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one publication added to basket [295619]

Ice sheet retreat and glacio-isostatic adjustment in Lutzow-Holm Bay, East Antarctica 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. (2017). Ice sheet retreat and glacio-isostatic adjustment in Lutzow-Holm Bay, East Antarctica. Quat. Sci. Rev. 169: 85-98. https://dx.doi.org/10.1016/j.quascirev.2017.06.003 In: Quaternary Science Reviews. Pergamon Press: Oxford; New York. ISSN 0277-3791; e-ISSN 1873-457X

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Beschikbaar in	Auteurs
VLIZ: Non-open access 341002 [ aanvragen ]

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Author keywords

Sea level changes; Antarctica; Holocene; Coastal geomorphology;Isolation lakes; Raised beaches; Glacial isostatic adjustment (GIA)models; Neotectonics

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Auteurs		Top
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.

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Abstract

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 Ltitzow 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.

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