Both clay and sandstone are unstable rock formations.黏土和砂岩都是不牢固的岩石构造。An aquifer is a water - bearing rock stratum such as sandstone and chalk.地下蓄水层是一些有水的岩石层,如沙岩和白垩岩.Houses in the area are built of sandstone.这个地区的房屋都是用砂岩建...
Results have indicated that major sliding surfaces are happened to pass through colluvium and sandstone.而所评估之潜在滑动面则多通过五弯仔地区之崩积层与砂岩层.A shale formation with sandstone interbedded is also a potential oil bearing formation.以...