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Old Red Sandstone information


Old Red Sandstone
Stratigraphic range: Late Silurian – earliest Carboniferous 419–358 Ma
PreꞒ
O
S
D
C
P
T
J
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Pg
N
Folded Old Red Sandstone rock formation at St Ann's Head in Pembrokeshire, Wales
TypeSupergroup
Sub-unitsSee text
ThicknessMore than 4 km (2.5 mi) (Shetland)
Lithology
PrimarySandstone
OtherConglomerate, shale, mudstone, siltstone, limestone
Location
RegionNorth Atlantic
CountryCanada, Greenland, Ireland, Norway, United Kingdom
Extent700 km (430 mi)[1]
Hutton's angular unconformity at Siccar Point where 370-million-year-old Devonian Old Red Sandstone overlies 435-million-year-old Silurian greywacke.[2]

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 Britain, Ireland and Norway, and in the west along the eastern seaboard of North America. It also extends northwards into Greenland and Svalbard.[3] These areas were a part of the paleocontinent of Euramerica (Laurussia). In Britain it is a lithostratigraphic unit (a sequence of rock strata) to which stratigraphers accord supergroup status[4] and which is of considerable importance to early paleontology. The presence of Old in the name is to distinguish the sequence from the younger New Red Sandstone which also occurs widely throughout Britain.

  1. ^ Cite error: The named reference Barclay was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference FieldExcursion was invoked but never defined (see the help page).
  3. ^ Friend, P.F. and Williams, B.P.J. (eds) 2000 New Perspectives on the Old Red Sandstone. Geological Society, London, Special publications 180 p1,35
  4. ^ http://www.bgs.ac.uk/Lexicon/lexicon.cfm?pub=ORS entry in BGS on-line rock lexicon

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Old Red Sandstone

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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....

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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...

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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...

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

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Orkney islands in northern Scotland is dominated by the Devonian Old Red Sandstone (ORS). In the southwestern part of Mainland, this sequence can be...

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

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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...

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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...

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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...

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

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Devonian

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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...

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

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Gallarus Oratory

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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...

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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...

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Carrauntoohil

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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...

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Pterichthyodes

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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...

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Hugh Miller

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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...

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Rhynia

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doi:10.1016/0034-6667(80)90057-3. Kidston, R.; Lang, W.H. (1917). "On Old Red Sandstone plants showing structure from the Rhynie chert bed, Aberdeenshire...

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Dundee

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

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Great Unconformity

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

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county boundary west of Kielder Water. Within the Border Group the Fell Sandstone Formation reaches up to 370m thickness and is locally prominent around...

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Westminster around 1300, has been confirmed by geologists to be a "lower Old Red Sandstone", quarried in the vicinity of Scone, and thus has not been transported...

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