What question did this study set out to answer?

The aim is to understand the weathering degradation of sandstone in the Shigongsi Grottoes and its underlying mechanisms.

August 1, 2026npj Heritage ScienceOpen Access

The weathering mechanism of sandstone in Shigongsi Grottoes excavated at Northern Wei Dynasty, Huating, Gansu Province, China

View Full Paper

Ask AI

Bookmark

The aim is to understand the weathering degradation of sandstone in the Shigongsi Grottoes and its underlying mechanisms.
Micro-analysis techniques used include Optical Microscopy, SEM-EDS, and Raman spectroscopy.
Bulk characterization employed XRD and Ion Chromatography to assess material changes.
Chemical alterations were monitored to identify a ternary weathering mechanism involving biotite, calcite, and feldspar.
Acidic fluids lead to biotite dissolution, resulting in kaolinite and hematite formation.
Dolomitization of calcite occurs, confirmed by increased Raman peaks and causing volume shrinkage.
Feldspar shows honeycomb-like alterations, indicating kaolinization and associated volume expansion.

No takes yet. Share an insight, caveat, or question.

Randomized trial examines sandstone weathering in Shigongsi Grottoes, suggesting new conservation approaches.

Luo et al. (2026) studied this question.

View Full Paper

Ask AI

Bookmark