Kaibab Limestone
E133370
Kaibab Limestone is a prominent Permian-age sedimentary rock layer that forms the resistant caprock of the Grand Canyon and many other cliffs and plateaus across the Colorado Plateau.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Kaibab Limestone canonical | 5 |
| Kaibab Formation | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T1128590 — 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: Kaibab Limestone Context triple: [Colorado Plateau, notableRockFormations, Kaibab Limestone]
-
A.
Navajo Sandstone
Navajo Sandstone is a massive, pale to reddish Jurassic-age sandstone formation on the Colorado Plateau, renowned for its sweeping cross-bedded cliffs and iconic desert landscapes.
-
B.
Kayenta Formation
The Kayenta Formation is an Early Jurassic sandstone and siltstone rock unit on the Colorado Plateau, renowned for its distinctive red cliffs and important dinosaur fossil trackways.
-
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.
Grand Staircase
The Grand Staircase is an ornate central staircase within the Massachusetts State House, known for its impressive architecture and ceremonial significance.
-
E.
Mogollon Rim
The Mogollon Rim is a prominent escarpment in central Arizona that forms the southern edge of the Colorado Plateau, known for its dramatic cliffs, forests, and expansive views.
- 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: Kaibab Limestone Target entity description: Kaibab Limestone is a prominent Permian-age sedimentary rock layer that forms the resistant caprock of the Grand Canyon and many other cliffs and plateaus across the Colorado Plateau.
-
A.
Navajo Sandstone
Navajo Sandstone is a massive, pale to reddish Jurassic-age sandstone formation on the Colorado Plateau, renowned for its sweeping cross-bedded cliffs and iconic desert landscapes.
-
B.
Kayenta Formation
The Kayenta Formation is an Early Jurassic sandstone and siltstone rock unit on the Colorado Plateau, renowned for its distinctive red cliffs and important dinosaur fossil trackways.
-
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.
Grand Staircase
The Grand Staircase is an ornate central staircase within the Massachusetts State House, known for its impressive architecture and ceremonial significance.
-
E.
Mogollon Rim
The Mogollon Rim is a prominent escarpment in central Arizona that forms the southern edge of the Colorado Plateau, known for its dramatic cliffs, forests, and expansive views.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
geologic formation
ⓘ
sedimentary rock unit ⓘ |
| ageRange | late Early Permian to early Late Permian ⓘ |
| color |
buff
ⓘ
light gray ⓘ |
| contains |
chert nodules
ⓘ
dolomitic beds ⓘ fossil marine invertebrates ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| depositionalEnvironment |
continental shelf
ⓘ
shallow marine ⓘ |
| exposedAt |
Bryce Canyon region
ⓘ
linked to:
Bryce Canyon National Park
Grand Canyon National Park ⓘ Zion National Park region ⓘ
linked to:
Zion National Park
|
| forms |
caprock of the Grand Canyon
ⓘ
cliffs ⓘ plateau surfaces ⓘ |
| formsPartOf | Southwestern United States stratigraphic column ⓘ |
| formsTopOf | Paleozoic section in Grand Canyon ⓘ |
| fossilContent |
brachiopods
ⓘ
bryozoans ⓘ echinoderms ⓘ mollusks ⓘ |
| geologicAge | Permian ⓘ |
| geologicGroup |
Kaibab Formation
ⓘ
linked to:
Kaibab Limestone
|
| isResistant | yes ⓘ |
| lithology | limestone ⓘ |
| locatedIn |
Arizona
ⓘ
Colorado Plateau ⓘ Nevada ⓘ Utah ⓘ |
| namedFor | Kaibab Plateau ⓘ |
| overlies | Coconino Sandstone ⓘ |
| partOf | Colorado Plateau stratigraphy ⓘ |
| period |
Permian period
ⓘ
linked to:
Permian Period
|
| porosity | locally significant for groundwater flow ⓘ |
| primaryComposition | calcium carbonate ⓘ |
| regionallyExtensive | yes ⓘ |
| resistanceToErosion | high ⓘ |
| stratigraphicUnitRank | formation ⓘ |
| tectonicSettingDuringDeposition | passive continental margin ⓘ |
| thickness | varies from tens to over 300 feet ⓘ |
| underlies | Moenkopi Formation ⓘ |
| usedAs | marker bed in regional stratigraphy ⓘ |
| usedFor | geologic mapping ⓘ |
| weatheringCharacteristic | forms cliffs and benches ⓘ |
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: Kaibab Limestone Description of subject: Kaibab Limestone is a prominent Permian-age sedimentary rock layer that forms the resistant caprock of the Grand Canyon and many other cliffs and plateaus across the Colorado Plateau.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Kaibab Limestone
linked to: Kaibab Limestone
linked to: Kaibab Limestone
linked to: Kaibab Limestone