globalchange  > 气候减缓与适应
DOI: 10.1016/j.quascirev.2018.05.008
Scopus记录号: 2-s2.0-85047139664
论文题名:
10Be dating of former glacial Lake Naskaupi (Québec-Labrador) and timing of its discharges during the last deglaciation
作者: Dubé-Loubert H.; Roy M.; Schaefer J.M.; Clark P.U.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 191
起始页码: 31
结束页码: 40
语种: 英语
英文关键词: 8.2-ka cold event ; Cosmogenic dating ; Glacial lake outburst drainage ; Glacial lakes ; Labrador sector ; Last deglaciation ; Laurentide ice sheet
Scopus关键词: Geochronology ; Glacial geology ; Glaciers ; Ice ; Timing circuits ; 8.2-ka cold event ; Cosmogenic dating ; Glacial lakes ; Labrador sector ; Last deglaciation ; Laurentide ice sheets ; Lakes
英文摘要: The last deglaciation of the Laurentide Ice Sheet in northern Quebec and Labrador led to the formation of several glacial lakes that drained into Ungava Bay and the nearby Labrador Sea. Assessing the potential impact of their drainage on ocean surface conditions and climate, however, is limited by the few existing age constraints on ice retreat and associated evolution of these lakes. Here we report 21 10Be ages from shorelines and an outburst flood landform formed by Lake Naskaupi, one of the largest glacial lakes in this region. The results indicate that the lake drained from its full extent at 8300 ± 300 a, suggesting that it may have contributed to the freshwater forcing initiated by the drainage of Lake Agassiz-Ojibway that caused the 8.2-ka cold event. Additionally, the results provide important constraints on the position of the ice margin of the Labrador Sector during its retreat across this region. © 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/112166
Appears in Collections:气候减缓与适应

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作者单位: Department of Earth and Atmospheric Sciences & GEOTOP Research Center, University of Quebec at MontrealQC H3C 3P8, Canada; Ministry of Energy and Natural Resources of Quebec, Val-d'Or, QC J9P 3L4, Canada; Lamont-Doherty Earth Observatory, Geochemistry, 409 Comer Building, 61 Route 9W, P.O. Box 1000, Palisades, NY 10964, United States; Department of Earth and Environmental Sciences, Columbia University, New York, NY 10027, United States; College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, United States

Recommended Citation:
Dubé-Loubert H.,Roy M.,Schaefer J.M.,et al. 10Be dating of former glacial Lake Naskaupi (Québec-Labrador) and timing of its discharges during the last deglaciation[J]. Quaternary Science Reviews,2018-01-01,191
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