Cosmogenic Ne-21 concentrations and exposure ages of summit bedrocks in the Grove Mountains, Antarctica

doi:10.1007/s11430-010-0015-1

	Cosmogenic Ne-21 concentrations and exposure ages of summit bedrocks in the Grove Mountains, Antarctica
	Kong Ping 1,2; Ding Lin 2; Lai QingZhou 2; Huang FeiXin 3
刊名	SCIENCE CHINA-EARTH SCIENCES
	2010-04-01
卷号	53 期号:4 页码:518-521
关键词	Ne-21 Cosmogenic Nuclide Exposure Age Antarctica Grove Mountains
ISSN号	1674-7313
DOI	10.1007/s11430-010-0015-1
文献子类	Article
英文摘要	Various sources of Ne-21 and Ne-22 exist in surface rocks: cosmogenic, in situ nucleogenic from internal U and Th, trapped crustal nucleogenic and trapped atmospheric. This paper reports the first measurement, in China, of cosmogenic Ne-21 and Ne-22 in surface bedrocks. We developed a unique sample pre-treatment procedure that effectively removed inclusions inside quartz grains, and thus maximally reduced nucleogenic contributions of Ne-21 and Ne-22. Step-heating experiments show that concentrations of cosmogenic Ne-21 and Ne-22 in summit bedrock samples R9202 and R9203 from Grove Mountains, Antarctica, are (3.83 +/- 0.87)x10(8) and (5.2280.51)x10(8) atoms/g, respectively. The corresponding minimum exposure ages are 2.2 +/- 0.5 and 3.0 +/- 0.3 Ma. This indicates that the ice sheet in East Antarctica was uncovered the crest of Mount Harding, a typical nunatak in Grove Mountains, since at least mid-Pliocene.
WOS关键词	TERRESTRIAL ROCKS ; QUARTZ ; MA ; LANDSCAPE ; NUCLIDES ; HISTORY ; EROSION ; BURIAL ; CANYON ; NEON
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000276912200004
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) ; 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)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/73142]
专题	中国科学院地质与地球物理研究所
通讯作者	Kong Ping
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earths Deep Interior, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100085, Peoples R China 3.China Met Geol Bur, Inst Mineral Resources Res, Beijing 100025, Peoples R China
推荐引用方式 GB/T 7714	Kong Ping,Ding Lin,Lai QingZhou,et al. Cosmogenic Ne-21 concentrations and exposure ages of summit bedrocks in the Grove Mountains, Antarctica[J]. SCIENCE CHINA-EARTH SCIENCES,2010,53(4):518-521.
APA	Kong Ping,Ding Lin,Lai QingZhou,&Huang FeiXin.(2010).Cosmogenic Ne-21 concentrations and exposure ages of summit bedrocks in the Grove Mountains, Antarctica.SCIENCE CHINA-EARTH SCIENCES,53(4),518-521.
MLA	Kong Ping,et al."Cosmogenic Ne-21 concentrations and exposure ages of summit bedrocks in the Grove Mountains, Antarctica".SCIENCE CHINA-EARTH SCIENCES 53.4(2010):518-521.