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Cenozoic glaciogenic sedimentary record in the Grove Mountains of East Antarctica

Published online by Cambridge University Press:  06 June 2005

AIMIN FANG ,
XIAOHAN LIU ,
XIAOLI LI ,
FEIXIN HUANG  and
LIANGJUN YU
AIMIN FANG
Affiliation:
Institute of Geology and Geophysics, Chinese Academy of Science, Beijing 100029, China
XIAOHAN LIU
Affiliation:
Institute of Tibet Research, Chinese Academy of Science, Beijing 100029, China
XIAOLI LI
Affiliation:
Institute of Geology and Geophysics, Chinese Academy of Science, Beijing 100029, China
FEIXIN HUANG
Affiliation:
Institute of Geology and Geophysics, Chinese Academy of Science, Beijing 100029, China
LIANGJUN YU
Affiliation:
Institute of Geology and Geophysics, Chinese Academy of Science, Beijing 100029, China
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Abstract

During fieldwork of the 1998–99 and 1999–2000 Chinese National Antarctic Research Expedition (CHINARE), three different kinds of Cenozoic sedimentary record were found in the Grove Mountains, which are in East Antarctica about 450km inland of Prydz Bay. These consist of (1) glaciogenic sedimentary erratics found in the moraine banks in the central area of Grove Mountains, which can be subdivided into four types according to different degrees of lithification as well as differences in inner structure and include in-situ diamicts; (2) palaeosols found in several small depressions in the southern slope of the Mount Harding; and (3) different kinds of glacial moraine floating on the surface of blue ice or around the foot of some nunataks. Preliminary results suggest that the in situ glaciogenic sediments were formed in the ice-sheet frontal area by the interaction of glacial movement and ice sheet melt water under climatic conditions warmer than today.

Keywords

erratic boulderLambert GlaciermorainepalaeosolPrydz Bay
Type
Research Article
Information
Antarctic Science , Volume 17 , Issue 2 , June 2005 , pp. 237 - 240
Copyright
© Antarctic Science Ltd 2005

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