Figure 4

Optical micrograph under cross-polarized light of reworked welded ash-tuff belonging to the basal section of Saiq Formation (Saiq Plateau). Qz=Quartz, Hyd. Quartz= Hydrothermal Quartz, Cb= Carbonates, Chl=Chlorite.

Optical micrograph under cross-polarized light of reworked welded ash-tuff belonging to the basal section of Saiq Formation (Saiq Plateau). Qz=Quartz, Hyd. Quartz= Hydrothermal Quartz, Cb= Carbonates, Chl=Chlorite.