Imperial Fault Zone
E1041233
The Imperial Fault Zone is a major active strike-slip fault system in Southern California that forms part of the southernmost extension of the San Andreas Fault system and is a significant source of regional earthquakes.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Imperial Fault Zone canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T13456909 — 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: Imperial Fault Zone Context triple: [Brawley Seismic Zone, links, Imperial Fault Zone]
-
A.
Heezen Fault Zone
The Heezen Fault Zone is a major undersea geological fault system named in honor of American oceanographer Bruce C. Heezen, recognized for his pioneering work in mapping the ocean floor.
-
B.
Septentrional-Oriente fault zone
The Septentrional-Oriente fault zone is a major strike-slip fault system in the northern Caribbean region that accommodates tectonic motion between the North American and Caribbean plates and is a significant source of regional earthquakes.
-
C.
Blackwater fault zone
The Blackwater fault zone is a major right-lateral strike-slip fault system in the Mojave Desert of eastern California that accommodates part of the region’s active tectonic shear between the Pacific and North American plates.
-
D.
Liquiñe-Ofqui Fault Zone
The Liquiñe-Ofqui Fault Zone is a major strike-slip fault system in southern Chile that controls much of the region’s tectonic activity, volcanism, and seismicity along the Andean margin.
-
E.
Elsinore Fault Zone
The Elsinore Fault Zone is a major right-lateral strike-slip fault system in Southern California that accommodates part of the motion between the Pacific and North American tectonic plates and poses significant seismic hazard to the region.
- 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: Imperial Fault Zone Target entity description: The Imperial Fault Zone is a major active strike-slip fault system in Southern California that forms part of the southernmost extension of the San Andreas Fault system and is a significant source of regional earthquakes.
-
A.
Heezen Fault Zone
The Heezen Fault Zone is a major undersea geological fault system named in honor of American oceanographer Bruce C. Heezen, recognized for his pioneering work in mapping the ocean floor.
-
B.
Septentrional-Oriente fault zone
The Septentrional-Oriente fault zone is a major strike-slip fault system in the northern Caribbean region that accommodates tectonic motion between the North American and Caribbean plates and is a significant source of regional earthquakes.
-
C.
Blackwater fault zone
The Blackwater fault zone is a major right-lateral strike-slip fault system in the Mojave Desert of eastern California that accommodates part of the region’s active tectonic shear between the Pacific and North American plates.
-
D.
Liquiñe-Ofqui Fault Zone
The Liquiñe-Ofqui Fault Zone is a major strike-slip fault system in southern Chile that controls much of the region’s tectonic activity, volcanism, and seismicity along the Andean margin.
-
E.
Elsinore Fault Zone
The Elsinore Fault Zone is a major right-lateral strike-slip fault system in Southern California that accommodates part of the motion between the Pacific and North American tectonic plates and poses significant seismic hazard to the region.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
active fault
ⓘ
geologic fault zone ⓘ strike-slip fault ⓘ |
| activityStatus | historically active ⓘ |
| associatedWith |
Gulf of California rift zone
NERFINISHED
ⓘ
Salton Sea geothermal system NERFINISHED ⓘ |
| connectsTo |
Brawley Seismic Zone
NERFINISHED
ⓘ
Cerro Prieto Fault NERFINISHED ⓘ San Andreas Fault NERFINISHED ⓘ |
| country | United States of America ⓘ |
| displacementType | strike-slip ⓘ |
| geologicAge | Quaternary ⓘ |
| hasFeature |
shallow seismicity
ⓘ
surface ruptures during large earthquakes ⓘ |
| hazardType |
ground shaking
ⓘ
surface fault rupture ⓘ |
| isExtensionOf | southern San Andreas Fault NERFINISHED ⓘ |
| isSegmentOf | Pacific–North America plate boundary NERFINISHED ⓘ |
| isSourceOf | regional earthquakes ⓘ |
| locatedIn |
Imperial Valley
NERFINISHED
ⓘ
Salton Trough NERFINISHED ⓘ Southern California ⓘ United States of America ⓘ
surface form:
United States
|
| maximumMagnitudeApprox | around 7.0 ⓘ |
| movementType | horizontal displacement ⓘ |
| near | US–Mexico border NERFINISHED ⓘ |
| notableEarthquake |
1940 Imperial Valley earthquake
NERFINISHED
ⓘ
1979 Imperial Valley earthquake NERFINISHED ⓘ |
| orientation | northwest-southeast ⓘ |
| partOf | San Andreas Fault system NERFINISHED ⓘ |
| passesNear |
Calexico, California
NERFINISHED
ⓘ
El Centro, California NERFINISHED ⓘ Imperial, California NERFINISHED ⓘ |
| plateBoundaryBetween |
North American Plate
NERFINISHED
ⓘ
Pacific Plate NERFINISHED ⓘ |
| region | Colorado Desert NERFINISHED ⓘ |
| relativeMotion | right-lateral ⓘ |
| riskCategory | significant seismic source in Southern California ⓘ |
| seismicHazardFor |
Imperial County, California
NERFINISHED
ⓘ
Mexicali Valley NERFINISHED ⓘ |
| state |
California, United States
ⓘ
surface form:
California
|
| studiedBy |
geologists
ⓘ
seismologists ⓘ |
| tectonicSetting | transform plate boundary ⓘ |
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: Imperial Fault Zone Description of subject: The Imperial Fault Zone is a major active strike-slip fault system in Southern California that forms part of the southernmost extension of the San Andreas Fault system and is a significant source of regional earthquakes.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.