Bishop Tuff
E278438
Bishop Tuff is a vast volcanic ash-flow deposit in eastern California, formed during the massive eruption that created the Long Valley Caldera about 760,000 years ago.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Bishop Tuff canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T2565313 — 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: Bishop Tuff Context triple: [Long Valley Caldera, hasFeature, Bishop Tuff]
-
A.
Bishop
Bishop is a small city in California’s Owens Valley, known as a gateway to the Eastern Sierra’s outdoor recreation, including hiking, climbing, and fishing.
-
B.
Elbertus
Elbertus is a variant form of the given name Elbert, used as a personal name.
-
C.
Pilate Stone
The Pilate Stone is an ancient limestone block bearing a Latin inscription that provides the only widely accepted archaeological evidence for the historical existence and Roman governorship of Pontius Pilate in Judea.
-
D.
Obispo Máximo
Obispo Máximo is the highest-ranking bishop and supreme head of the Philippine Independent Church.
-
E.
Ormond Stone
Ormond Stone was an American mathematician and astronomer known for his role in advancing mathematical scholarship and for serving as an early editor and organizer of major mathematical publications.
- 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: Bishop Tuff Target entity description: Bishop Tuff is a vast volcanic ash-flow deposit in eastern California, formed during the massive eruption that created the Long Valley Caldera about 760,000 years ago.
-
A.
Bishop
Bishop is a small city in California’s Owens Valley, known as a gateway to the Eastern Sierra’s outdoor recreation, including hiking, climbing, and fishing.
-
B.
Elbertus
Elbertus is a variant form of the given name Elbert, used as a personal name.
-
C.
Pilate Stone
The Pilate Stone is an ancient limestone block bearing a Latin inscription that provides the only widely accepted archaeological evidence for the historical existence and Roman governorship of Pontius Pilate in Judea.
-
D.
Obispo Máximo
Obispo Máximo is the highest-ranking bishop and supreme head of the Philippine Independent Church.
-
E.
Ormond Stone
Ormond Stone was an American mathematician and astronomer known for his role in advancing mathematical scholarship and for serving as an early editor and organizer of major mathematical publications.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
geologic formation
ⓘ
ignimbrite ⓘ volcanic ash-flow deposit ⓘ welded tuff ⓘ |
| arealExtent | thousands of square kilometers ⓘ |
| associatedWith | Long Valley Caldera ⓘ |
| classification | high-silica rhyolite tuff ⓘ |
| composition | rhyolitic ⓘ |
| contains |
lithic fragments
ⓘ
pumice clasts ⓘ volcanic glass ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| datingMethod | 40Ar/39Ar geochronology ⓘ |
| depositionalProcess | pyroclastic density currents ⓘ |
| dominantMinerals |
biotite
ⓘ
hornblende ⓘ plagioclase ⓘ quartz ⓘ sanidine ⓘ |
| eruptionAge | about 760,000 years ago ⓘ |
| eruptionStyle |
caldera-forming
ⓘ
plinian ⓘ |
| eruptionVolume | hundreds of cubic kilometers of magma ⓘ |
| exposedNear |
Bishop Creek area
ⓘ
Owens River Gorge ⓘ |
| formedDuring |
Long Valley Caldera
ⓘ
surface form:
Long Valley Caldera eruption
|
| forms | steep cliffs and canyon walls in outcrop ⓘ |
| geologicAge |
Pleistocene epoch
ⓘ
surface form:
Pleistocene
|
| importance | classic example of large-volume ignimbrite ⓘ |
| locatedIn | eastern California ⓘ |
| namedAfter | Bishop, California ⓘ |
| origin | explosive silicic volcanism ⓘ |
| overlies | pre-Pleistocene basement rocks ⓘ |
| partOf |
Long Valley Caldera
ⓘ
surface form:
Long Valley volcanic system
|
| proximalTo | Long Valley Caldera ⓘ |
| relatedHazard | evidence of large caldera-forming eruptions ⓘ |
| researchField |
Quaternary geology
ⓘ
igneous petrology ⓘ volcanology ⓘ |
| significance | key marker bed in western U.S. stratigraphy ⓘ |
| texture | vitric to crystal-rich welded tuff ⓘ |
| thickness | hundreds of meters in proximal areas ⓘ |
| typeLocality | near Bishop, California ⓘ |
| usedFor |
calibration of Quaternary timescales
ⓘ
tephrochronology in North America ⓘ |
| weldingDegree |
strongly welded in central parts
ⓘ
weakly welded to nonwelded at margins ⓘ |
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: Bishop Tuff Description of subject: Bishop Tuff is a vast volcanic ash-flow deposit in eastern California, formed during the massive eruption that created the Long Valley Caldera about 760,000 years ago.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.