globalchange  > 气候减缓与适应
DOI: 10.1016/j.quascirev.2018.01.006
Scopus记录号: 2-s2.0-85042077640
论文题名:
Evidence for slow late-glacial ice retreat in the upper Rangitata Valley, South Island, New Zealand
作者: Shulmeister J.; Fink D.; Winkler S.; Thackray G.D.; Borsellino R.; Hemmingsen M.; Rittenour T.M.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 185
起始页码: 102
结束页码: 112
语种: 英语
Scopus关键词: Glacial geology ; Landforms ; Cosmogenic radionuclides ; Data support ; Deglaciations ; Glacial ice ; Proglacial lakes ; South Island ; South Island , New Zealand ; Terminal moraines ; Ice ; boulder ; cosmogenic radionuclide ; deglaciation ; glacier dynamics ; ice retreat ; late glacial ; moraine ; proglacial environment ; valley ; volume change ; warming ; Canterbury [South Island] ; New Zealand ; Rakaia Valley ; Rangitata River ; South Island ; South Island
英文摘要: A suite of cosmogenic radionuclide ages taken from boulders on lateral and latero-terminal moraines in the Rangitata Valley, eastern South Island, New Zealand demonstrates that relatively thick ice occupied valley reaches inland of the Rangitata Gorge until c. 21 ka. Thereafter ice began to thin, and by c. 17 ka it had retreated 33 km up-valley of the Rangitata Gorge to the Butler-Brabazon Downs, a structurally created basin in the upper Rangitata Valley. Despite its magnitude, this retreat represents a minor ice volume reduction from 21 ka to 17 ka, and numerous lateral moraines preserved suggest a relatively gradual retreat over that 4 ka period. In contrast to records from adjacent valleys, there is no evidence for an ice-collapse at c. 18 ka. We argue that the Rangitata record constitutes a more direct record of glacial response to deglacial climate than other records where glacial dynamics were influenced by proglacial lake development, such as the Rakaia Valley to the North and the major valleys in the Mackenzie Basin to the south-west. Our data supports the concept of a gradual warming during the early deglaciation in the South Island New Zealand. © 2018 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112254
Appears in Collections:气候减缓与适应

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作者单位: School of Earth and Environmental Sciences, University of Queensland, St Lucia, QLD 4072, Australia; Australian Nuclear Science and Technology Organisation, Lucas Heights, Australia; Institut für Geographie und Geologie, Universität Würzburg, Am Hubland, Würzburg, D-97074, Germany; Department of Geosciences, Idaho State University, Pocatello, ID, United States; Primary Science Solutions LTD., Christchurch, New Zealand; Department of Geology, Utah State University, Logan, UT 84322-4505, United States

Recommended Citation:
Shulmeister J.,Fink D.,Winkler S.,et al. Evidence for slow late-glacial ice retreat in the upper Rangitata Valley, South Island, New Zealand[J]. Quaternary Science Reviews,2018-01-01,185
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