Improving the time control of the Subboreal/Subatlantic transition in a Czech peat sequence by C-14 wiggle-matching

To achieve an optimal time-control for a late Subboreal to early Subatlanti c peat sequence from Pancavska Louka in the Czech Republic, different strat egies are applied to convert a series of radiocarbon dates into a calendar time-scale. The methods of selection and preparation of the samples for AMS C-14 dating are presented. The results of calibrating single radiocarbon d ates are compared with a C-14 wiggle-match strategy. As the accumulation ra te of the peat was not constant, the concentrations of arboreal pollen are used to estimate the accumulation rate changes and to correct for these cha nges. The resulting time-control represents the best solution for this peat sequence with the methods currently available. (C) 2000 Elsevier Science L td. All rights reserved.