%0 Journal Article %T The Use of Carbon-14 and Tritium For Peat and Water Dynamics Characterization: Case of epkeliai Peatland, Southeastern Lithuania %A Jonas Ma eika %A %A Rimant Guobyt %A Gintautas Kibirk tis %A Rimantas Petro ius %A ana Skuratovi %A Julius Taminskas %J Geochronometria %@ 1897-1695 %D 2009 %I %R 10.2478/v10003-009-0007-3 %X The present investigation conducted in epkeliai peatland (south-eastern Lithuania) deals with two radioisotope methods - carbon-14 (14C) and tritium (3H). 14C was applied to peatland chronology and sedimentation rate estimation and 3H to peat water dynamics characterization. According to 14C data, peatland development began since 12650-11350 years cal BP and peat accumulation since 10550-9700 years cal BP with peat accumulation rate of 0.27-0.79 mm/year in the central part of the peatland. The peat water mean residence time and basic groundwater flow was estimated to be respectively about 27¡À6 years and 62¡À15 mm based on 3H data. The obtained data showed relatively undisturbed natural condition of epkeliai peatland in the studied sites. %K Carbon-14 %K Tritium %K Peat %K Groundwater Residence Time %K Holocene %U http://versita.metapress.com/content/k8h1w8u630m8m141/?p=72942648323b4a818d294505a4b6e3c4&pi=4