A global compilation of glacial 10Be and 26Al data

These pages host a global compilation of published 10Be and 26Al data from glacial samples, with the aim of allowing easy access to data enabling recalculation of exposure ages and cosmogenic data meta-analysis. Data has been compiled from published sources and additional data sources (data directly from the authors, data from another paper, assumptions etc) are recorded.

 

If you find mistakes in the data or if you have more correct / new data: jakob.heyman@gu.se




Data description

The exposure age data is presented in tab-delimited text files with the following 29 columns:

1.
Publication – Primary publication presenting the data with enough detail to enable recalculation.
2.
Sample type – Type of sample such as boulder, bedrock, cobble, pebbles...
3.
Sample ID – Identifier to keep track of repeat measurements of single samples.
4.
Group ID – Identifier to keep track of groups of samples derived from single sites with one deglaciation age.
5.
Sample name – From the original publication (no spaces or special characters).
6.
Latitude – Sample latitude in WGS-84 datum (DD).
7.
Longitude – Sample longitude in WGS-84 datum (DD).
8.
Elevation – Sample elevation (m a.s.l.).
9.
Sample thickness – (cm).
10.
Sample density – (g/cm3). Generally assumed to be 2.65 g/cm3 when not presented in original publication.
11.
Shielding – Topographic/geometric shielding of the sample (unitless).
12.
10Be concentration – (atoms/g).
13.
10Be uncertainty – (atoms/g).
14.
10Be standard – Identifier for 10Be standard material and its assumed isotope ratio. Based on CRONUS standards.
15.
26Al concentration – (atoms/g).
16.
26Al uncertainty – (atoms/g).
17.
26Al standard – Identifier for 26Al standard material and its assumed isotope ratio. Based on CRONUS standards.
18.
Sampling year – Year of sample collection. Generally assumed to be two years before publication if not indicated.
19.
Published 10Be exposure age – (yr).
20.
Published 10Be exposure age uncertainty – (yr).
21.
Published 26Al exposure age – (yr).
22.
Published 26Al exposure age uncertainty – (yr).
23.
10Be exposure age – Recalculated zero erosion 10Be exposure age (yr before sampling).
24.
10Be external uncertainty – External uncertainty (Balco et al. 2008) for the recalculated 10Be exposure age (yr).
25.
10Be internal uncertainty – Internal uncertainty (Balco et al. 2008) for the recalculated 10Be exposure age (yr).
26.
26Al exposure age – Recalculated zero erosion 26Al exposure age (yr before sampling).
27.
26Al external uncertainty – External uncertainty (Balco et al. 2008) for the recalculated 26Al exposure age (yr).
28.
26Al internal uncertainty – Internal uncertainty (Balco et al. 2008) for the recalculated 26Al exposure age (yr).
29.
Extra publication – Extra publication including/describing the data.




Contact: jakob.heyman@gu.se