Novi AMS datumi iz sub-neolitskih najdišč na območju južnega dela reke Bug (Ukrajina) in težave s kronologijo kulture Bug-Dnester

Ideas about the origin of the Buh-Dnister Culture under the influence of the Danube Early Neolithic were questioned by series of radiocarbon dates falling into the second half of the 7th millennium BC measured on bones at the Kyiv laboratory in 1998–2004. To start addressing this problem, 11 AMS dates on organic inclusions in the ceramic paste and charred residues on the surface of vessels were obtained at the Tokyo University laboratory. Apart from two heavily overestimated values, measured on samples with very low carbon content, they fall into the range of the 60th–46th century BC that correspond better to the primary views of this chronology. However, the issues of the time and direction of spreading of the first pottery in the region need further research.Zaradi vrste radiokarbonskih datumov, ki sodijo v čas druge polovice 7. tisočletja pr. n. št. in so jih izmerili na kosteh v Kijevskem laboratoriju med leti 1998 do 2004, smo podvomili v zamisli o izvoru kulture Bug – Dnester pod vplivom Donavskega zgodnjega neolitika. Da bi lahko razrešili to vprašanje, smo v univerzitetnem laboratoriju v Tokiju pridobili 11 AMS datumov iz organskih vključkov v lončarskih masah in zoglenelih organskih ostankov na površinah posod. Razen dveh izredno precenjenih vrednosti, ki smo jih izmerili na vzorcih z nizko vsebnostjo ogljika, padejo datumi v razpon od 60. do 46. stoletja pr. n. št., kar je bolj v skladu s prvotnimi stališči o tej kronologiji. Ne glede na te rezultate pa bo potrebno čas in smer širitve prve lončenine v tej regiji še dodatno preučiti

An Analysis of Carbonized Rice Grains Excavated from the Iwasaki Site in Fukuoka Pref.

東京大学考古学研究室は、福岡県八女市岩崎から出土した炭化米を所蔵している。この炭化米は、大正12 年に中山平次郎が採集して本研究室に寄贈したものである。本稿ではこの炭化米の植物形態学的研究と放射性炭素年代測定、炭素・窒素同位体比分析をおこなった。その結果、これらはほとんどが短粒の小型米という弥生後期以前の形態である可能性が示唆され、年代測定の結果と整合性を示し、中山の見通しの正しさが検証された。また、水稲である可能性が示唆された。The archaeology laboratory of the University of Tokyo possesses carbonized rice grains excavated from Iwasaki, Yame-shi, Fukuoka pref. This carbonized rice was collected by Heijirou Nakayama in 1923 and subsequently donated to the laboratory. In the following paper, a plant-ecological examination of these materials, together with a carbon-14 dating will be conducted in addition to a comparative analysis of carbon and nitrogen isotopes. The results of this paper indicate the possibility that almost all of the carbonized rice grains belong to a type of small, short-grain rice dating from before the late Yayoi period. The consistency of these findings in relation to the results of the carbon-14 dating is used to examine the validity of Nakayama\u27s predictions. Moreover, the possibility that these carbonized rice grains may have been a variation of wet rice is also suggested

Chronological research of environmental change and human activity in the late Jomon periods in eastern Japan

University of Tokyo (東京大学

Pre-Bomb Marine Reservoir Ages in the Western Pacific

From the 20th International Radiocarbon Conference held in Kona, Hawaii, USA, May 31-June 3, 2009.In this study, molluscan shells housed at the University Museum, the University of Tokyo, provided a new set of region-specific correction values (R) for the western Pacific, in particular for the central part of the main islands in the Japanese Archipelago and the southwest islands of Japan. The values of 40 total samples were calculated from 11 regions. North of the main islands and in the Ryukyu Islands, the mean R values showed comparatively small values, 5-40 14C yr; in the central part of the main islands, these values were 60-90 14C yr.The Radiocarbon archives are made available by Radiocarbon and the University of Arizona Libraries. Contact [email protected] for further information.Migrated from OJS platform February 202