Toroweap Formation
E1006661
The Toroweap Formation is a Permian-age sedimentary rock unit of the southwestern United States, notable for its sandstone, limestone, and gypsum layers that form prominent cliffs and slopes in the Grand Canyon region.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Toroweap Formation canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T12814110 — 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: Toroweap Formation Context triple: [Walnut Canyon National Monument, hasGeologicalComposition, Toroweap Formation]
-
A.
Moenkopi Formation
The Moenkopi Formation is a widespread Triassic-age sedimentary rock unit of the southwestern United States, known for its reddish-brown mudstones and sandstones that record ancient river, tidal, and shallow marine environments.
-
B.
Chinle Formation
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.
-
C.
Claron Formation
The Claron Formation is a geologic rock unit of colorful limestones and mudstones best known for forming the striking hoodoos and cliffs of Bryce Canyon and other parts of the Paunsaugunt Plateau in southern Utah.
-
D.
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.
-
E.
Kaiparowits Formation
The Kaiparowits Formation is a Late Cretaceous rock unit in southern Utah renowned for its exceptionally rich and diverse dinosaur and vertebrate fossil assemblages.
- 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: Toroweap Formation Target entity description: The Toroweap Formation is a Permian-age sedimentary rock unit of the southwestern United States, notable for its sandstone, limestone, and gypsum layers that form prominent cliffs and slopes in the Grand Canyon region.
-
A.
Moenkopi Formation
The Moenkopi Formation is a widespread Triassic-age sedimentary rock unit of the southwestern United States, known for its reddish-brown mudstones and sandstones that record ancient river, tidal, and shallow marine environments.
-
B.
Chinle Formation
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.
-
C.
Claron Formation
The Claron Formation is a geologic rock unit of colorful limestones and mudstones best known for forming the striking hoodoos and cliffs of Bryce Canyon and other parts of the Paunsaugunt Plateau in southern Utah.
-
D.
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.
-
E.
Kaiparowits Formation
The Kaiparowits Formation is a Late Cretaceous rock unit in southern Utah renowned for its exceptionally rich and diverse dinosaur and vertebrate fossil assemblages.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
geologic formation
ⓘ
sedimentary rock unit ⓘ |
| ageRange | middle Permian ⓘ |
| contains |
eolian sandstone beds
ⓘ
evaporite deposits ⓘ marine limestone beds ⓘ |
| containsFossils | marine invertebrates ⓘ |
| containsMineral |
anhydrite
ⓘ
calcite ⓘ gypsum ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| depositionalEnvironment |
coastal eolian
ⓘ
shallow marine ⓘ tidal flat ⓘ |
| exposedIn | Grand Canyon ⓘ |
| forms |
cliff-forming units
ⓘ
slope-forming units ⓘ |
| geologicAge | Permian ⓘ |
| geologicPeriod | Permian period ⓘ |
| geologicProvince |
Colorado Plateau Province
ⓘ
linked to:
Colorado Plateau
|
| hasColor |
gray
ⓘ
reddish-brown ⓘ tan ⓘ |
| hasMember |
Brady Canyon Member
ⓘ
Seligman Member ⓘ Wood Ranch Member ⓘ |
| isImportantFor | reconstructing Permian paleoenvironments ⓘ |
| isMappedBy |
U.S. Geological Survey
ⓘ
linked to:
United States Geological Survey
|
| isPartOfSequence | Permian stratigraphic sequence of the Grand Canyon ⓘ |
| isWellExposedAt |
North Rim of the Grand Canyon
ⓘ
linked to:
North Rim
Toroweap Overlook ⓘ |
| lithology |
gypsum
ⓘ
limestone ⓘ sandstone ⓘ |
| locatedIn |
Arizona
ⓘ
Nevada ⓘ Utah ⓘ |
| namedFor | Toroweap Valley ⓘ |
| notableFor |
prominent cliffs
ⓘ
slopes ⓘ |
| overlies | Coconino Sandstone ⓘ |
| partOf |
Colorado Plateau
ⓘ
Grand Canyon stratigraphy ⓘ |
| region |
Southwestern United States
ⓘ
linked to:
southwestern United States
|
| stratigraphicUnitOf | Grand Canyon Supergroup ⓘ |
| thickness | approximately 70 to 150 meters ⓘ |
| underlies |
Kaibab Formation
ⓘ
linked to:
Kaibab Limestone
|
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: Toroweap Formation Description of subject: The Toroweap Formation is a Permian-age sedimentary rock unit of the southwestern United States, notable for its sandstone, limestone, and gypsum layers that form prominent cliffs and slopes in the Grand Canyon region.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.