Insular Belt
E733872
The Insular Belt is a major Mesozoic volcanic and plutonic terrane along the western margin of North America, formed by the accretion of island arcs that now make up much of the Insular Mountains and adjacent regions.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Insular Belt canonical | 2 |
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
Mesozoic geological feature
ⓘ
geologic terrane ⓘ plutonic terrane ⓘ volcanic arc terrane ⓘ |
| associatedWith | Coast Plutonic Complex NERFINISHED ⓘ |
| boundedBy | Coast Belt ⓘ |
| characterizedBy |
large plutonic intrusions
ⓘ
thick volcanic sequences ⓘ |
| composedOf |
island arc complexes
ⓘ
plutonic rocks ⓘ volcanic rocks ⓘ |
| extendsThrough |
British Columbia
NERFINISHED
ⓘ
Yukon NERFINISHED ⓘ southeastern Alaska ⓘ |
| formedBy | accretion of island arcs ⓘ |
| formedDuring |
Cretaceous
NERFINISHED
ⓘ
Jurassic ⓘ Triassic ⓘ |
| geologicAge | Mesozoic ⓘ |
| importantFor | reconstruction of Cordilleran tectonic history ⓘ |
| includes |
Alexander terrane
NERFINISHED
ⓘ
Haida Gwaii NERFINISHED ⓘ Insular Mountains NERFINISHED ⓘ Queen Charlotte Islands NERFINISHED ⓘ Vancouver Island NERFINISHED ⓘ Wrangellia terrane NERFINISHED ⓘ |
| isPartOf | Insular superterrane NERFINISHED ⓘ |
| lithologyIncludes |
andesite
ⓘ
basalt ⓘ diorite ⓘ gabbro ⓘ granodiorite ⓘ |
| locatedIn | western margin of North America ⓘ |
| namedFor | Insular Mountains NERFINISHED ⓘ |
| overlies | Intermontane Belt NERFINISHED ⓘ |
| partOf |
Canadian Cordillera
NERFINISHED
ⓘ
North American Cordillera NERFINISHED ⓘ |
| relatedTo | subduction of oceanic plates beneath North America ⓘ |
| separatedFrom | Intermontane Belt by major faults ⓘ |
| studyField |
geology
ⓘ
petrology ⓘ tectonics ⓘ |
| tectonicOrigin | island arc accretion ⓘ |
| tectonicSetting | convergent margin ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.