Age determination of sediment core WOR80_N, Woryty, Poland

Samples from the mid/late holocene series were dated in Laboratorium C-14 at the Cambridge-University (Dr. V.R. Switsur), the NaOH soluble fraction was removed. Conventional age based on Libby's half-time (5568 years). A calibration was performed using the correction tables of DAMON et al. (1972), assuming an apparent age of 700 years. The datings of the palynologically significant level of the first Ulmus decline gave close ages in Woryty 82 (5115±75 - Gd-1193) and in Woryty 80 (4975±75 - Q-1437). However, from this level upwards the Cambridge dates show an increasingly older age as compared with the Gliwice dates, e.g. Woryty 82 date 2080±80 (Gd-1190) against Woryty 80 date 2620±60 (Q-1441), both dating the maximum of the Roman settlment phase. The reasons of these discrepancies are unclear. See also the age determination of Woryty 82, doi:10.1594/PANGAEA.740130. This dataset was archived on 2010-05-11 from the EPD database (http://www.europeanpollendatabase.net).