramics fragments have been researched in
the fields of archaeology and natural science.In this
research, we attempted to gather date for unglazed ceramic
fragments (SUEKI) excavated from Nishinumata
ruins，Te ndo-city，Y amagata.
In the first step, archaeological dating was applied to
the determined 25 characteristics from the 41 shards
that were examined.In the second step，th e shards were
analyzed using X-ray fluorescence method. The results
suggested that the Sueki clay could be classified as four
types. Therefore, it is possible to estimate that these
samples were made from at least 4 different unglazed
ceramic ware kiln sites.
From this data，it is interesting to note that the conclusion
of multiple sites was made as a result of scientific
analyses of different clays although the shards could
be reassembled to form one piece. This shows that when
ancient people made Sueki, they selected and used different
clay on one Sueki ceramic.