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.
All labels observed (10)
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 ⓘ Central Lowlands of Scotland ⓘ
surface form:
Midland Valley of Scotland
Moray Firth Basin ⓘ North Atlantic area ⓘ
surface form:
North Atlantic region
Norway ⓘ Orkney Islands ⓘ Scotland ⓘ Shetland ⓘ
surface form:
Shetland Islands
Svalbard ⓘ
surface form:
Spitsbergen
Wales ⓘ southwest England ⓘ |
| geologicAge |
Paleozoic Era
ⓘ
surface form:
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
self-linksurface differs
ⓘ
surface form:
Old Red Sandstone Continent (Euramerica) basins
|
| thickness | several kilometres in some basins ⓘ |
| typeOfSedimentation | continental ⓘ |
| typicalCement | iron oxide ⓘ |
| underlies | Carboniferous rocks in many areas ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Old Red Sandstone Description of subject: 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.
Referenced by (42)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Old Red Sandstone Continent (Euramerica) basins
subject surface form:
Brecon Beacons
this entity surface form:
The Old Red Sandstone
this entity surface form:
Old Red Sandstone region
this entity surface form:
Devonian Old Red Sandstone
this entity surface form:
Devonian Old Red Sandstone
this entity surface form:
Old Red Sandstone area
this entity surface form:
Torridonian sandstone
this entity surface form:
Old Red Sandstone cliffs
subject surface form:
Black Mountain (Brecon Beacons)
subject surface form:
Midland Valley terrane
this entity surface form:
Old Red Sandstone formations
this entity surface form:
Old Red Sandstone Continent
this entity surface form:
Old Red Sandstone Continent