Mitchell Limestone
E235714
Mitchell Limestone is a geologic limestone formation known from the Midwestern United States, recognized for its stratigraphic position and fossil-bearing carbonate rocks.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Mitchell Limestone canonical | 1 |
| Spergen Limestone | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2065994 — 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: Mitchell Limestone Context triple: [Bedford limestone, underlies, Mitchell Limestone]
-
A.
Anston limestone
Anston limestone is a durable, fine-grained building stone from Anston in South Yorkshire, England, historically quarried for major 19th-century architectural projects.
-
B.
Harrodsburg Limestone
Harrodsburg Limestone is a Mississippian-age carbonate rock formation in the central United States, notable for its fossil-rich marine deposits and use as a building stone.
-
C.
Tura limestone
Tura limestone is a fine white Egyptian limestone historically prized for its high quality and used as the outer casing stone for major monuments such as the Great Pyramid of Giza.
-
D.
Lioz limestone
Lioz limestone is a dense, decorative Portuguese limestone widely used in historic architecture and monuments, especially in and around Lisbon.
-
E.
Bedford limestone
Bedford limestone is a high-quality, fine-grained building stone from southern Indiana widely used in prominent architectural landmarks across the United States.
- 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: Mitchell Limestone Target entity description: Mitchell Limestone is a geologic limestone formation known from the Midwestern United States, recognized for its stratigraphic position and fossil-bearing carbonate rocks.
-
A.
Anston limestone
Anston limestone is a durable, fine-grained building stone from Anston in South Yorkshire, England, historically quarried for major 19th-century architectural projects.
-
B.
Harrodsburg Limestone
Harrodsburg Limestone is a Mississippian-age carbonate rock formation in the central United States, notable for its fossil-rich marine deposits and use as a building stone.
-
C.
Tura limestone
Tura limestone is a fine white Egyptian limestone historically prized for its high quality and used as the outer casing stone for major monuments such as the Great Pyramid of Giza.
-
D.
Lioz limestone
Lioz limestone is a dense, decorative Portuguese limestone widely used in historic architecture and monuments, especially in and around Lisbon.
-
E.
Bedford limestone
Bedford limestone is a high-quality, fine-grained building stone from southern Indiana widely used in prominent architectural landmarks across the United States.
- F. None of above. chosen
Statements (24)
| Predicate | Object |
|---|---|
| instanceOf |
geologic formation
ⓘ
limestone formation ⓘ stratigraphic unit ⓘ |
| composedPrimarilyOf | calcium carbonate ⓘ |
| contains |
invertebrate fossils
ⓘ
marine fossils ⓘ |
| containsFossils | yes ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| depositionalEnvironment | marine ⓘ |
| fossilBearing | true ⓘ |
| geologicMaterial | carbonate sedimentary rock ⓘ |
| hasEconomicUse |
construction aggregate (local)
ⓘ
dimension stone (local) ⓘ |
| hasSedimentaryStructure | bedded limestone ⓘ |
| hasStratigraphicPosition | defined within regional stratigraphic column of the Midwestern United States ⓘ |
| isPartOf | regional Paleozoic stratigraphy of the Midwestern United States ⓘ |
| lithology | limestone ⓘ |
| region | Midwestern United States ⓘ |
| rockType | carbonate rock ⓘ |
| stratigraphicRole | formation ⓘ |
| studiedInDiscipline |
paleontology
ⓘ
sedimentary geology ⓘ stratigraphy ⓘ |
| usedIn | 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: Mitchell Limestone Description of subject: Mitchell Limestone is a geologic limestone formation known from the Midwestern United States, recognized for its stratigraphic position and fossil-bearing carbonate rocks.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Mitchell Limestone