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...

as Laurussia – not to be confused with Laurasia, – the Old Red Continent or the Old Red Sandstone Continent) was a minor supercontinent created in the Devonian...

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

rocks assigned to the Old Red Sandstone and dating from the Devonian period. This thick sedimentary sequence comprises sandstones, mudstones, siltstones...

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

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

early Silurian age can be found on Anglesey. A narrow outcrop of Old Red Sandstone extends from Dulas Bay on the east coast, inland to the northern edge...

that continent, along with the Caledonian orogeny that formed the Old Red Sandstone Continent when the continents Baltica and Laurentia collided in the...

remarks on the Devonian fossil insects from the Rhynie chert beds, Old Red Sandstone. Transactions of the Entomological Society of London 76:65-71 Hirst...

has been called the "Old Red Age", after the red and brown terrestrial deposits known in the United Kingdom as the Old Red Sandstone in which early fossil...

Upper Devonian and Lower Carboniferous breccias, sandstones, and conglomerates of the Old Red Sandstone overlying deeply eroded, near-vertical, greyish...

found at a depth of between 4 and 7 km. Other than a small outlier of Old Red Sandstone, there are no younger solid rocks within the National Park. The ice...

Carrauntoohil is composed of sandstone particles of various sizes which are collectively known as Old Red Sandstone. Old Red Sandstone has a purple-reddish colour...

are formed of Old Red Sandstone, which are small quartz grains laid down over 350 million years ago; unlike most of the Old Red Sandstone around Killarney...

of the Old Red Sandstone found principally along the Moray Firth coast and in the Orkney islands. These rocks are around 400 million years old, and were...

built of large cut stones from the Dingle Beds of the Upper Silurian Old Red Sandstone. Charles Smith, who discovered the edifice in 1756, described the...

uncemented sand, sandstone may be imparted any color by impurities within the minerals, but the most common colors are tan, brown, yellow, red, grey, pink...

Popular Geology. Of these books, perhaps The Old Red Sandstone was the best known. The Old Red Sandstone is still a term used to collectively describe...

changes in the sediments, with only slight compaction. The red hematite that gives red bed sandstones their color is likely formed during eogenesis. Some biochemical...

; Williams, Brian P.J. (eds.), "New Perspectives on the Old Red Sandstone", Old Red Sandstone basins and alluvial systems of Midland Scotland, vol. 180...

50 mi (80 km) long and 10 mi (16 km) wide. Strathmore is underlain by Old Red Sandstone but this is largely obscured by glacial till, sands and gravels deposited...

unconformity at Siccar Point where Famennian age (371–359 Ma) Devonian Old Red Sandstone overlies Llandovery age (444–433 Ma) Silurian greywacke Angular unconformity...

recognized for what they were, as their fossils are common in the Old Red Sandstone formation studied by geologists in the early 19th century. Due to...

megalithic chambered tomb carved out of a titanic block of Devonian Old Red Sandstone located in a steep-sided glaciated valley between the settlements...