What question did this study set out to answer?

This study aims to understand the discrepancies in 14C ages of materials from different reservoirs compared to the atmospheric CO2 standard.

January 1, 1993Radiocarbon1,077 citationsOpen Access

Modeling Atmospheric 14C Influences and 14C Ages of Marine Samples to 10,000 BC

MSMinze StuiverUniversity of Hohenheim TBThomas F. BraziunasGreen River Community College

Key Points

This study aims to understand the discrepancies in 14C ages of materials from different reservoirs compared to the atmospheric CO2 standard.
Analyzed radiocarbon ages of tree rings alongside marine samples.
Investigated the differences in 14C activity between atmospheric CO2 and marine environments.
Employed calibration techniques to assess the impact of reservoir effects on 14C age determination.
Demonstrated that initial 14C activity in marine samples can differ significantly from atmospheric levels.
Found that the measured 14C activity reflects both decay and reservoir-specific activity, causing age discrepancies.
Highlighted the need for precise calibration when dating samples from various isotopic reservoirs.

Abstract

The detailed radiocarbon age vs. calibrated (cal) age studies of tree rings reported in this Calibration Issue provide a unique data set for precise 14 C age calibration of materials formed in isotopic equilibrium with atmospheric CO 2 . The situation is more complex for organisms formed in other reservoirs, such as lakes and oceans. Here the initial specific 14 C activity may differ from that of the contemporaneous atmosphere. The measured remaining 14 C activity of samples formed in such reservoirs not only reflects 14 C decay (related to sample age) but also the reservoir 14 C activity. As the measured sample 14 C activity figures into the calculation of a conventional 14 C age (Stuiver & Polach 1977), apparent 14 C age differences occur when contemporaneously grown samples of different reservoirs are dated.

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Cite This Study

Stuiver et al. (Fri,) studied this question.

synapsesocial.com/papers/6a0df719cae7912d2fa5708a https://doi.org/https://doi.org/10.1017/s0033822200013874

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