@article{112,
  keywords = {Fluid inclusion, Halite, Namakier, Pressure-solution creep, Second phases, Viscosity},
  author = {Prokop Z{\'a}vada and G. Desbois and J.L. Urai and Karel Schulmann and M. Rahmati and Ondrej Lexa and U. Wollenberg},
  title = {Impact of solid second phases on deformation mechanisms of naturally deformed salt rocks (Kuh-e-Namak, Dashti, Iran) and rheological stratification of the Hormuz Salt Formation},
  abstract = {Abstract Viscosity contrasts displayed in flow structures of a mountain namakier (Kuh-e-Namak - Dashti), between {\textquoteleft}weak{\textquoteright} second phase bearing rock salt and {\textquoteleft}strong{\textquoteright} pure rock salt types are studied for deformation mechanisms using detailed quantitative microstructural study. While the solid inclusions rich ({\textquotedblleft}dirty{\textquotedblright}) rock salts contain disaggregated siltstone and dolomite interlayers, {\textquotedblleft}clean{\textquotedblright} salts reveal microscopic hematite and remnants of abundant fluid inclusions in non-recrystallized cores of porphyroclasts. Although the flow in both, the recrystallized {\textquotedblleft}dirty{\textquotedblright} and {\textquotedblleft}clean{\textquotedblright} salt types is accommodated by combined mechanisms of pressure-solution creep (PS), grain boundary sliding (GBS), transgranular microcracking and dislocation creep accommodated grain boundary migration (GBM), their viscosity contrasts observed in the field outcrops are explained by: 1) enhanced ductility of {\textquotedblleft}dirty{\textquotedblright} salts due to increased diffusion rates along the solid inclusion-halite contacts than along halite{\textendash}halite contacts, and 2) slow rates of intergranular diffusion due to dissolved iron and inhibited dislocation creep due to hematite inclusions for {\textquotedblleft}clean{\textquotedblright} salt types Rheological contrasts inferred by microstructural analysis between both salt rock classes apply in general for the {\textquotedblleft}dirty{\textquotedblright} salt forming Lower Hormuz and the {\textquotedblleft}clean{\textquotedblright} salt forming the Upper Hormuz of the Hormuz Formation and imply strain rate gradients or decoupling along horizons of mobilized salt types of different composition and microstructure.},
  year = {2015},
  booktitle = {Journal of Structural Geology},
  journal = {Journal of Structural Geology},
  series = {Journal of Structural Geology},
  volume = {74},
  pages = {117-144},
  issn = {0191-8141},
  url = {http://www.sciencedirect.com/science/article/pii/S0191814115000413},
  doi = {http://dx.doi.org/10.1016/j.jsg.2015.02.009},
}