Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.quascirev.2012.09.026 |
Multiple cosmogenic nuclides document the stability of the East Antarctic Ice Sheet in northern Victoria Land since the Late Miocene (5-7 Ma) | |
Di Nicola, Luigia1; Baroni, Carlo2,3; Strasky, Stefan4; Salvatore, Maria Cristina2; Schluechter, Christian5; Akcar, Naki5; Kubik, Peter W.6; Wieler, Rainer4 | |
通讯作者 | Di Nicola, Luigia |
来源期刊 | QUATERNARY SCIENCE REVIEWS
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ISSN | 0277-3791 |
出版年 | 2012 |
卷号 | 57页码:85-94 |
英文摘要 | The timing and amplitude of changes in the Antarctic ice level are relevant to understanding past climate fluctuations and ongoing changes in the global climate and sea levels. In this study, we present surface exposure ages based on in situ produced cosmogenic Be-10 and Ne-21 in the bedrock samples of glacially eroded relict surfaces from the Deep Freeze Range, northern Victoria Land. The proximity of this region to the East Antarctic Ice Sheet indicates that the area is sensitive to variations in inland ice volume, permitting the investigation of the behavioural relationship between the East Antarctic Ice Sheet and the alpine glacial system in northern Victoria Land. Dating erosional surfaces provides a precise chronology of northern Victoria Land paleoclimate evolution and allows us to correlate the East Antarctic Ice Sheet response to global climate events and local ice level variations. The Be-10 and Ne-21 concentrations from the highest peaks of the Deep Freeze Range strongly indicate that the relict landscape features were continuously exposed for 5-7 Ma. Denudation rates inferred from our data show that the erosion rate of the summits has been extremely low (similar to 5 cm/Ma) for at least 5-7 Ma. Along with evidence of persistent climate stability (cold and arid conditions) from other sectors of the Transantarctic Mountains. our results indicate that the transition from the wet-based to the cold-based glacial regime in northern Victoria Land occurred after the creation of the polar East Antarctic Ice Sheet in the Middle Miocene. (C) 2012 Elsevier Ltd. All rights reserved. |
英文关键词 | Antarctica Northern Victoria Land Multiple cosmogenic nuclide approach Exposure ages Glacial geomorphology Erosion rate Climate stability of East Antarctic Ice Sheet |
类型 | Article |
语种 | 英语 |
国家 | Scotland ; Italy ; Switzerland |
收录类别 | SCI-E |
WOS记录号 | WOS:000312355900007 |
WOS关键词 | TERRA-NOVA BAY ; SURFACE EXPOSURE AGES ; ROSS SEA REGION ; TRANSANTARCTIC-MOUNTAINS ; PRODUCTION-RATES ; DRY VALLEYS ; HALF-LIFE ; LANDSCAPE EVOLUTION ; BEACON SUPERGROUP ; TERRESTRIAL ROCKS |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
WOS研究方向 | Physical Geography ; Geology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/174726 |
作者单位 | 1.SUERC, E Kilbride G75 0QF, Lanark, Scotland; 2.Univ Pisa, Dipartimento Sci Terra, I-56126 Pisa, Italy; 3.CNR, Ist Geosci & Georisorse, I-56126 Pisa, Italy; 4.ETH, Inst Geochem & Petrol, CH-8092 Zurich, Switzerland; 5.Univ Bern, Inst Geol Sci, CH-3012 Bern, Switzerland; 6.ETH, Lab Ion Beam Phys, CH-8093 Zurich, Switzerland |
推荐引用方式 GB/T 7714 | Di Nicola, Luigia,Baroni, Carlo,Strasky, Stefan,et al. Multiple cosmogenic nuclides document the stability of the East Antarctic Ice Sheet in northern Victoria Land since the Late Miocene (5-7 Ma)[J],2012,57:85-94. |
APA | Di Nicola, Luigia.,Baroni, Carlo.,Strasky, Stefan.,Salvatore, Maria Cristina.,Schluechter, Christian.,...&Wieler, Rainer.(2012).Multiple cosmogenic nuclides document the stability of the East Antarctic Ice Sheet in northern Victoria Land since the Late Miocene (5-7 Ma).QUATERNARY SCIENCE REVIEWS,57,85-94. |
MLA | Di Nicola, Luigia,et al."Multiple cosmogenic nuclides document the stability of the East Antarctic Ice Sheet in northern Victoria Land since the Late Miocene (5-7 Ma)".QUATERNARY SCIENCE REVIEWS 57(2012):85-94. |
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