DOI: 10.5281/zenodo.14544322
title: Geochronology of the Batagay Megaslump in East Siberia: B19-LU luminescence dating data sets and R scripts

description: To improve the geochronology of the ancient permafrost deposits exposed in the headwall of the Batagay Megaslump in East Siberia (67.58°N, 134.77°E), we estimated the age of frozen sediments with luminescence dating and supplemented the results with other dating approaches and stratigraphical interpretation.

Important note: There is a new version of this repository, which contains the specific paleodose calculations, environmental dose rates and sample ages published in Opel et al., see the reference below. For the updated and extended data sets see here: doi.org/10.5281/zenodo.17481529

Data published in: Opel, T., Wolter, J., Kizyakov, A., Grotheer, H., Gentz, T., Mollenhauer, G., Fritz, M., Fuchs, M.C., Lauer, T., Mittelstraß, D., Meyer, H., Wetterich, S., (in revision). Geochronology of the Upper Ice Complex (Yedoma) exposed in the Batagay Megaslump. East Siberia. Arctic, Antarctic and Alpine Research.
description: This data set contains infrared-stimulated luminescence (IRSL) measurements of the K-feldspar fraction of B19 samples. This data set contains also data analysis scripts and reports. The measurements (*.binx files) were performed at two Risø TL/OSL DA-20 readers (Bøtter-Jensen et al. 2003) using the pIR-IRSL290 protocol described by Thiel et al. (2011). The analyses were coded in R and formatted, commented and compiled in Quarto scripts (*.qmd files), automatically created analysis reports (*.pdf files) and result tables (*.txt files). To run the R code, the packages Luminescence (Kreutzer et al. 2023) and OSLdecomposition (Mittelstraß et a. 2022) are necessary.

 

Data structure

00 Data sets.zipContains the raw luminescence dating measurements of B19-LU-05, -06, -13 and -14 and the fading test measurement of B19-LU-01 in the NTU Risø OSL/TL reader data format (*.binx).

01 Paleodose calculations (first iteration).zipContains Quarto R scripts analysing luminescence dating measurements of B19-LU-05, -06, -13 and -14, detailed analysis reports and result tables containing equivalent doses and other parameters. The analyses were performed in three batches between September 2022 and July 2023 and did not use the same script parameters as the knowledge about these improved with growing data and experience. 

02 Paleodose calculations (second iteration, uniform settings).zipContains reworked and shortened Quarto R scripts, analysis reports and result tables analysing the same data as in the ‘01’ folder. This time the script parameters were identical.

03 Fading test.zipContains Quarto R script and according report analysing the fading test measurement of B19-LU-01 with the approaches of Huntley and Lamothe (2001) and Novothny et al. (2010). 

04 Paleodose calculations (third iteration, with fading correction).zipIdentical to folder ‘02’ but as a pre-processing step, the fast-decaying signal components were removed prior analyses, based on the results of the fading test after Novothny et al. (2010). The resulting paleo-doses are those used for age estimations in the according publications.

References

Bøtter-Jensen, L., Andersen, C.E., Duller, G.A.T., Murray, A.S. (2003). Developments in radiation, stimulation and observation facilities in luminescence measurements. Radiation Measurements 37, 535–541. https://doi.org/10.1016/S1350-4487(03)00020-9

Huntley, D.J., Lamothe, M. (2001). Ubiquity of anomalous fading in K-feldspars and the measurement and correction for it in optical dating. Canadian Journal of Earth Sciences 38, 1093–1106. https://doi.org/10.1139/e01-013

Kreutzer, S., Burow, C., Dietze, M., Fuchs, M., Schmidt, C., Fischer, M., Friedrich, J., Mercier, N., Philippe, A., Riedesel, S., Autzen, M., Mittelstraß, D., Gray, H., Galharret, J. (2023). Luminescence: Comprehensive Luminescence Dating Data Analysis. https://doi.org/10.5281/zenodo.10069779

Mittelstraß, D., Kreutzer, S., Schmidt, C. (2022). OSLdecomposition: Signal Component Analysis for Optically Stimulated Luminescence. https://doi.org/10.32614/CRAN.package.OSLdecomposition

Novothny, Á., Frechen, M., Horváth, E., Krbetschek, M., Tsukamoto, S. (2010). Infrared stimulated luminescence and radiofluorescence dating of aeolian sediments from Hungary. Quaternary Geochronology, 5, 114–119.  ttps://doi.org/10.1016/j.quageo.2009.05.002

Thiel, C., Buylaert, J.-P., Murray, A., Terhorst, B., Hofer, I., Tsukamoto, S., Frechen, M. (2011). Luminescence dating of the Stratzing loess profile (Austria) – Testing the potential of an elevated temperature post-IR IRSL protocol. Quaternary International 234, 23–31. https://doi.org/10.1016/j.quaint.2010.05.018
description: Funding

Fieldwork and sampling were funded through institutional core funding of the Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Potsdam, Germany. Sample preparation, measurements and analyses  were  funded through DFG grant no. WE4390/7-1 to S. Wetterich and institutional core funding of the Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Potsdam, Germany.