Barrovian metamorphism
E744754
Barrovian metamorphism is a classic regional metamorphic sequence characterized by systematically increasing metamorphic grade and index minerals with depth, first documented in the Scottish Highlands.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Barrovian metamorphism canonical | 1 |
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
geological process
ⓘ
metamorphic facies series ⓘ regional metamorphism ⓘ |
| associatedWith |
crustal thickening
ⓘ
fold and thrust belts ⓘ medium pressure metamorphism ⓘ moderate geothermal gradient ⓘ |
| characterizedBy |
progressive development of index minerals
ⓘ
systematic increase in metamorphic grade with depth ⓘ |
| contrastedWith |
Buchan metamorphism
NERFINISHED
ⓘ
high-pressure metamorphism ⓘ |
| controlledBy | pressure-temperature-time paths ⓘ |
| developsIn | regional crustal scale ⓘ |
| documentedBy | George Barrow NERFINISHED ⓘ |
| educationalUse | type example of regional metamorphism ⓘ |
| firstDocumentedIn | Scottish Highlands NERFINISHED ⓘ |
| forms | metamorphic zones named after index minerals ⓘ |
| hasKeyConcept |
index mineral zones
ⓘ
isograds ⓘ |
| historicalSignificance | first systematic mapping of metamorphic zones ⓘ |
| indexMineralSequenceIncludes |
biotite
ⓘ
chlorite ⓘ garnet ⓘ kyanite ⓘ sillimanite ⓘ staurolite ⓘ |
| linkedTo |
deformation during orogeny
ⓘ
regional heat flow increase ⓘ |
| metamorphicGradeProgression | low grade to high grade ⓘ |
| namedAfter | George Barrow NERFINISHED ⓘ |
| occursIn | metamorphic terranes worldwide ⓘ |
| pressureTemperatureCharacteristic |
intermediate pressure
ⓘ
intermediate temperature ⓘ |
| relatedConcept |
metamorphic facies
ⓘ
metamorphic grade ⓘ orogenic metamorphism ⓘ |
| requires | burial to mid-crustal depths ⓘ |
| spatialPattern | roughly parallel isograds across a region ⓘ |
| timeOfRecognition | early 20th century ⓘ |
| typicalMineralAssemblage | quartz-plagioclase-biotite-garnet in pelites GENERATED ⓘ |
| typicalProtolith |
mudstones
GENERATED
ⓘ
pelitic sedimentary rocks GENERATED ⓘ shales GENERATED ⓘ |
| typicalTectonicSetting |
continental collision zone
GENERATED
ⓘ
orogenic belt GENERATED ⓘ |
| usedFor |
interpreting tectonometamorphic evolution
ⓘ
mapping metamorphic zones ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.