Abstract—

This paper presents results of the micropaleontological study of permafrost sediments exposed by CHUK 1/17 borehole at Cape Maly Chukochy, on the coast of the East Siberian Sea (Kolyma Lowland). Micropaleontological analysis, together with the lithological structure and the main physicochemical characteristics, enabled reconstructing sedimentation conditions during transition from nearshore marine to continental environments in the Middle and Late Neopleistocene. The existence of a tundra-steppe biome was confirmed for this region, which shows its significant advancement to the north. This study, using the example of this territory, shows the importance of studying microfossils for understanding the history of the region in the Quaternary and lays the basis for further microbiological and metagenomic studies of the sediments exposed by the borehole.

中文翻译：

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中-晚新世马利楚科奇角（科雷马低地）的环境演化：微古生物学证据

摘要-

本文介绍了对东西伯利亚海岸（科雷马低地）马利楚科奇角 CHUK 1/17 钻孔暴露的永久冻土沉积物进行微古生物学研究的结果。微古生物分析结合岩性结构和主要理化特征，重建了新世中晚期近岸海相向陆相环境转变过程中的沉积条件。该地区证实了苔原草原生物群落的存在，这表明该地区向北取得了重大进展。本研究以该地区为例，