Chinle Formation
E208683
The Chinle Formation is a Late Triassic geologic formation in the southwestern United States, renowned for its colorful badlands, rich fossil beds, and extensive petrified wood deposits.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Chinle Formation canonical | 4 |
| Blue Mesa Member of the Chinle Formation | 1 |
| Chinle Formation exposures | 1 |
| Chinle Formation, southwestern United States | 1 |
| Chinle Group | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1873279 — 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: Chinle Formation Context triple: [Petrified Forest National Park, contains, Chinle Formation]
-
A.
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.
-
B.
Kaibab Limestone
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.
-
C.
Morrison Formation
The Morrison Formation is a vast Late Jurassic sedimentary rock formation in the western United States renowned for its exceptionally rich assemblage of dinosaur fossils, including iconic sauropods and theropods.
-
D.
Holston Formation
The Holston Formation is a geologic unit in eastern Tennessee renowned for its high-quality crystalline limestone commonly marketed as Tennessee marble and widely used in prominent architectural projects.
-
E.
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.
- 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: Chinle Formation Target entity description: The Chinle Formation is a Late Triassic geologic formation in the southwestern United States, renowned for its colorful badlands, rich fossil beds, and extensive petrified wood deposits.
-
A.
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.
-
B.
Kaibab Limestone
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.
-
C.
Morrison Formation
The Morrison Formation is a vast Late Jurassic sedimentary rock formation in the western United States renowned for its exceptionally rich assemblage of dinosaur fossils, including iconic sauropods and theropods.
-
D.
Holston Formation
The Holston Formation is a geologic unit in eastern Tennessee renowned for its high-quality crystalline limestone commonly marketed as Tennessee marble and widely used in prominent architectural projects.
-
E.
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.
- F. None of above. chosen
Statements (60)
| Predicate | Object |
|---|---|
| instanceOf |
geologic formation
ⓘ
stratigraphic unit ⓘ |
| age |
Carnian
ⓘ
Norian ⓘ |
| color |
purple
ⓘ
variegated red ⓘ white ⓘ yellow ⓘ |
| contains |
aetosaur fossils
ⓘ
dinosaur fossils ⓘ early dinosauriforms ⓘ invertebrate fossils ⓘ metoposaur fossils ⓘ palynomorphs ⓘ petrified logs ⓘ phytosaur fossils ⓘ volcanic ash beds ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| datingMethod | radiometric dating of volcanic ash beds ⓘ |
| discoveryYear | 1917 ⓘ |
| environmentOfDeposition |
floodplain
ⓘ
fluvial ⓘ lacustrine ⓘ |
| exposedAt |
Canyonlands National Park
ⓘ
Capitol Reef National Park ⓘ Grand Canyon National Park ⓘ Petrified Forest National Park ⓘ |
| geologicPeriod | Late Triassic ⓘ |
| hasMember |
Blue Mesa Member
ⓘ
linked to:
Blue Mesa
Monitor Butte Member ⓘ Owl Rock Member ⓘ Petrified Forest Member ⓘ
linked to:
Petrified Forest National Park
Rock Point Member ⓘ Shinarump Member ⓘ Sonsela Member ⓘ |
| knownFor |
colorful badlands
ⓘ
paleosols ⓘ petrified wood ⓘ plant fossils ⓘ vertebrate fossils ⓘ |
| locatedIn | southwestern United States ⓘ |
| namedBy | Herbert E. Gregory NERFINISHED ⓘ |
| namedFor | Chinle Valley ⓘ |
| otherLithology |
limestone
ⓘ
volcanic ash ⓘ |
| overlies |
Moenkopi Formation
ⓘ
Shinarump Conglomerate ⓘ |
| paleoclimate |
monsoonal
ⓘ
semi-arid ⓘ |
| partOf |
Chinle Group
ⓘ
linked to:
Chinle Formation
|
| primaryLithology |
conglomerate
ⓘ
mudstone ⓘ sandstone ⓘ siltstone ⓘ |
| region |
Colorado Plateau
ⓘ
Four Corners area ⓘ
linked to:
Four Corners region
|
| significance | key reference section for Late Triassic terrestrial stratigraphy in North America ⓘ |
| thickness | up to about 520 meters ⓘ |
| underlies |
Moenave Formation
ⓘ
linked to:
Kayenta Formation
Wingate Sandstone ⓘ |
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: Chinle Formation Description of subject: The Chinle Formation is a Late Triassic geologic formation in the southwestern United States, renowned for its colorful badlands, rich fossil beds, and extensive petrified wood deposits.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Chinle Formation
linked to: Chinle Formation
linked to: Chinle Formation
linked to: Chinle Formation