Retreat dynamics of the eastern sector of the British-Irish Ice Sheet during the last glaciation

被引：22

作者：

Evans, David J. A. ^{[1
]}

Roberts, David H. ^{[1
]}

Bateman, Mark D. ^{[2
]}

Clark, Chris D. ^{[2
]}

Medialdea, Alicia ^{[3
]}

Callard, Louise ^{[4
]}

Grimoldi, Elena ^{[5
]}

Chiverrell, Richard C. ^{[6
]}

Ely, Jeremy ^{[2
]}

Dove, Dayton ^{[7
]}

Cofaigh, Colm O. ^{[1
]}

Saher, Margot ^{[8
]}

Bradwell, Tom ^{[9
]}

Moreton, Steven G. ^{[10
]}

Fabel, Derek ^{[11
]}

Bradley, Sarah L. ^{[12
]}

机构：

[1] Univ Durham, Dept Geog, Durham, England

[2] Univ Sheffield, Dept Geog, Sheffield, S Yorkshire, England

[3] Natl Res Ctr Human Evolut CENIEH, Burgos, Spain

[4] Newcastle Univ, Sch Geog Polit & Sociol, Newcastle Upon Tyne, Tyne & Wear, England

[5] Fugro, Fugro House, Oxford, England

[6] Univ Liverpool, Sch Environm Sci, Liverpool, Merseyside, England

[7] Herriot Watt Univ, Lyell Ctr, British Geol Survey, Edinburgh, Midlothian, Scotland

[8] Bangor Univ, Sch Ocean Sci, Anglesey, Wales

[9] Univ Stirling, Biol & Environm Sci, Stirling, Scotland

[10] NERC, Radiocarbon Facil, E Kilbride, Lanark, Scotland

[11] Scottish Univ Environm Res Ctr, E Kilbride, Lanark, Scotland

[12] Univ Cologne, Inst Geog, Cologne, Germany

来源：

JOURNAL OF QUATERNARY SCIENCE | 2021年 / 36卷 / 05期

基金：

英国自然环境研究理事会;

关键词：

British-Irish Ice Sheet; ice-sheet flow dynamics; MIS2; North Sea Lobe; palaeoglaciology; NORTH-SEA LOBE; LATE WEICHSELIAN GLACIATION; PROGLACIAL LAKE HUMBER; WITCH GROUND BASIN; OXFORD AMS SYSTEM; DEPOSITIONAL-ENVIRONMENTS; DEVENSIAN GLACIATION; RADIOCARBON-DATES; MARINE STRATA; LEVEL CHANGES;

D O I：

10.1002/jqs.3275

中图分类号：

P9 [自然地理学];

学科分类号：

0705 ; 070501 ;

摘要：

The findings of BRITICE-CHRONO Transect 2 through the North Sea Basin and eastern England are reported. We define ice-sheet marginal oscillation between -31 and 16 ka, with seven distinctive former ice-sheet limits (L1-7) constrained by Bayesian statistical analysis. The southernmost limit of the North Sea Lobe is recorded by the Bolders Bank Formation (L1; 25.8-24.6 ka). L2 represents ice-sheet oscillation and early retreat to the northern edge of the Dogger Bank (23.5-22.2 ka), with the Garret Hill Moraine in north Norfolk recording a significant regional readvance to L3 at 21.5-20.8 ka. Ice-marginal oscillations at similar to 26-21 ka resulted in L1, L2 and L3 being partially to totally overprinted. Ice-dammed lakes related to L1-3, including Lake Humber, are dated at 24.1-22.3 ka. Ice-sheet oscillation and retreat from L4 to L5 occurred between 19.7 and 17.3 ka, with grounding zone wedges marking an important transition from terrestrial to marine tidewater conditions, triggered by the opening of the Dogger Lake spillway between 19.9 and 17.5 ka. L6 relates to ice retreat under glacimarine conditions and final ice retreat into the Firth of Forth by 15.8 ka. L7 (-15 ka) represents an ice retreat from Bosies Bank into the Moray Firth. Copyright (C) 2021 The Authors Journal of Quaternary Science Published by John Wiley & Sons Ltd

引用

页码：723 / 751

页数：29

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