Old Red Sandstone

E4810

lithostratigraphic unit sedimentary rock sequence

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.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

AI illustration

All labels observed (14)

Label	Occurrences
Old Red Sandstone canonical	53
Old Red Sandstone cliffs	3
Devonian Old Red Sandstone	2
Old Red Sandstone Continent	2
Old Red Sandstone basins	2
Old Red Sandstone Continent (Euramerica) basins	1
Old Red Sandstone area	1
Old Red Sandstone basin	1
Old Red Sandstone formations	1
Old Red Sandstone mountains	1
Old Red Sandstone of Scotland	1
Old Red Sandstone region	1
The Old Red Sandstone	1
Torridonian sandstone	1

How this entity was disambiguated

This entity first appeared as the object of triple T69485 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Old Red Sandstone
Context triple: [Central Lowlands of Scotland, geology, Old Red Sandstone]

A. Aquia Creek sandstone
Aquia Creek sandstone is a historically significant building stone quarried in Virginia, widely known for its use in early U.S. federal architecture including the White House and the Capitol.
B. Colorado Yule marble
Colorado Yule marble is a high-quality, pure white marble from Colorado renowned for its use in major U.S. monuments and buildings.
C. Rosendale cement
Rosendale cement is a natural hydraulic cement historically prized in the 19th century United States for its durability and use in major infrastructure projects.
D. Cretaceous
The Cretaceous was the final period of the Mesozoic Era, marked by high sea levels, diverse dinosaurs, and ending with the mass extinction that wiped them out about 66 million years ago.
E. Boric
Boric is the surname of Gabriel Boric, the Chilean politician who became one of the world’s youngest heads of state when he was elected President of Chile.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Old Red Sandstone
Target entity description: 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.

A. Aquia Creek sandstone
Aquia Creek sandstone is a historically significant building stone quarried in Virginia, widely known for its use in early U.S. federal architecture including the White House and the Capitol.
B. Colorado Yule marble
Colorado Yule marble is a high-quality, pure white marble from Colorado renowned for its use in major U.S. monuments and buildings.
C. Rosendale cement
Rosendale cement is a natural hydraulic cement historically prized in the 19th century United States for its durability and use in major infrastructure projects.
D. Cretaceous
The Cretaceous was the final period of the Mesozoic Era, marked by high sea levels, diverse dinosaurs, and ending with the mass extinction that wiped them out about 66 million years ago.
E. Boric
Boric is the surname of Gabriel Boric, the Chilean politician who became one of the world’s youngest heads of state when he was elected President of Chile.
F. None of above. chosen

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 ⓘ linked to: Central Lowlands of Scotland Moray Firth Basin ⓘ North Atlantic region ⓘ linked to: North Atlantic area Norway ⓘ Orkney Islands ⓘ Scotland ⓘ Shetland Islands ⓘ linked to: Shetland Spitsbergen ⓘ linked to: Svalbard Wales ⓘ southwest England ⓘ
geologicAge	Devonian ⓘ linked to: Paleozoic Era
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 ⓘ linked to: Old Red Sandstone
thickness	several kilometres in some basins ⓘ
typeOfSedimentation	continental ⓘ
typicalCement	iron oxide ⓘ
underlies	Carboniferous rocks in many areas ⓘ

How these facts were elicited

Referenced by (71)

Full triples — surface form annotated when it differs from this entity's canonical label.

Central Lowlands of Scotland → geology → Old Red Sandstone ⓘ

Old Red Sandstone → tectonicSetting → Old Red Sandstone Continent (Euramerica) basins ⓘ

