@article{oai:nagoya.repo.nii.ac.jp:00011715,
 author = {藤根, 久 and Fujine, Hisashi and Zauri, Lomtatidze and 丹生, 越子 and Niu, Etsuko and 中村, 俊夫 and Nakamura, Toshio},
 journal = {名古屋大学加速器質量分析計業績報告書},
 month = {Mar},
 note = {We dated a kind of pottery called S-type Haji ware (S-jijou-kouen-daituki-kame), footed pot with S-shaped section on the rim. We try to determine the origin of clay by dating of middle part of S-type Haji ware. The Haji ware is low fired brown pottery made in Kofun period (A.D.300-AD.700) and this type of footed pot was a typical item of the Tokai district (central Japan). We dated the S-type Haji ware (Fig.2), which was excavated from the clay pit in Hashienakajuku site (Hashie, Isesaki, Gunma Prefecture). About 66 clay pits was investigated in this area, size of these clay pits are about 2×1.5m and depth are about 2-2.5m, pits section presents a U-shaped and a bag-shaped. From the section observation of the pits it seems that the clay for the pottery was collected from the black and dark-brown organic clay layer under Aira-Tn volcanic ash layer (AT) to Haruna-Hatsusaki tephra layer(Hr-HP). Many S-type Haji ware was collected from clay pits and the characteristics of the pottery material identified with characteristics of the clay from these pits. So it was estimated that clay from these clay pits was used for production of the S-type Haji ware. Archaeological expected date of these S-type Haji ware are A.D.300-A.D.400. The clay dating results agree with expected date but black middle part of S-type Haji ware gives a younger date, showing that old carbon from clay included younger carbon from temper. The attached soot dating results (of the S-type Haji ware no.D,no.E,no.F,no.G) agree with archaeological expected date. But black inner part of S-type Haji ware (no.C) gives an older date, showing that younger carbon was contaminated with older carbon from S-type Haji ware. This study shows that these S-type Haji ware made from old clay and tephra materials (from these pit), may be included the organic temper., タンデトロン加速器質量分析計業績報告 Summaries of Researches Using AMS 2002 (平成14)年度},
 pages = {208--216},
 title = {S字状口縁台付甕のAMS年代測定とその意味(タンデトロン加速器質量分析計業績報告2002(平成14)年度)},
 volume = {14},
 year = {2003}
}