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 ~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.

中文翻译：

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末次冰期期间英爱冰盖东段的后退动态

报告了通过北海盆地和英格兰东部的 BRITICE-CHRONO 横断面 2 的发现。我们定义了约 31 到 16 ka 之间的冰盖边缘振荡，有七个不同的前冰盖限制（L1-7）受贝叶斯统计分析的约束。Bolders Bank 地层记录了北海叶的最南端（L1；25.8-24.6 ka）。L2 代表冰盖振荡和早期撤退到 Dogger Bank 的北部边缘（23.5-22.2 ka），诺福克北部的 Garret Hill Moraine 在 21.5-20.8 ka 记录到 L3 的显着区域重新前进。约 26-21 ka 的冰边缘振荡导致 L1、L2 和 L3 部分至完全叠印。与 L1-3 相关的冰坝湖泊，包括亨伯湖，年代为 24.1-22.3 ka。冰盖振荡和从 L4 退到 L5 发生在 19 日之间。7 和 17.3 ka，搁浅区楔形标志着从陆地到海洋潮水条件的重要转变，这是由 19.9 和 17.5 ka 之间 Dogger Lake 溢洪道的开放引发的。L6 与冰川条件下的冰退缩有关，并在 15.8 ka 前最终退冰到福斯湾。L7 (~15 ka) 代表从 Bosies Bank 到 Moray Firth 的冰撤退。