برج خليفة - An Overview
Retrieved 24 September 2016. Medium dense to incredibly free granular silty sands (Marine Deposits) are underlain by successions of extremely weak to weak sandstone interbedded with quite weakly cemented sand, gypsiferous good-grained sandstone/siltstone, and weak to moderately weak conglomerate/calcisiltite. ^ولمعرفة مزيدٍ من الم