Skip to main content

Research Repository

Advanced Search

iceTEA: Tools for plotting and analysing cosmogenic-nuclide surface-exposure data from former ice margins

Jones, R.S.; Small, D.; Cahill, N.; Bentley, M.J.; Whitehouse, P.L.

iceTEA: Tools for plotting and analysing cosmogenic-nuclide surface-exposure data from former ice margins Thumbnail


Authors

R.S. Jones

N. Cahill



Abstract

Cosmogenic-nuclide surface-exposure data provide important constraints on the thickness, extent and behaviour of ice masses in the geological past. A number of online calculators provide the cosmogenic nuclide community with a means of easily calculating surface-exposure ages. Here we provide a platform for plotting and analysing such data. This paper describes a suite of freely accessible numerical tools for visualising, evaluating and correcting surface-exposure data that are used to reconstruct past glacier and ice sheet geometries. iceTEA (Tools for Exposure Ages) is available as an online interface (http://ice-tea.org) and as MATLAB© code. There are 8 tools, which provide the following functionality: 1) calculate exposure ages from 10Be and 26Al data, 2) plot exposure ages as kernel density estimates and as a horizontal or vertical transect, 3) identify and remove outliers within a dataset, 4) plot nuclide concentrations on a two-isotope diagram and as a function of depth, 5) correct exposure ages for cover of the rock surface, 6) correct ages for changes in relative elevation through time, and estimate 7) average and 8) continuous rates of ice margin retreat or thinning. Three of the tools (1, 5 and 6) perform exposure age calculations, which are based on the framework of CRONUScalc. Results are available as printed text, tables and/or raster (.png) and vector (.eps) graphics files, depending on the tool. These tools are intended to enable users to evaluate complex exposure histories, assess the reliability of exposure ages, explore potential age corrections, and better analyse and understand spatial and temporal patterns within their data.

Citation

Jones, R., Small, D., Cahill, N., Bentley, M., & Whitehouse, P. (2019). iceTEA: Tools for plotting and analysing cosmogenic-nuclide surface-exposure data from former ice margins. Quaternary Geochronology, 51, 72-86. https://doi.org/10.1016/j.quageo.2019.01.001

Journal Article Type Article
Acceptance Date Jan 10, 2019
Online Publication Date Jan 21, 2019
Publication Date Apr 30, 2019
Deposit Date Jan 22, 2019
Publicly Available Date Jan 3, 2024
Journal Quaternary Geochronology
Print ISSN 1871-1014
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 51
Pages 72-86
DOI https://doi.org/10.1016/j.quageo.2019.01.001
Public URL https://durham-repository.worktribe.com/output/1339371

Files






You might also like



Downloadable Citations