Nugget Sandstone
E930698
Nugget Sandstone is a prominent Jurassic-age sandstone unit of the western United States, best known for its extensive eolian (wind-deposited) dune deposits and its role as a significant reservoir rock in regional geology.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Nugget Sandstone canonical | 2 |
| Page Sandstone | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11516749 — 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: Nugget Sandstone Context triple: [Sundance Formation, overlies, Nugget Sandstone]
-
A.
Mereenie Sandstone
Mereenie Sandstone is a significant geological formation in central Australia known for its hydrocarbon-bearing reservoirs and extensive outcrops within the Amadeus Basin.
-
B.
Lookout Sandstone
Lookout Sandstone is a prominent sedimentary rock formation of the southern Appalachian region, notable for shaping the dramatic cliffs and canyon walls of areas like Little River Canyon.
-
C.
Hermannsburg Sandstone
Hermannsburg Sandstone is a geological rock formation within Australia’s Amadeus Basin, notable for its extensive sandstone deposits that record ancient sedimentary environments.
-
D.
Bunter Sandstone
Bunter Sandstone is a Lower Triassic sedimentary rock formation in central Europe, characterized by its colorful, layered sandstones that form prominent landscapes and are important for regional geology and groundwater reservoirs.
-
E.
Wingate Sandstone
Wingate Sandstone is a prominent Late Triassic sandstone formation of the Colorado Plateau, known for forming towering vertical cliffs and dramatic canyon walls in places like Capitol Reef National Park.
- 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: Nugget Sandstone Target entity description: Nugget Sandstone is a prominent Jurassic-age sandstone unit of the western United States, best known for its extensive eolian (wind-deposited) dune deposits and its role as a significant reservoir rock in regional geology.
-
A.
Mereenie Sandstone
Mereenie Sandstone is a significant geological formation in central Australia known for its hydrocarbon-bearing reservoirs and extensive outcrops within the Amadeus Basin.
-
B.
Lookout Sandstone
Lookout Sandstone is a prominent sedimentary rock formation of the southern Appalachian region, notable for shaping the dramatic cliffs and canyon walls of areas like Little River Canyon.
-
C.
Hermannsburg Sandstone
Hermannsburg Sandstone is a geological rock formation within Australia’s Amadeus Basin, notable for its extensive sandstone deposits that record ancient sedimentary environments.
-
D.
Bunter Sandstone
Bunter Sandstone is a Lower Triassic sedimentary rock formation in central Europe, characterized by its colorful, layered sandstones that form prominent landscapes and are important for regional geology and groundwater reservoirs.
-
E.
Wingate Sandstone
Wingate Sandstone is a prominent Late Triassic sandstone formation of the Colorado Plateau, known for forming towering vertical cliffs and dramatic canyon walls in places like Capitol Reef National Park.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
geologic formation
ⓘ
sandstone unit ⓘ |
| color | light-colored sandstone ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| depositionalSetting | erg (sand sea) ⓘ |
| diageneticFeatures |
iron-oxide staining in some intervals
ⓘ
silica cementation in places ⓘ |
| economicImportance |
groundwater aquifer in some basins
ⓘ
hydrocarbon reservoir rock ⓘ |
| geologicAge | Jurassic ⓘ |
| knownFor |
extensive eolian dune deposits
ⓘ
high-porosity reservoir characteristics ⓘ large-scale cross-bedding ⓘ |
| lithology | sandstone ⓘ |
| locatedIn | western United States ⓘ |
| overlies | older Paleozoic and Triassic units in many areas ⓘ |
| porosityType | primary intergranular porosity ⓘ |
| primaryDepositionalEnvironment | eolian ⓘ |
| primaryDepositionalProcess | wind-deposited dune systems ⓘ |
| regionalSignificance | major Jurassic eolian sandstone of the western interior ⓘ |
| researchImportance |
analog for subsurface eolian reservoirs
ⓘ
key unit for studying ancient eolian systems ⓘ |
| reservoirQuality | generally good to excellent ⓘ |
| sedimentaryStructure |
high-angle cross-beds
ⓘ
large-scale cross-stratification ⓘ |
| stratigraphicUnitOf | Mesozoic stratigraphy of the western United States ⓘ |
| tectonostratigraphicContext | pre-foreland basin sedimentation in the western interior ⓘ |
| typicalGrainSize | fine- to medium-grained ⓘ |
| underlies | younger Jurassic and Cretaceous formations in many areas ⓘ |
| usedIn | regional stratigraphic correlation ⓘ |
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: Nugget Sandstone Description of subject: Nugget Sandstone is a prominent Jurassic-age sandstone unit of the western United States, best known for its extensive eolian (wind-deposited) dune deposits and its role as a significant reservoir rock in regional geology.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Nugget Sandstone