Sandstone is a sedimentary rock. These outcrops are of Triassic age over 206 Million years old.
Sandstone contains fragments which are between 2 millimetres and 0.5 millimetres in diameter. (Larger than that are breccias and conglomerates and smaller are clays, mudstones and shales) Grains of quartz are the most common fragments in sandstones. Mudcracks and ripple marks in the Triassic sandstones indicate that they were laid down in shallow waters. Scrabo in County Down contains good examples of this sandstone.
|Sandstone data||Sandstone in use||Sandstone sample|