The Cryosphere
The Cryosphere
TC
Articles | Volume 19, issue 10
Articles | Volume 19, issue 10
https://doi.org/10.5194/tc-19-5095-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-19-5095-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 10
Research article
 | 
27 Oct 2025
Research article |  | 27 Oct 2025

Folding due to anisotropy in ice, from drill-core-scale cloudy bands to km-scale internal reflection horizons

Paul D. Bons, Yuanbang Hu, M.-Gema Llorens, Steven Franke, Nicolas Stoll, Ilka Weikusat, Julien Westhoff, and Yu Zhang

Supplement

https://doi.org/10.5194/tc-19-5095-2025-supplement

Data sets

Visual stratigraphy of the EastGRIP ice core (14 m - 2021 m depth, drilling period 2017-2019) I. Weikusat et al. https://doi.org/10.1594/PANGAEA.925014

Ultra-wideband radar data over the shear margins and along flow lines at the onset region of the Northeast Greenland Ice Stream (NEGIS) S. Franke et al. https://doi.org/10.1594/PANGAEA.928569

Model code and software

Full-field numerical simulation of halite dynamic recrystallization from subgrain rotation to grain boundary migration B. Hao et al. https://doi.org/10.5281/zenodo.10259841

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Short summary
What causes folds in ice layers from the km scale down to the scale visible in the drill core: buckle folding due to variations in viscosity between layers, or the effect of mechanical anisotropy of ice due to an alignment of the crystal-lattice planes? Power spectra of folds in ice, a biotite schist, and numerical simulations show that folding in ice is due to the anisotropy, as the folds are self-similar, meaning that there is no characteristic fold scale that would result from buckle folding.
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