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The Unreliability of 14C Dates Obtained from Buried Sandy Podzols

Published online by Cambridge University Press:  18 July 2016

Mebus A Geyh ,
Günter Roeschmann ,
T A Wijmstra  and
A A Middeldorp
Mebus A Geyh
Affiliation:
Niedersächsisches Landesamt für Bodenforschung, D 3000 Hannover, Federal Republic of Germany
Günter Roeschmann
Affiliation:
Niedersächsisches Landesamt für Bodenforschung, D 3000 Hannover, Federal Republic of Germany
T A Wijmstra
Affiliation:
Universiteit van Amsterdam, Hugo de Vries Laboratorium, NL 1018 BX Amsterdam, The Netherlands
A A Middeldorp
Affiliation:
Universiteit van Amsterdam, Hugo de Vries Laboratorium, NL 1018 BX Amsterdam, The Netherlands
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Abstract

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A test for the reliability of 14C dating of soil was made at two sites with buried, autochthonous, and in parts, allochthonous sandy podzols, dated either litho- and pedostratigraphically or palynologically. The differences between the age ranges obtained and the apparent mean residence times (AMRT) calculated from the 14C content of alkaline extracts from fossil soil layers and horizons lean in organic matter exceed 10,000 years, corresponding to a maximum contamination with recent carbon of up to 50 %. The use of correction factors for the apparent mean residence times of podzols is not valid, not even for climate zones, because these values have a broad scatter for the same profile.

Type
III. 14C Applications
Information
Radiocarbon , Volume 25 , Issue 2: 11th International Radiocarbon Conference , 1983 , pp. 409 - 416
Copyright
Copyright © The American Journal of Science 

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