During the Last Glacial Maximum, the coast of Finnmark county, northern Norway, was covered by the Scandinavian Ice Sheet (SIS), which coalesced with the Barents Sea Ice Sheet (BSIS) off the coast. The region is thus important for our understanding of the dynamic interactions between the BSIS and the SIS, yet it remains one of the least dated regions covered by the SIS. To improve the chronological constraints, we present 23 new ¹⁰Be ages from eight localities in northernmost Norway and Finland, and discuss implications for the pattern and timing of ice‐sheet retreat in the region. The samples were collected along a 240‐km‐long north–south transect ranging from the outer coast of Nordkinn peninsula (Norway) to Lake Inarijärvi (Finland). The new exposure ages indicate deglaciation of the outer coast at ~14.5 ka. From there, the ice retreated southward until it reached the Main substage moraine complex just north of the Norwegian‐Finnish border during the Younger Dryas. South of the Main substage moraines the deglaciation appears to have become more rapid, eventually reaching Inari, at the southern end of our transect, around 10.4±1.4 ka.

中文翻译：

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10Be挪威和芬兰最北端冰消作用的表面暴露年代

在最后一次冰川最大爆发期间，挪威北部芬马克郡的海岸被斯堪的纳维亚冰盖（SIS）覆盖，斯堪的纳维亚冰盖与巴伦支海冰盖（BSIS）融合在了海岸附近。因此，该区域对于我们了解BSIS与SIS之间的动态交互非常重要，但它仍然是SIS涵盖的日期最少的区域之一。为了改善时间顺序约束，我们提出了23个新的¹⁰来自挪威和芬兰最北端的八个地方，并讨论对该地区冰盖撤退的方式和时间的影响。样本是沿着从北诺金半岛（挪威）外海岸到伊纳里耶尔维湖（芬兰）的240公里长的南北样带采集的。新的暴露年龄表明外海岸在〜14.5 ka处有冰消作用。从那里，冰层向南退缩，直到在年轻树妖（Younger Dryas）期间到达挪威-芬兰边界以北的Main副层冰ora复合体。在主要子阶段的南部，冰晶脱冰似乎变得更加迅速，最终到达样带南端的伊纳里（Inari），大约10.4±1.4 ka。