Fig. 7From: Taya Caves, a Buddhist marvel hidden in underground Japan: stone properties, deterioration, and environmental settingGypsum crusts deteriorating the carvings in the Turtle hall. Their chemical and mineralogical composition and stratigraphy are showed by the SEM–EDS observations and X-ray mappings, and the representative XRD pattern (Ab  albite, Cal calcite, Gp gypsum, Qz quartz)Back to article page