HR: 0800h
AN: C21B-1092    [Abstracts]
TI: OSL Ages Of Quaternary Sediments In The Luzow-Holm Bay Region, East Antarctica, And Their Implications
AU: * Takada, M
EM: takada@cc.nara-wu.ac.jp
AF: Nara Women's University, Kita-Uoya-Nishi-machi, Nara, 6308506 Japan
AU: Miura, H
EM: miura@nipr.ac.jp
AF: National Institute of Polar Research, Kaga, Itabashi-ku, 1738515 Japan
AU: Maemoku, H
EM: maemoku@hiroshima-u.ac.jp
AF: Hiroshima University, Kagamiyama, Higashi-hiroshima, 7391733 Japan
AU: Yokoyama, Y
EM: yokoyama@eps.s.u-tokyo.ac.jp
AF: University of Tokyo, Hongo, Bunkyo-ku, 1130033 Japan
AU: Iwasaki, S
EM: s-iwasaki@nipr.ac.jp
AF: National Institute of Polar Research, Kaga, Itabashi-ku, 1738515 Japan
AB: The fluctuation of both hemisphere ice sheets during the Late Quaternary has given great impacts on global sea-level changes and climatic variations. We have been studied the stratigraphic relationship between raised beach deposits including in situ fossil shells and glacial deposits in the Lutzow-Holm Bay region, East Antarctica, clarifying the Antarctic ice sheet, unlike the northern hemisphere ice sheet, was not the greatest during the marine isotope stage (MIS) 2 but the greatest at the age older than 46 ka (e.g. Miura et al., 2004). The 46 ka is, however, close to the limit of 14C analysis and sensitive to the effect of contamination. Therefore, ages obtained by other dating methods would be of great help in interpreting those data. For this reason we investigate on optically stimulated luminescence (OSL) dates of Quaternary sediments in the Lutzow-Holm Bay region, East Antarctica, to compare OSL ages with AMS 14C dates and to discuss on late Pleistocene chronology.
DE: 0726 Ice sheets
DE: 5416 Glaciation
DE: 9310 Antarctica (4207)
DE: 9604 Cenozoic
SC: Cryosphere [C]
MN: Fall Meeting 2005