Poison Canyon Formation
E481007
The Poison Canyon Formation is a geologic rock unit in the Raton Basin of Colorado and New Mexico, known for its Paleocene-age fluvial sandstones, mudstones, and coal beds that record post-dinosaur terrestrial environments.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Poison Canyon Formation canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T4935215 — 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: Poison Canyon Formation Context triple: [Raton Basin, contains, Poison Canyon Formation]
-
A.
Lyell Canyon
Lyell Canyon is a scenic glacial valley in Yosemite National Park known for its meadows, the Lyell Fork of the Tuolumne River, and access to high Sierra backcountry.
-
B.
Solstice Canyon
Solstice Canyon is a scenic canyon and hiking area in the Santa Monica Mountains of Southern California, known for its waterfalls, coastal views, and historic ruins.
-
C.
Ice Box Canyon
Ice Box Canyon is a popular, shaded hiking and climbing area within Nevada’s Red Rock Canyon known for its cool temperatures, steep sandstone walls, and seasonal waterfalls.
-
D.
Desolation Canyon
Desolation Canyon is a remote, rugged gorge in Death Valley National Park known for its colorful badlands, narrow washes, and scenic hiking routes through eroded desert terrain.
-
E.
LeConte Canyon
LeConte Canyon is a scenic glacial valley in California’s Sierra Nevada, renowned among hikers for its dramatic granite walls, alpine meadows, and access to major backcountry trails.
- 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: Poison Canyon Formation Target entity description: The Poison Canyon Formation is a geologic rock unit in the Raton Basin of Colorado and New Mexico, known for its Paleocene-age fluvial sandstones, mudstones, and coal beds that record post-dinosaur terrestrial environments.
-
A.
Lyell Canyon
Lyell Canyon is a scenic glacial valley in Yosemite National Park known for its meadows, the Lyell Fork of the Tuolumne River, and access to high Sierra backcountry.
-
B.
Solstice Canyon
Solstice Canyon is a scenic canyon and hiking area in the Santa Monica Mountains of Southern California, known for its waterfalls, coastal views, and historic ruins.
-
C.
Ice Box Canyon
Ice Box Canyon is a popular, shaded hiking and climbing area within Nevada’s Red Rock Canyon known for its cool temperatures, steep sandstone walls, and seasonal waterfalls.
-
D.
Desolation Canyon
Desolation Canyon is a remote, rugged gorge in Death Valley National Park known for its colorful badlands, narrow washes, and scenic hiking routes through eroded desert terrain.
-
E.
LeConte Canyon
LeConte Canyon is a scenic glacial valley in California’s Sierra Nevada, renowned among hikers for its dramatic granite walls, alpine meadows, and access to major backcountry trails.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
geologic formation
ⓘ
stratigraphic unit ⓘ |
| contains |
channel sandstones
ⓘ
coal beds ⓘ mudstone floodplain deposits ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| depositionalEnvironment | fluvial ⓘ |
| fossilContent |
non-marine vertebrate fossils
ⓘ
plant fossils ⓘ |
| geologicAge | Paleocene ⓘ |
| geologicPeriod | Paleogene ⓘ |
| lithology |
coal
ⓘ
mudstone ⓘ sandstone ⓘ |
| locatedIn |
Colorado
ⓘ
New Mexico ⓘ Raton Basin ⓘ |
| namedFor | Poison Canyon ⓘ |
| overlies | Raton Formation ⓘ |
| partOf | Denver Basin–Raton Basin region ⓘ |
| records | post-dinosaur terrestrial environments ⓘ |
| region | southern Rocky Mountains ⓘ |
| stratigraphicRelation | postdates Cretaceous–Paleogene boundary ⓘ |
| tectonicSetting | Laramide foreland basin ⓘ |
| underlies | Cuchara Formation ⓘ |
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: Poison Canyon Formation Description of subject: The Poison Canyon Formation is a geologic rock unit in the Raton Basin of Colorado and New Mexico, known for its Paleocene-age fluvial sandstones, mudstones, and coal beds that record post-dinosaur terrestrial environments.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.