Midcontinent Rift System
E923856
The Midcontinent Rift System is a billion-year-old, failed continental rift running in a great arc through the central United States and Canada, notable for its thick volcanic rock sequences and associated mineral deposits.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Midcontinent Rift System canonical | 1 |
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
Proterozoic tectonic feature
ⓘ
continental rift ⓘ failed rift ⓘ geological rift ⓘ |
| age | approximately 1.1 billion years ⓘ |
| associatedWith |
Keweenawan Supergroup
NERFINISHED
ⓘ
Lake Superior basin NERFINISHED ⓘ continental breakup processes ⓘ |
| contains |
intrusive mafic-ultramafic bodies
ⓘ
thick sequences of flood basalts ⓘ |
| discoveredBy | geophysical surveys ⓘ |
| extendsThrough |
Iowa
NERFINISHED
ⓘ
Kansas NERFINISHED ⓘ Kansas-Nebraska region subsurface ⓘ Lake Superior region NERFINISHED ⓘ Michigan NERFINISHED ⓘ Minnesota NERFINISHED ⓘ Nebraska NERFINISHED ⓘ Oklahoma NERFINISHED ⓘ Ontario NERFINISHED ⓘ Wisconsin NERFINISHED ⓘ |
| formedDuring | Mesoproterozoic era ⓘ |
| geologicPeriod | Mesoproterozoic ⓘ |
| hasEconomicResource |
copper deposits
ⓘ
iron ore deposits ⓘ native copper deposits of Keweenaw Peninsula ⓘ nickel deposits ⓘ platinum-group elements ⓘ |
| hasFeature |
associated sedimentary basins
ⓘ
gravity anomaly ⓘ large igneous province characteristics ⓘ magnetic anomaly ⓘ thick volcanic rock sequences ⓘ |
| hasRockType |
basalt
ⓘ
mafic volcanic rocks ⓘ sedimentary rocks ⓘ |
| hasShape | curved arc ⓘ |
| locatedIn |
Canada
ⓘ
North America ⓘ United States of America ⓘ
surface form:
United States
|
| notableFor |
associated mineral deposits
ⓘ
large gravity and magnetic anomalies ⓘ thick volcanic rock sequences ⓘ |
| status | failed rift ⓘ |
| studiedInDiscipline |
geology
ⓘ
geophysics ⓘ tectonics ⓘ |
| tectonicSetting | intraplate rift ⓘ |
| terminatedBy | compressional tectonics ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.