Salem Limestone
E812901
Salem Limestone is a Mississippian-age sedimentary rock formation widely quarried in the U.S. Midwest, especially Indiana, and prized as a high-quality building stone.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Salem Limestone canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T9643251 — 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: Salem Limestone Context triple: [Harrodsburg Limestone, underlies, Salem Limestone]
-
A.
Mitchell Limestone
Mitchell Limestone is a geologic limestone formation known from the Midwestern United States, recognized for its stratigraphic position and fossil-bearing carbonate rocks.
-
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.
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.
-
D.
Redwall Limestone
Redwall Limestone is a prominent Mississippian-age marine limestone formation best known for forming massive, sheer cliffs in the Grand Canyon region of the southwestern United States.
-
E.
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.
- 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: Salem Limestone Target entity description: Salem Limestone is a Mississippian-age sedimentary rock formation widely quarried in the U.S. Midwest, especially Indiana, and prized as a high-quality building stone.
-
A.
Mitchell Limestone
Mitchell Limestone is a geologic limestone formation known from the Midwestern United States, recognized for its stratigraphic position and fossil-bearing carbonate rocks.
-
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.
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.
-
D.
Redwall Limestone
Redwall Limestone is a prominent Mississippian-age marine limestone formation best known for forming massive, sheer cliffs in the Grand Canyon region of the southwestern United States.
-
E.
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.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
geologic formation
ⓘ
sedimentary rock unit ⓘ |
| alsoKnownAs |
Indiana Limestone
ⓘ
linked to:
Indiana limestone
|
| classification | Mississippian limestone formation ⓘ |
| color |
buff
ⓘ
light gray ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| depositionalEnvironment | shallow marine ⓘ |
| economicUse |
building stone
ⓘ
dimension stone ⓘ |
| engineeringUse | load-bearing masonry ⓘ |
| fossilContent |
brachiopods
ⓘ
bryozoans ⓘ crinoid fragments ⓘ marine fossils ⓘ |
| geologicAge | Mississippian ⓘ |
| geologicPeriod | Carboniferous ⓘ |
| importance | major source of building stone in the United States ⓘ |
| lithology | limestone ⓘ |
| locatedIn | Midwestern United States ⓘ |
| majorQuarryDistrict |
Lawrence County, Indiana
ⓘ
Monroe County, Indiana ⓘ |
| notableRegion | Indiana ⓘ |
| notedFor | consistent physical properties ⓘ |
| overlies | Harrodsburg Limestone ⓘ |
| partOf | Mississippian stratigraphic units of the United States ⓘ |
| porosity | relatively high for limestone ⓘ |
| primaryComposition | calcite ⓘ |
| property |
durability
ⓘ
high workability ⓘ uniform texture ⓘ |
| quarriedIn |
Illinois
ⓘ
Indiana ⓘ Kentucky ⓘ |
| region |
U.S. Midwest
ⓘ
linked to:
Midwestern United States
|
| rockType | carbonate rock ⓘ |
| stratigraphicUnitOf |
Illinois Basin
ⓘ
linked to:
Illinois Basin area
|
| subPeriod | Mississippian ⓘ |
| texture | fine- to medium-grained ⓘ |
| underlies | St. Louis Limestone ⓘ |
| usedFor |
architectural trim
ⓘ
exterior building facades ⓘ monuments ⓘ |
| weatheringBehavior | good resistance in many climates ⓘ |
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: Salem Limestone Description of subject: Salem Limestone is a Mississippian-age sedimentary rock formation widely quarried in the U.S. Midwest, especially Indiana, and prized as a high-quality building stone.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.