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1 2025

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Climate change and environmental responses over the last 13,000 years deduced from analysis of annually laminated lake deposits of North-Central Europe

Błaszkiewicz Mirosław, Brauer Achim, Słowiński Michał

Przegląd Geologiczny

2025

Vol. 73, nr 2

158--169

We describe annually laminated deposits from the bottoms of Lake Czechowskie and Lake Gościąż in Poland, Lake Tiefer in Germany and the palaeolake Trzechowskie in Poland, as analysed by a Polish-German multidisciplinary research team. For each site, absolute dating and varve chronology provided the basis for an age-depth model, with palaeoecological and geochemical analyses being carried out. The results allowed us to characterize the responses of the natural environments around these lakes to global climate changes of the last 13,000 years. Techniques including microlithofacies analyses, XRF scanning, beryllium-10 analyses and, above all, tephrochronological analyses, allowed precise cross-correlation of the stratigraphic profiles in the lakes studied. This made it possible to determine leads and lags in the various environmental responses to global climate change in the Central European Lowland in an east-west transect, taking into account the degree of climate continentalism. The results indicated the high utility of annually laminated lake deposits in palaeoclimatic and palaeoenvironmental analyses, including those reflecting the influence of human activity. The results may be helpful in developing effective measures for adapting natural environments to projected climate changes.