Cenozoic terrestrial palynological assemblages in the glacial erratics from the Grove Mountains, east Antarctica

doi:10.1016/j.pnsc.2008.01.040

	Cenozoic terrestrial palynological assemblages in the glacial erratics from the Grove Mountains, east Antarctica
	Fang, Aimin 1; Liu, Xiaohan 2; Wang, Weiming 3; Huang, Feixin 2; Yu, Lianjun 1
刊名	PROGRESS IN NATURAL SCIENCE
	2009-07-10
卷号	19 期号:7 页码:851-859
关键词	East Antarctica Grove Mountains Glacial erratics Spores and pollen Neogene
ISSN号	1002-0071
DOI	10.1016/j.pnsc.2008.01.040
文献子类	Article
英文摘要	Fossiliferous glacial erratics have been found in moraines of the Grove Mountains, east Antarctica since 1998 by Chinese National Antarctic Research Expedition (CHNARE) teams. These erratics were derived from a suite of glaciogene strata hidden beneath the Antarctic Ice Sheet in the Lambert glacier drainage system, and thus provide a record of Cenozoic paleoenvironmental conditions and fossil biotas that are so far unknown from outcrops and drill cores in this region. By microfossil analysis, sparse Neogene spores and pollen grains are revealed, including: Toroisporis (Lygodiaceae), Granulatisporites (Pteridaceae?), Osmunda (Osmundaceae), Polypodiaceae, Magnastriatites (Parkeriaceae), Deltoidospora, Araucariaceae, Taxodiaceae, Podocarpus (Podocarpaceae), Dacrydium (Podocarpaceae), Pinus (Pinaceae), Keteleeria (Pinaceae), Picea (Pinaceae), Tsuga (Pinaceae), Chenopodiaceae, Artemisia (Asteraceae), Asteraceae, Gramineae, Fraxinoipollenites (Oleaceae), Oleoidearumpollenites (Oleaceae), Oleaceae, Operculumpollis, Nothofagidites (Nothofagus), Rhus, Quercus (Fagaceae), Juglans (Juglandaceae), Pterocarya (Juglandaceae), Liquidambar (Hamamelidaceae), Ulmus (Ulmaceae), Ulmoidepites (Ulmaceae), Tilia, Proteacidites (Proteaceae) and Tricolpopollenites; but without any marine diatoms. Most of the spores and pollen grains in the erratics are considered to originate from local sources except for some older exotic components that might be recycled from the basement sedimentary rocks by the ice sheet, so they are in situ sporo-palynological assemblages. Furthermore, since the source areas of the glaciogenic sedimentary rocks are assumed to be local or in the up glacier areas, the palynological assemblages in these erratics represent an inland terrestrial flora during a warmer period of the ice-sheet evolutionary history. The ages of these erratics are also discussed based on the occurrence of some diagnostic pollens such as the Artemisia, Chenopodiaceae and Nothofagus, which implies Neogene (most probably Pliocene). As a preliminary conclusion, we think that the existence of the Cenozoic glaciogenic rocks and their palynological assemblages present new evidence for a large scale glacial retreat event in the Grove Mountains of east Antarctica, and thus support a dynamic East Antarctic Ice Sheet (EAIS). Furthermore, the absence of marine fossils in the samples analyzed not only provides additional evidence for a terrestrial sedimentary environment of these erratics, but also indicates that there is no transportation of Cenozoic marine fossils from the adjacent areas of the Grove Mountains. (C) 2009 National Natural Science Foundation of China and Chinese Academy of Sciences. Published by Elsevier Limited and Science in China Press. All rights reserved.
WOS关键词	PLIOCENE SORSDAL FORMATION ; PRINCE-CHARLES MOUNTAINS ; TRANSANTARCTIC MOUNTAINS ; SIRIUS GROUP ; LAMBERT GRABEN ; VESTFOLD HILLS ; ICE-SHEET ; STRATIGRAPHY ; MARINE ; REGION
WOS研究方向	Materials Science ; Science & Technology - Other Topics
语种	英语
出版者	ELSEVIER SCIENCE INC
WOS记录号	WOS:000266345100009
资助机构	National Natural Science Foundation of China(40631004 ; National Natural Science Foundation of China(40631004 ; National Natural Science Foundation of China(40631004 ; National Natural Science Foundation of China(40631004 ; 40202034) ; 40202034) ; 40202034) ; 40202034) ; National Natural Science Foundation of China(40631004 ; National Natural Science Foundation of China(40631004 ; National Natural Science Foundation of China(40631004 ; National Natural Science Foundation of China(40631004 ; 40202034) ; 40202034) ; 40202034) ; 40202034) ; National Natural Science Foundation of China(40631004 ; National Natural Science Foundation of China(40631004 ; National Natural Science Foundation of China(40631004 ; National Natural Science Foundation of China(40631004 ; 40202034) ; 40202034) ; 40202034) ; 40202034) ; National Natural Science Foundation of China(40631004 ; National Natural Science Foundation of China(40631004 ; National Natural Science Foundation of China(40631004 ; National Natural Science Foundation of China(40631004 ; 40202034) ; 40202034) ; 40202034) ; 40202034)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/70436]
专题	中国科学院地质与地球物理研究所
通讯作者	Fang, Aimin
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Tibet Plateau Res, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Fang, Aimin,Liu, Xiaohan,Wang, Weiming,et al. Cenozoic terrestrial palynological assemblages in the glacial erratics from the Grove Mountains, east Antarctica[J]. PROGRESS IN NATURAL SCIENCE,2009,19(7):851-859.
APA	Fang, Aimin,Liu, Xiaohan,Wang, Weiming,Huang, Feixin,&Yu, Lianjun.(2009).Cenozoic terrestrial palynological assemblages in the glacial erratics from the Grove Mountains, east Antarctica.PROGRESS IN NATURAL SCIENCE,19(7),851-859.
MLA	Fang, Aimin,et al."Cenozoic terrestrial palynological assemblages in the glacial erratics from the Grove Mountains, east Antarctica".PROGRESS IN NATURAL SCIENCE 19.7(2009):851-859.