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Journal Article

Quality dating: a well-defined protocol implemented at ETH for high-precision 14C-Dates tested on late glacial wood

Authors

Sookdeo,  Adam
External Organizations;

Kromer,  Bernd
External Organizations;

Büntgen,  Ulf
External Organizations;

Friedrich,  Michael
External Organizations;

Friedrich,  Ronny
External Organizations;

/persons/resource/ghelle

Helle,  G.
4.3 Climate Dynamics and Landscape Evolution, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/mpauly

Pauly,  Maren
4.3 Climate Dynamics and Landscape Evolution, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Nievergelt,  Daniel
External Organizations;

Reinig,  Frederick
External Organizations;

Treydte,  Kerstin
External Organizations;

Synal,  Hans-Arno
External Organizations;

Wacker,  Lukas
External Organizations;

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Fulltext (public)

5001093.pdf
(Publisher version), 682KB

Supplementary Material (public)
There is no public supplementary material available
Citation

Sookdeo, A., Kromer, B., Büntgen, U., Friedrich, M., Friedrich, R., Helle, G., Pauly, M., Nievergelt, D., Reinig, F., Treydte, K., Synal, H.-A., Wacker, L. (2020): Quality dating: a well-defined protocol implemented at ETH for high-precision 14C-Dates tested on late glacial wood. - Radiocarbon, 62, 4, 891-899.
https://doi.org/10.1017/RDC.2019.132


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5001093
Abstract
Advances in accelerator mass spectrometry have resulted in an unprecedented amount of new high-precision radiocarbon (14C) -dates, some of which will redefine the international 14C calibration curves (IntCal and SHCal). Often these datasets are unaccompanied by detailed quality insurances in place at the laboratory, questioning whether the 14C structure is real, a result of a laboratory variation or measurement-scatter. A handful of intercomparison studies attempt to elucidate laboratory offsets but may fail to identify measurement-scatter and are often financially constrained. Here we introduce a protocol, called Quality Dating, implemented at ETH-Zürich to ensure reproducible and accurate high-precision 14C-dates. The protocol highlights the importance of the continuous measurements and evaluation of blanks, standards, references and replicates. This protocol is tested on an absolutely dated German Late Glacial tree-ring chronology, part of which is intercompared with the Curt Engelhorn-Center for Archaeometry, Mannheim, Germany (CEZA). The combined dataset contains 170 highly resolved, highly precise 14C-dates that supplement three decadal dates spanning 280 cal. years in IntCal, and provides detailed 14C structure for this interval.