Blue Ridge basement complex
E803325
The Blue Ridge basement complex is an ancient crystalline rock foundation of the Appalachian region that records some of the oldest tectonic and metamorphic events in eastern North America.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Blue Ridge basement complex canonical | 1 |
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
Precambrian terrane
ⓘ
crystalline basement ⓘ geologic formation ⓘ |
| composedPrimarilyOf |
gneiss
ⓘ
granite ⓘ migmatite ⓘ schist ⓘ |
| contains |
felsic intrusive bodies
ⓘ
mafic intrusive bodies ⓘ orthogneiss ⓘ paragneiss ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| extendsThrough |
Alabama
NERFINISHED
ⓘ
Georgia NERFINISHED ⓘ North Carolina NERFINISHED ⓘ South Carolina NERFINISHED ⓘ Tennessee NERFINISHED ⓘ Virginia NERFINISHED ⓘ |
| forms | basement for the Appalachian orogen ⓘ |
| geologicAge |
Neoproterozoic
ⓘ
Precambrian ⓘ |
| hasCharacteristic |
complex folding
ⓘ
ductile shear zones ⓘ strong foliation ⓘ |
| locatedIn |
Blue Ridge province
NERFINISHED
ⓘ
eastern North America ⓘ |
| metamorphicGrade |
amphibolite facies
ⓘ
granulite facies ⓘ |
| olderThan | Paleozoic sedimentary cover of the Appalachians ⓘ |
| partOf | Appalachian Mountains ⓘ |
| records |
early tectonic events of eastern North America
ⓘ
high‑grade metamorphic events ⓘ |
| relatedToOrogeny |
Appalachian orogeny
GENERATED
ⓘ
Grenville orogeny GENERATED ⓘ |
| rockType | crystalline rock ⓘ |
| significance |
constrains Precambrian crustal evolution of the Appalachian region
ⓘ
records some of the oldest tectonic events in eastern North America ⓘ |
| structuralStyle | polydeformed ⓘ |
| studiedInDiscipline |
metamorphic petrology
ⓘ
structural geology ⓘ tectonics ⓘ |
| tectonicSetting | collisional orogen ⓘ |
| underlies |
Blue Ridge cover sequence
ⓘ
metasedimentary rocks of the Blue Ridge ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.