Radiometric dating of sediment records from mountain lakes in the Tatra Mountains

Sediment cores from nine different lakes in the Tatra Mountains, collected as part of the EU funded AL:PE, MOLAR and EMERGE projects investigating natural environmental records stored in remote mountain lake sediment sequences, were dated radiometrically by ²¹⁰Pb and ¹³⁷Cs. At five sites, D?ugi Staw G?sienicowy and Zielony Staw G?sienicowy on the Polish side of the Tatra Mountains and Starolesnianske pleso, Ni?né Terianske pleso, and L’adové pleso on the Slovak side of the Tatra Mountains, the cores were sectioned at close intervals and analysed in detail to produce a high resolution chronology. For the remaining four sites, Zmarzly Staw G?sienicowy (Poland), and Vel’ké Hincovo pleso, Vy?né Temnosmre?inské pleso, Vy?né Wahlenbergovo pleso (Slovakia), it was sufficient to establish a low resolution sketch chronology and only a few samples were analysed from each core. At L’adové pleso, multiple cores were collected in order to establish spatial distribution of sediments over the bed of the lake. Cores from all sites had good records of the fallout radionuclides from which it was possible to construct reliable chronologies of the recent sediments.