Articles | Volume 12, issue 9
Solid Earth, 12, 2041–2065, 2021
https://doi.org/10.5194/se-12-2041-2021
Solid Earth, 12, 2041–2065, 2021
https://doi.org/10.5194/se-12-2041-2021
Research article
 | Highlight paper
09 Sep 2021
Research article  | Highlight paper | 09 Sep 2021

Rheological stratification in impure rock salt during long-term creep: morphology, microstructure, and numerical models of multilayer folds in the Ocnele Mari salt mine, Romania

Marta Adamuszek et al.

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Cited articles

Adamuszek, M. and Dabrowski, M.: Sinking of a fragmented anhydrite layer in rock salt, Tectonophysics, 20, 40–59, https://doi.org/10.1016/j.tecto.2019.05.018, 2019. 
Adamuszek, M., Schmid, D. W., and Dabrowski, M.: Fold geometry toolbox – Automated determination of fold shae, shortening, and material properties, J. Struct. Geol., 33, 1406–1416, https://doi.org/10.1016/j.jsg.2011.06.003, 2011. 
Adamuszek, M., Dabrowski, M., Schmalholz, S. M., Urai, J. L., and Raith, A.: Estimating Rheological Parameters of Anhydrite from Folded Evaporite sequences: Implications for Internal Dynamics of Salt Structure, in: EGU General Assembly Conference Abstracts, Austria, 9954, 2015. 
Adamuszek, M., Dabrowski, M., and Schmid, D. W.: Folder: A numerical tool to simulate the development of structures in layered media, J. Struct. Geol., 84, 85–101, https://doi.org/10.1016/j.jsg.2016.01.001, 2016. 
Barker, C. E. and Pawlewicz, M. J.: Calculation of Vitrinite Reflectance from Thermal Histories and Peak Temperatures, in: Vitrinite Reflectance as a Maturity Parameter, Am. Chem. Soc., 570, 216–229, https://doi.org/10.1021/bk-1994-0570.ch014, 1994. 
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Short summary
We analyse folded multilayer sequences in the Ocnele Mari salt mine (Romania) to gain insight into the long-term rheological behaviour of rock salt. Our results indicate the large role of even a small number of impurities in the rock salt for its effective mechanical behaviour. We demonstrate how the development of folds that occur at various scales can be used to constrain the viscosity ratio in the deformed multilayer sequence.