Guaporé Shield
E786468
The Guaporé Shield is an ancient geological craton in central South America, composed of some of the continent’s oldest rocks and forming part of the stable Precambrian core underlying the Amazon region.
Statements (28)
| Predicate | Object |
|---|---|
| instanceOf |
Precambrian geological province
ⓘ
craton ⓘ |
| boundedBy | Phanerozoic sedimentary basins ⓘ |
| contains | some of the oldest rocks in South America ⓘ |
| continent | South America ⓘ |
| country |
Bolivia
ⓘ
Brazil ⓘ |
| economicResourcesInclude |
base metals
ⓘ
gold ⓘ precious metals ⓘ |
| extendsInto |
eastern Bolivia
ⓘ
western Brazil ⓘ |
| forms | part of the stable basement of the Amazon Basin ⓘ |
| formsPartOf | South American Precambrian core NERFINISHED ⓘ |
| geologicalAge | Precambrian NERFINISHED ⓘ |
| lithologyIncludes |
gneiss
ⓘ
granite ⓘ greenstone belts ⓘ metamorphic rocks ⓘ |
| locatedIn | central South America ⓘ |
| namedAfter | Guaporé River region NERFINISHED ⓘ |
| overlainBy | younger sedimentary cover at margins ⓘ |
| partOf | Amazonian Craton NERFINISHED ⓘ |
| significance |
contributes to understanding of Precambrian tectonics
ⓘ
records early continental crust formation in South America ⓘ |
| structuralCharacter | largely undeformed since Precambrian ⓘ |
| tectonicSetting | stable continental crust ⓘ |
| underlies | Amazon region ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.