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Radiocarbon is incorporated into all living organisms in proportion to its concentration in the environment.
When an organism dies, carbon is no longer incorporated into its tissues, but the radiocarbon present continues to decay at a known rate. The Pb-210 and Cs-137 datation service is also offered for sediments.
The CRS model and/or the slope regression model will be applied. cumulative dry weight (g/cm) is supplied with the model results and interpretation.
Several Radium-226(Ra-226) measurements are often required, usually 2 - 3 per Pb-210 core, to positively determine the Pb-210 background level throughout the core length.
Mean annual sedimentation rates over the last 20–30 years were determined in the pre-alpine Mondsee (Upper Austria) using Cs-137 and Pb(Po)-210 profiles for sediment core dating and two natural sediment markers.