exploration in a sandstone rock with a slope layer and intermediate banks of conglomerate, deposited close to the coast with

background bakal banks cemented clastic clastite close coast conglomerate deposited diagenesis diagenetic dioxide exploration face geology gravel hard inclined intermediate jebal kamira layer layered mountain mountains outcrop proximity putty pyramid pyramids quarry quartz quartzite rock rocks sand sandstone sediment sedimentary silicon slope solidified stone stratification sudan wall