Old Red Sandstone, abbreviated ORS, is an assemblage of rocks in the North Atlantic region largely of Devonian age. It extends in the east across Great...

Red Sandstone may refer to: Sandstone appearing red due to the inclusion of iron oxides (hematite) Old Red Sandstone, a British lithostratigraphic unit...

this continent is the Old Red Continent or Old Red Sandstone Continent, in reference to abundant red beds of the Old Red Sandstone during the Devonian....

The New Red Sandstone, chiefly in British geology, is composed of beds of red sandstone and associated rocks laid down throughout the Permian (300 million...

western side of Hoy lead to rapid erosion of the coast. The Old Man of Hoy is a red sandstone stack, perched on a plinth of basalt rock, and one of the...

change in the dip of the Old Red Sandstone from around 20° to near-vertical and subsequently exposes the Old Red Sandstone basement. It is currently...

the Devonian Old Red Sandstone facies of Europe. Primary red beds may be formed by the erosion and redeposition of red soils or older red beds, but a fundamental...

characterised by younger Devonian rocks which are assigned to the Old Red Sandstone. A variety of igneous rocks intrude the Dalradian sequence, including...

cross-bedded sandstones of the Eask Sandstone Formation, dating from the Devonian period and traditionally referred to as the Old Red Sandstone. Dunmore Head...

walls and slate fencing. The Old Red Sandstone of the Anglo-Welsh Basin comprises a variety of Devonian age sandstones (alongside other rocks unsuitable...