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DOI	10.1007/s11430-010-0015-1
	Cosmogenic Ne-21 concentrations and exposure ages of summit bedrocks in the Grove Mountains, Antarctica
	Kong Ping; Ding Lin; Lai QingZhou; Huang FeiXin
通讯作者	Kong, P (通讯作者)
发表日期	2010
ISSN	1674-7313
起始页码	518
结束页码	521
卷号	53 期号:4
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.
关键词	TERRESTRIAL ROCKS QUARTZ MA LANDSCAPE NUCLIDES HISTORY EROSION BURIAL CANYON NEON
英文关键词	Ne-21; cosmogenic nuclide; exposure age; Antarctica; Grove Mountains
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000276912200004
来源期刊	SCIENCE CHINA-EARTH SCIENCES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257746
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]. 中国科学院青藏高原研究所,2010,53(4).
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).
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).