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Palaeoenvironmental changes between ca. 100 ka and 50 ka as evidenced by palyno- and chronostratigraphical data from the south-eastern coast of the Gulf of Finlandстатья
- Авторы: Bolikhovskaya N.S., Molodkov A.N.
- Сборник: Рельеф и четвертичные образования Арктики, Субарктики и Северо-Запада России. Материалы ежегодной конференции по результатам экспедиционных исследований
- Серия: Выпуск 8
- Год издания: 2021
- Место издания: Санкт-Петербург
- Первая страница: 26
- Последняя страница: 30
- DOI: 10.24412/2687-1092-2021-8-26-30
- Аннотация: An overview of the results obtained by collaborative use of feldspar-based infrared optically stimulated luminescence (IR-OSL) dated records of pollen-induced palaeoclimate and palaeoenvironmental proxies is presented. Palynological analysis and IR-OSL dates for the first time produced a comprehensive detailed and dated continuous sequence of palynological zones ranging from ca. 100 ka to ca. 50 ka and made it possible to trace climate and palaeoenvironmental evolution in this interval. Representative pollen spectra provided convincing evidence of a warm interval of interglacial rank at least during the latter half of MIS 5 and the period of significant cooling during MIS 4. The findings obtained during the present study are also convincingly confirmed by those of our previous long-term investigations of warm climate-related shell-bearing deposits of various origins from Northern Eurasia including climatically highly sensitive Eurasian Arctic palaeo-shelf area. These results indicated that the overwhelming majority of the warm climate-related dates (ca. 82%) is also concentrated in the latter half of MIS 5 in the time range between 110 ka and 70 ka.
- Добавил в систему: Болиховская Наталия Степановна