DOI: 10.1016/j.quascirev.2017.06.003
论文题名: Ice sheet retreat and glacio-isostatic adjustment in Lützow-Holm Bay, East Antarctica
作者: Verleyen E. ; Tavernier I. ; Hodgson D.A. ; Whitehouse P.L. ; Kudoh S. ; Imura S. ; Heirman K. ; Bentley M.J. ; Roberts S.J. ; De Batist M. ; Sabbe K. ; Vyverman W.
刊名: Quaternary Science Reviews
出版年: 2017
卷: 169 起始页码: 85
结束页码: 98
语种: 英语
英文关键词: Antarctica
; Coastal geomorphology
; Glacial isostatic adjustment (GIA) models
; Holocene
; Isolation lakes
; Neotectonics
; Raised beaches
; Sea level changes
Scopus关键词: Glacial geology
; Glaciers
; Sea level
; Tectonics
; Antarctica
; Glacial isostatic adjustment
; Holocenes
; Neotectonics
; Sealevel change
; Ice
; beach
; deglaciation
; geomorphology
; Holocene
; ice retreat
; ice sheet
; lacustrine environment
; Last Glacial Maximum
; neotectonics
; numerical model
; radiocarbon dating
; sea level change
; Antarctic Ice Sheet
; Antarctica
; Antarctica
; East Antarctic Ice Sheet
; East Antarctica
; Lutzow-Holm Bay
; Shirase Glacier
; West Ongul Island
英文摘要: The East Antarctic Ice Sheet has relatively few field data to constrain its past volume and contribution to global sea-level change since the Last Glacial Maximum. We provide new data on deglaciation history and develop new relative sea-level (RSL) curves along an 80 km transect (from Skallen to Skarsvnes, Langhovde and the Ongul Islands) in Lützow Holm Bay, East Antarctica. The geological constraints were compared with output from two Glacial Isostatic Adjustment (GIA) models. The minimum radiocarbon age for regional deglaciation is c. 11,240 cal. yr BP on West Ongul Island with progressively younger deglaciation ages approaching the main regional ice outflow at Shirase Glacier. Marked regional differences in the magnitude and timing of RSL change were observed. More in particular, in Skarvsnes a minimum marine limit of 32.7 m was inferred, which is c. 12.7 m higher than previously published evidence, and at least 15 m higher than that reported in the other three ice-free areas. Current GIA model predictions slightly underestimate the rate of Late Holocene RSL fall at Skallen, Langhovde, and West Ongul, but provide a reasonable fit to the reconstructed minimum marine limit at these sites. GIA model predictions are unable to provide an explanation for the shape of the reconstructed RSL curve at Skarvsnes. We consider a range of possible explanations for the Skarvsnes RSL data and favour an interpretation where the anomalously high marine limit and rate of RSL fall is due to reactivation of a local fault. © 2017 Elsevier Ltd 资助项目: Verleyen, E.
; Lab. Protistology & Aquatic Ecology, Department of Biology, Ghent University, Campus Sterre, Krijgslaan 281 - S8, Belgium
; 电子邮件: elie.verleyen@ugent.be
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59170
Appears in Collections: 过去全球变化的重建
There are no files associated with this item.
作者单位: Lab. Protistology & Aquatic Ecology, Department of Biology, Ghent University, Campus Sterre, Krijgslaan 281 - S8, Ghent, Belgium; British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge, United Kingdom; Durham University, Department of Geography, South Road, Durham, United Kingdom; National Institute of Polar Research, 10-3, Midoricho, Tachikawa, Tokyo, Japan; Renard Centre of Marine Geology, Ghent University, Campus Sterre, Krijgslaan 281 - S8, Ghent, Belgium
Recommended Citation:
Verleyen E.,Tavernier I.,Hodgson D.A.,et al. Ice sheet retreat and glacio-isostatic adjustment in Lützow-Holm Bay, East Antarctica[J]. Quaternary Science Reviews,2017-01-01,169