Old Red Sandstone

E4810

Old Red Sandstone is a thick sequence of Devonian-age sedimentary rocks, notable for its red coloration and widespread occurrence across parts of Scotland and other regions of the North Atlantic.


Statements (47)
Predicate Object
instanceOf lithostratigraphic unit
sedimentary rock sequence
associatedWithOrogeny Caledonian orogeny
climateIndication semi-arid to arid conditions
containsFossilsOf arthropods
early land vertebrates
early terrestrial plants
fish
depositionalEnvironment alluvial fan
deltaic
fluvial
lacustrine
economicUse aggregate
building stone
foundInRegion Greenland
Ireland
Midland Valley of Scotland
Moray Firth Basin
North Atlantic region
Norway
Orkney Islands
Scotland
Shetland Islands
Spitsbergen
Wales
southwest England
geologicAge Devonian
geologicPeriodEnd Early Carboniferous in some basins
geologicPeriodStart Early Devonian
historicallyStudiedBy Hugh Miller
lithologyIncludes conglomerate
limestone
mudstone
sandstone
siltstone
namedAfter red coloration of its sandstones
notableExposure Brecon Beacons in Wales
Cromarty coast of Scotland
Orkney cliffs
overlies Silurian rocks in many areas
primaryColor red
stratigraphicSignificance key unit for Devonian continental deposits in North Atlantic region
tectonicSetting Old Red Sandstone Continent (Euramerica) basins
thickness several kilometres in some basins
typeOfSedimentation continental
typicalCement iron oxide
underlies Carboniferous rocks in many areas

Referenced by (13)

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