@article{oai:nagoya.repo.nii.ac.jp:00018165, author = {中村, 俊夫 and 齊藤, 毅 and 星野, 光雄 and 桂田, 祐介 and 田中, 剛 and 吉田, 英一 and 束田, 和弘 and 太田, 友子 and Nakamura, Toshio and Saito, Takeshi and Hoshino, Mitsuo and Katsurada, Yusuke and Tanaka, Tsuyoshi and Yoshida, Eiichi and Tsukada, Kazuhiro and Ohta, Tomoko}, journal = {名古屋大学加速器質量分析計業績報告書}, month = {Mar}, note = {We have conducted a field survey on the lowermost terrace sediments along the middle Euphrates River, southeast of Raqqa, Syria. The aim of this study is to perform a chronological analysis as well as environmental surveys of the lowermost terrace deposits. We have collected two boring cores (RQ1: ca.15m long and RQ2: ca.6m long) in 2009. To setup a chronology of the cores, total organic carbon (TOC) fraction was separated from soil deposits at 11 horizons of the RQ1 and three charcoal fragment samples were collected at two horizons from the RQ2, and 14C dating was performed on the samples with an accelerator mass spectrometry (AMS) system of Nagoya University. We report here the results of AMS 14C dating on 14 samples, Which approximately showed a 14C age-range from 107±30 BP to 7600±31 BP, although 14C age of the deepest soil deposit was about 5000 BP and younger than ages at the intermediate depth of the cored sediment (ca 7600 BP)., タンデトロン加速器質量分析計業績報告}, pages = {193--200}, title = {シリア国ラッカ市近郊のユーフラテス河中流域にある最低位段丘堆積物の14C年代}, volume = {24}, year = {2013} }