Nain craton
E551501
The Nain craton is an ancient, stable block of Earth’s continental crust in northeastern Canada, composed largely of Archean rocks and forming part of the geological core of North America.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Nain craton canonical | 1 |
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
craton
ⓘ
geological province ⓘ |
| ageEstimate | >2.5 billion years ⓘ |
| ageGroup | Precambrian ⓘ |
| boundedBy | Paleoproterozoic orogenic belts ⓘ |
| characteristic |
ancient
ⓘ
tectonically stable ⓘ |
| composedMostlyOf | Archean rocks ⓘ |
| composedOf |
gneiss
ⓘ
granitoid intrusions ⓘ granulite-facies rocks ⓘ tonalite–trondhjemite–granodiorite (TTG) gneiss ⓘ |
| contains |
Archean basement complexes
ⓘ
mafic and ultramafic intrusions ⓘ metasedimentary sequences ⓘ |
| continent | North America ⓘ |
| country | Canada ⓘ |
| crustType | continental crust ⓘ |
| exposedIn |
Nain Province
NERFINISHED
ⓘ
coastal Labrador ⓘ |
| forms | part of the geological core of North America ⓘ |
| formsBoundaryWith |
Labrador Trough
NERFINISHED
ⓘ
Torngat Orogen NERFINISHED ⓘ |
| formsPartOf |
Canadian Shield
NERFINISHED
ⓘ
North Atlantic craton region NERFINISHED ⓘ |
| geologicalAge | Archean ⓘ |
| hasFeature |
complex metamorphic and magmatic history
ⓘ
structural reworking during Proterozoic orogenies ⓘ |
| knownFor |
high-grade metamorphic rocks
ⓘ
well-preserved Archean crust ⓘ |
| lithology |
granitoid plutons
ⓘ
high-grade orthogneiss ⓘ paragneiss ⓘ |
| locatedIn |
Labrador
NERFINISHED
ⓘ
eastern Canadian Shield ⓘ northeastern Canada ⓘ |
| namedAfter | Nain, Labrador NERFINISHED ⓘ |
| overlainBy | younger sedimentary cover in places ⓘ |
| partOf |
Laurentian craton
NERFINISHED
ⓘ
North American craton NERFINISHED ⓘ |
| region | eastern Labrador coast ⓘ |
| researchField | Precambrian geology ⓘ |
| significance |
constrains Archean tectonic processes
ⓘ
records early continental crust formation ⓘ |
| studyMethod |
geochronology
ⓘ
isotope geochemistry ⓘ structural geology ⓘ |
| tectonicRole | core of the eastern Canadian Shield ⓘ |
| tectonicSetting | shield area ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.