@article{oai:nipr.repo.nii.ac.jp:00010150,
 author = {Altmaier, Marcus and Herpers, Ulrich and Delisle, Georg and Merchel, Silke and Ott, Ulrich and Altmaier, Marcus and Herpers, Ulrich and Delisle, Georg and Merchel, Silke and Ott, Ulrich},
 issue = {1},
 journal = {Polar science, Polar science},
 month = {May},
 note = {We present for the first time rock exposure ages primarily for the Wohlthat Massiv/Queen Maud Land, Antarctica, determined from 54 quartz rich samples via in-situ produced^<10>Be (T_<1/2> = 1.51 Ma) and 26Al (T_<1/2> = 0.7 Ma) using accelerator mass spectrometry (AMS). Measured radionuclide concentrations vary from extremely low values up to saturation. For a scenario with extremely low erosion and minimal tectonic uplift ^<10>Be and ^<26>Al surface exposure ages are generally in good agreement. Long exposure ages up to >8 Ma were confirmed by measurement of stable ^<21>Ne using noble gas mass spectrometry.Our data suggest that the regional highest mountain peaks had risen above the ice surface at least 1-4 Ma ago. Notwithstanding a 200-400 m higher ice sheet elevation persisted in the Wohlthat Massiv/Queen Maud Land until about 0.5 Ma ago. In our interpretation, the successive thinning of the ice sheet was probably in response to global cooling and less annual precipitation since the Pliocene. Our results are in line with published ice sheet modelling results predicting only modest changes in ice thickness in Queen Maud Land during the "warmer" Pliocene and during the transition to the "cooler" present. Low-level changes occurred during the last glacial maximum, but only affected the region located close to the present shelf ice. As the extremely low erosion rates (<5 cm Ma^<-1>) inferred for several samples can only exist under extremely cold and hyperarid conditions, we exclude a scenario featuring a prolonged period with warm and humid climatic conditions within the last 8 Ma. Our data do not support the notion of a temporary large scale retreat of the East Antarctic ice sheet during a suspected warming episode in the Pliocene., 南極、クイーンモードランドのWohlthat 山地において、石英に富む54個の岩石試料を採取し、その中の原位置宇宙線生成核種10Be、26Alおよび21Neの測定によって、この地域の岩盤の表面露出年代をはじめて決定した。結果は、“温暖な” 鮮新世の期間と“寒冷な” 現在への移行期間においてクイーンモードランドにおける氷厚の変化は穏やかであったとする氷床変化モデルの考え方に一致する。サンプルから推定された非常に低い侵食速度（100万年で5cm以下）は、極めて寒冷、あるいは非常に乾燥した氷床底面環境の下に限られるものなので、過去800万年間、温暖で湿潤な気候環境が長く継続したとするシナリオは考えられない。したがって、このデータは、鮮新世の温暖期に東南極氷床が一時的に大規模に後退したとする立場の見解を支持しない。},
 pages = {42--61},
 title = {Glaciation history of Queen Maud Land (Antarctica) reconstructed from in-situ produced cosmogenic ^<10>Be, ^<26>Al and ^<21>Ne},
 volume = {4},
 year = {2010}
}