@article{oai:nagoya.repo.nii.ac.jp:00011673,
 author = {五十嵐, 厚夫 and Igarashi, Atsuo and 三浦, 英樹 and Miura, Hideki},
 journal = {名古屋大学加速器質量分析計業績報告書},
 month = {Mar},
 note = {Age determination of marine deposits (elevated marine deposits on land and marine sediment cores from sea and lake floors) distributed in the Lutzow-Holm Bay region, East Antarctica, has been numerously performed through the Japanese Antarctic Research Expeditions since 1957,by using geochronology of carbon-14,electron spin resonance, thermoluminescence, and amino acid epimerization and biochronology of fossil mollusca and ostracoda. The purpose of the datings is to provide better chronological knowledge essential for revealing ice sheet fluctuation history and coastal paleoenvironments in this region. Chronological control of elevated marine deposits exposed in several ice-free areas along the eastern shore of Lutzow-Holm Bay has largely relied upon Accelerator Mass Spectrometry (AMS) carbon-14 dates obtained from calcareous fossil marine organisms ; the dates cluster into two categories of 2-8ka (Holocene) and 30-46ka (latest Pleistocene). Amino acid epimerization geochronology of fossil mollusca and biochronology of fossi ostracoda, however, suggest potential existence of pre-Quaternary marine fossils in the deposits and further subdivision of carbon-14 dates of 30-46ka into two separated age categories. These findings of considerably old marine fossils require re-examination of chronology of elevated marine deposits producing fossils of 30-46ka in carbon-14 age. Chronostratigraphy of marine gravity and piston cores collected from sea floor in Lutzow-Holm Bay has solely assembled by AMS carbon-14 dates produced from sedimentary organic carbon. The obtained dates were less than 16ka ; submarine sediments correlative to elevated marine deposits whose ages exceed the Last Glacial Maximum (LGM) have not yet been recovered from the sea floor. Detailed stratigraphic correlation among submarine cores and Holocene elevated marine deposits is difficult due to the indefinite reservoir correction value for marine organic matter and to upward-increasing abnormal ages for some cores. Recovery of continuous and long time-ranged submarine sediment cores far exceeding th LGM is a priority for future stratigraphic and chronological research of marine deposits in this region., 第14回名古屋大学タンデトロン加速器質量分析計シンポジウム(平成13 (2001)年度)報告},
 pages = {118--133},
 title = {東南極リュツォ・ホルム湾に分布する海成堆積物の年代に関するこれまでの成果と問題点},
 volume = {13},
 year = {2002}
}