Peninsular Gneiss
E340607
Peninsular Gneiss is an ancient, highly metamorphosed rock formation that forms part of the geological foundation of southern India and is prominently exposed at sites like Lalbagh’s famous rock outcrop in Bengaluru.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Peninsular Gneiss canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T3247143 — 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: Peninsular Gneiss Context triple: [Lalbagh Botanical Garden, LalbaghRockGeology, Peninsular Gneiss]
-
A.
Dalradian Supergroup
The Dalradian Supergroup is a thick sequence of late Precambrian to early Paleozoic metamorphic sedimentary and volcanic rocks extensively exposed in the Scottish Highlands and parts of Ireland.
-
B.
Moine Supergroup
The Moine Supergroup is a sequence of Neoproterozoic metamorphic rocks in the Scottish Highlands, notable for recording early tectonic events prior to the Caledonian orogeny.
-
C.
Grampian Terrane
The Grampian Terrane is a major geological block in Scotland characterized by ancient metamorphic and igneous rocks that form much of the Grampian Highlands.
-
D.
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.
-
E.
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.
- 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: Peninsular Gneiss Target entity description: Peninsular Gneiss is an ancient, highly metamorphosed rock formation that forms part of the geological foundation of southern India and is prominently exposed at sites like Lalbagh’s famous rock outcrop in Bengaluru.
-
A.
Dalradian Supergroup
The Dalradian Supergroup is a thick sequence of late Precambrian to early Paleozoic metamorphic sedimentary and volcanic rocks extensively exposed in the Scottish Highlands and parts of Ireland.
-
B.
Moine Supergroup
The Moine Supergroup is a sequence of Neoproterozoic metamorphic rocks in the Scottish Highlands, notable for recording early tectonic events prior to the Caledonian orogeny.
-
C.
Grampian Terrane
The Grampian Terrane is a major geological block in Scotland characterized by ancient metamorphic and igneous rocks that form much of the Grampian Highlands.
-
D.
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.
-
E.
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.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Archaean basement complex
ⓘ
geological formation ⓘ gneiss ⓘ metamorphic rock ⓘ |
| associatedWith | Dharwar Supergroup ⓘ |
| composition |
biotite
ⓘ
feldspar ⓘ hornblende ⓘ quartz ⓘ |
| contains |
felsic bands
ⓘ
mafic enclaves ⓘ |
| country | India ⓘ |
| exposedIn |
Dharwar Craton
ⓘ
surface form:
Karnataka craton
parts of Andhra Pradesh ⓘ parts of Tamil Nadu ⓘ |
| exposureType | inselnberg and rocky knolls ⓘ |
| formationProcess | high-grade regional metamorphism ⓘ |
| forms | basement for younger sedimentary sequences ⓘ |
| geologicalAge |
Archaean
ⓘ
Precambrian ⓘ |
| importance | key unit for understanding early crustal evolution of Indian subcontinent ⓘ |
| lithology |
banded gneiss
ⓘ
granite gneiss ⓘ migmatitic gneiss ⓘ |
| locatedIn |
Bengaluru
ⓘ
Karnataka ⓘ southern India ⓘ |
| metamorphicGrade | high-grade ⓘ |
| notableExposureAt |
Lalbagh Rock
ⓘ
surface form:
Lalbagh rock outcrop
|
| notableSite |
Lalbagh Botanical Garden
ⓘ
surface form:
Lalbagh Botanical Garden, Bengaluru
|
| partOf |
Indian Shield
ⓘ
Peninsular India ⓘ
surface form:
Peninsular India basement
|
| recognizedBy | Geological Survey of India ⓘ |
| scientificDiscipline | geology ⓘ |
| significance | forms geological foundation of southern India ⓘ |
| structuralFeature |
foliation planes
ⓘ
gneissic banding ⓘ |
| studiedIn |
geochronology
ⓘ
petrology ⓘ structural geology ⓘ |
| texture |
banded
ⓘ
foliated ⓘ |
| typeLocality | Bengaluru region ⓘ |
| underlies |
Dharwar Supergroup
ⓘ
surface form:
Dharwar greenstone belts
|
| usedFor |
geological education
ⓘ
petrological studies ⓘ |
| weatheringStyle | spheroidal weathering in some exposures ⓘ |
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: Peninsular Gneiss Description of subject: Peninsular Gneiss is an ancient, highly metamorphosed rock formation that forms part of the geological foundation of southern India and is prominently exposed at sites like Lalbagh’s famous rock outcrop in Bengaluru.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.