Birimian terranes
E779349
Birimian terranes are ancient Paleoproterozoic volcanic and sedimentary rock belts in West Africa that host major gold and base metal deposits and form a key part of the region’s early continental crust.
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
Paleoproterozoic greenstone belt
ⓘ
geological terrane ⓘ volcano-sedimentary belt ⓘ |
| ageRange | approximately 2.2–2.1 billion years ⓘ |
| associatedWith |
Tarkwaian Group
NERFINISHED
ⓘ
quartz vein gold systems ⓘ shear zone-hosted gold mineralization ⓘ |
| composedOf |
conglomerate
ⓘ
felsic volcanic rocks ⓘ greywacke ⓘ mafic volcanic rocks ⓘ sedimentary rocks ⓘ shale ⓘ turbiditic sedimentary rocks ⓘ volcanic rocks ⓘ volcaniclastic rocks ⓘ |
| deformationStyle | fold-and-thrust belt ⓘ |
| economicImportance |
major base metal mining region
ⓘ
major gold mining region ⓘ |
| formedDuring | Eburnean orogeny NERFINISHED ⓘ |
| foundInCountry |
Burkina Faso
NERFINISHED
ⓘ
Côte d’Ivoire NERFINISHED ⓘ Ghana NERFINISHED ⓘ Guinea NERFINISHED ⓘ Mali NERFINISHED ⓘ Niger NERFINISHED ⓘ Senegal NERFINISHED ⓘ |
| geologicalAge | Paleoproterozoic NERFINISHED ⓘ |
| hostTo |
base metal deposits
ⓘ
bauxite deposits ⓘ copper deposits ⓘ gold deposits ⓘ iron ore deposits ⓘ lead deposits ⓘ lode gold deposits ⓘ manganese deposits ⓘ orogenic gold deposits ⓘ zinc deposits ⓘ |
| locatedIn |
West Africa
NERFINISHED
ⓘ
West African Craton NERFINISHED ⓘ |
| metamorphicGrade |
greenschist facies
ⓘ
low-grade metamorphism ⓘ |
| overlainBy | Tarkwaian sedimentary rocks ⓘ |
| partOf | early continental crust of West Africa ⓘ |
| researchField |
Precambrian geology
ⓘ
economic geology ⓘ |
| significance |
key archive of early Proterozoic plate tectonics
ⓘ
record early Paleoproterozoic crustal growth in West Africa ⓘ |
| tectonicSetting |
juvenile arc terrane
ⓘ
volcanic arc complex ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.