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Heritage Science
Fig. 13 | Heritage Science

Fig. 13

From: Sustainability problems of the Giza pyramids

Fig. 13

a SEM micrographs of limestone of the backing limestone blocks of Chephren pyramid. Amorphous silica is participated on the limestone surfaces. b EDX spectrum and micro analysis of the previous image of the backing limestone grains from blocks of Chephren pyramid. A strong Calcium signal is observed. c EDX spectrum and micro analysis of backing limestone blocks of Chephren pyramid. Individual calcite grains are approximately 2.5 microns with smooth intergrown blocks with open pits

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