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May 8, 2026npj Heritage ScienceOpen Access

Over fifteen centuries of weathering: mineralogical identification and decay assessment of the Tāq-e Bostān Sasanian rock reliefs

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Authors

ASAtefeh ShekoftehSBSepehr BahadoriMCMohsen Charesaz

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Overview

Assesses mineral decay in Tāq-e Bostān, highlighting challenges for effective conservation strategies.

Key Points

  • To evaluate mineralogical changes and weathering effects on the Tāq-e Bostān rock reliefs over time.
  • Conducted petrographic analysis using thin sections
  • Employed XRF, XRD, and SEM–EDS to analyze lithology
  • Investigated the impact of restoration materials on decay processes
  • Identified progressive deterioration including detachment and cracking
  • Found that modern restoration mortars promote calcium leaching and gypsum formation
  • Discovered stable biomineral films from orange oxalate patinas that contribute to preservation

Cite This Study

Shekofteh et al. (2026) studied this question.

synapsesocial.com/papers/69fd7fcdbfa21ec5bbf086d6https://doi.org/10.1038/s40494-026-02593-6
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