linked to: Old Red Sandstone

Seaton Cliffs → rockType → Old Red Sandstone ⓘ

Lomond Hills → geologicalOrigin → Old Red Sandstone ⓘ

Brecon Beacons → geology → Old Red Sandstone ⓘ

subject linked to: Brecon Beacons in Wales

Dalradian Supergroup → underlies → Old Red Sandstone ⓘ

Cromarty coast of Scotland → rockType → Old Red Sandstone ⓘ

Stonehaven coast → hasGeology → Old Red Sandstone ⓘ

Hugh Miller → notableWork → The Old Red Sandstone ⓘ

linked to: Old Red Sandstone

Rackwick → geology → Old Red Sandstone cliffs ⓘ

linked to: Old Red Sandstone

Old Man of Hoy → material → Old Red Sandstone ⓘ

Ward Hill → geologicalContext → Old Red Sandstone region ⓘ

linked to: Old Red Sandstone

Cheviot Hills → geology → Old Red Sandstone ⓘ

Siccar Point unconformity → hasRockType → Devonian Old Red Sandstone ⓘ

linked to: Old Red Sandstone

Siccar Point unconformity → overlainBy → Devonian Old Red Sandstone ⓘ

linked to: Old Red Sandstone

Sidlaw Hills → geology → Old Red Sandstone ⓘ

Rendall Hills → geology → Old Red Sandstone ⓘ

Corn Du → geology → Old Red Sandstone ⓘ

Fan y Big → geology → Old Red Sandstone ⓘ

Wideford Hill → geologicalContext → Old Red Sandstone area ⓘ

linked to: Old Red Sandstone

Raasay → hasGeologicalFeature → Torridonian sandstone ⓘ

linked to: Old Red Sandstone

Marwick Head cliffs → geology → Old Red Sandstone ⓘ

Yesnaby cliffs → composedOf → Old Red Sandstone ⓘ

Fforest Fawr → geology → Old Red Sandstone ⓘ

Pen y Fan → geology → Old Red Sandstone ⓘ

Bay of Birsay → hasGeology → Old Red Sandstone cliffs ⓘ

linked to: Old Red Sandstone

Black Mountains → geology → Old Red Sandstone ⓘ

Campsie Fells → geology → Old Red Sandstone ⓘ

Black Mountain (Brecon Beacons) → hasGeology → Old Red Sandstone ⓘ

subject linked to: Black Mountain

Skokholm Island → geology → Old Red Sandstone ⓘ

Midland Valley terrane → contains → Old Red Sandstone ⓘ

subject linked to: Midland Valley terrane (locally, structurally)

Westray → hasGeologicalFeature → Old Red Sandstone formations ⓘ

linked to: Old Red Sandstone

Monnow Bridge → material → Old Red Sandstone ⓘ

Berwickshire Coast → geology → Old Red Sandstone ⓘ

Hoy Hills → geology → Old Red Sandstone ⓘ

subject linked to: Hoy hills

Duncansby Head → geology → Old Red Sandstone ⓘ

Sugar Loaf → geologicalType → Old Red Sandstone ⓘ

Blorenge → geology → Old Red Sandstone ⓘ

Laurussia → overlappedWith → Old Red Sandstone Continent ⓘ

linked to: Old Red Sandstone

Euramerica → alsoKnownAs → Old Red Sandstone Continent ⓘ

linked to: Old Red Sandstone

Euramerica → associatedWithSedimentaryRecord → Old Red Sandstone ⓘ

Dumyat → geology → Old Red Sandstone ⓘ

Ben Cleuch → geology → Old Red Sandstone ⓘ

Sidlaws → geology → Old Red Sandstone ⓘ

Cefn Bryn → material → Old Red Sandstone ⓘ

Cefn Bryn → geologicalComposition → Old Red Sandstone ⓘ

subject linked to: Cefn Bryn ridge

Orkney Mainland west coast → geology → Old Red Sandstone ⓘ

Central Beacons → geologicalEra → Old Red Sandstone ⓘ

Yesnaby coastal area → hasGeologicalFeature → Old Red Sandstone cliffs ⓘ

linked to: Old Red Sandstone

Yesnaby Castle → composedOf → Old Red Sandstone ⓘ

subject linked to: Yesnaby Castle sea stack

All labels observed (14)

How this entity was disambiguated Show

Statements (47)

How these facts were elicited Show

Referenced by (71)

How this entity was disambiguated

How these facts were elicited