Coast Range Ophiolite
E440144
The Coast Range Ophiolite is a Jurassic-aged slice of ancient oceanic crust and upper mantle exposed in California’s Coast Ranges, representing part of the former Farallon Plate.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Coast Range Ophiolite canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T4434359 — 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: Coast Range Ophiolite Context triple: [Franciscan Complex, overlies, Coast Range Ophiolite]
-
A.
Coast Plutonic Complex
The Coast Plutonic Complex is a vast belt of granitic and related intrusive rocks forming the core of the Coast Mountains along the Pacific margin of western North America.
-
B.
Sierra Nevada batholith
The Sierra Nevada batholith is a massive granitic rock formation underlying much of California’s Sierra Nevada range, formed by ancient magma intrusions during Mesozoic subduction along the western edge of North America.
-
C.
Peninsular Ranges Batholith
The Peninsular Ranges Batholith is a vast Mesozoic granitic intrusive complex underlying much of the Peninsular Ranges of Southern California and northern Baja California, formed during subduction-related magmatism along the western margin of North America.
-
D.
Grenville orogenic belt
The Grenville orogenic belt is a vast, ancient mountain-building region in eastern North America and beyond, formed over a billion years ago and representing one of the major Precambrian collisional events in Earth’s history.
-
E.
Cascadia back-arc region
The Cascadia back-arc region is a tectonically active area east of the Cascadia subduction zone characterized by crustal extension, volcanism, and associated magmatic and geothermal activity.
- 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: Coast Range Ophiolite Target entity description: The Coast Range Ophiolite is a Jurassic-aged slice of ancient oceanic crust and upper mantle exposed in California’s Coast Ranges, representing part of the former Farallon Plate.
-
A.
Coast Plutonic Complex
The Coast Plutonic Complex is a vast belt of granitic and related intrusive rocks forming the core of the Coast Mountains along the Pacific margin of western North America.
-
B.
Sierra Nevada batholith
The Sierra Nevada batholith is a massive granitic rock formation underlying much of California’s Sierra Nevada range, formed by ancient magma intrusions during Mesozoic subduction along the western edge of North America.
-
C.
Peninsular Ranges Batholith
The Peninsular Ranges Batholith is a vast Mesozoic granitic intrusive complex underlying much of the Peninsular Ranges of Southern California and northern Baja California, formed during subduction-related magmatism along the western margin of North America.
-
D.
Grenville orogenic belt
The Grenville orogenic belt is a vast, ancient mountain-building region in eastern North America and beyond, formed over a billion years ago and representing one of the major Precambrian collisional events in Earth’s history.
-
E.
Cascadia back-arc region
The Cascadia back-arc region is a tectonically active area east of the Cascadia subduction zone characterized by crustal extension, volcanism, and associated magmatic and geothermal activity.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf |
geologic formation
ⓘ
ophiolite ⓘ tectonostratigraphic terrane ⓘ |
| ageRange | Middle Jurassic ⓘ |
| associatedWith |
Franciscan Complex
NERFINISHED
ⓘ
Great Valley forearc basin ⓘ |
| contains |
chromite deposits
ⓘ
mantle peridotite ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| exposedIn |
central California Coast Ranges
NERFINISHED
ⓘ
northern California Coast Ranges NERFINISHED ⓘ |
| formedBy | seafloor spreading ⓘ |
| geologicAge | Jurassic ⓘ |
| lithologyIncludes |
basalt
ⓘ
gabbro ⓘ pillow basalt ⓘ serpentinite ⓘ sheeted dike complex ⓘ ultramafic rocks ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
United States of America ⓘ
surface form:
United States
|
| overlainBy |
Great Valley Group
NERFINISHED
ⓘ
Great Valley Sequence NERFINISHED ⓘ |
| partOf | California Coast Ranges NERFINISHED ⓘ |
| partOfFormer | Farallon Plate NERFINISHED ⓘ |
| region | western North America ⓘ |
| relatedTo |
Cordilleran orogeny
NERFINISHED
ⓘ
Mesozoic subduction along the North American margin ⓘ |
| represents |
ancient oceanic crust
ⓘ
upper mantle section ⓘ |
| researchTopicIn |
ophiolite petrology
ⓘ
plate tectonics ⓘ tectonics of the California margin ⓘ |
| significantFor |
study of Farallon Plate history
ⓘ
study of forearc ophiolites ⓘ |
| tectonicProcess |
obduction
ⓘ
subduction-related accretion ⓘ |
| tectonicSetting | forearc region ⓘ |
| underlies |
Great Valley Group
NERFINISHED
ⓘ
Great Valley Sequence NERFINISHED ⓘ |
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: Coast Range Ophiolite Description of subject: The Coast Range Ophiolite is a Jurassic-aged slice of ancient oceanic crust and upper mantle exposed in California’s Coast Ranges, representing part of the former Farallon Plate.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.