Volcanic ash can disperse thousands of kilometres from the source volcano and provide valuable chronostratigraphic markers for palaeoclimate studies. We present new cryptotephra findings of historical and modern Icelandic eruptions in annually laminated lacustrine sediment records from several sites within a 570 km SW–NE transect across northern Poland. Sediments from the two lakes Wąsoskie and Szurpiły contain glass shards originating from the Plinian Askja ad 1875 eruption and showing bimodal, rhyolitic and dacitic affinities. A further cryptotephra finding in Lake Lubińskie suggests a potential origin from the Hekla ad 1845 eruption. These new findings extend the tephra dispersal map towards the south‐east and provide valuable isochrons for the synchronisation of palaeoclimate proxy data at the termination of the Little Ice Age in central eastern Europe. Very low glass concentrations of modern cryptotephra in Lake Wąsoskie were potentially correlated with the Eyjafjallajökull ad 2010 eruption. Further findings in the uppermost sediments of lakes Szurpiły and Żabińskie in north‐eastern Poland tentatively suggest other sources from either the Hekla and/or Kamchatkan volcanoes.

中文翻译：

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在瓦尔韦德湖沉积物中探测到历史悠久的Askja ad 1875和现代冰岛隐足类动物–在波兰北部进行的首次系统搜索结果

火山灰可以从源火山中散布数千公里，并为古气候研究提供有价值的年代地层标志。我们在波兰北部570 km SW-NE断面内多个站点的每年层压的湖相沉积物中，记录了历史和现代冰岛喷发的新隐密码学发现。来自两个湖泊Wąsoskie和Szurpiły沉积物包含来自普林尼式阿斯恰火山玻璃碎片始发广告1875喷发和表示双峰，流纹和英安亲和力。在卢比恩斯基湖发现的另一种隐胎表明其可能是来自Hekla广告1845年爆发。这些新发现将特非拉散布图扩展到东南部，为东欧中部小冰期结束时古气候代用数据的同步提供了宝贵的等时线。现代cryptotephra在Wąsoskie湖的极低的玻璃浓度的埃亚菲亚德拉冰盖是潜在相关广告2010喷发。波兰东北部Szurpiły湖和Żabińskie湖最上层沉积物的进一步发现，初步表明了来自Hekla和/或Kamchatkan火山的其他来源。