Barrovian metamorphic zones

E744753

Barrovian metamorphic zones are a classic sequence of regional metamorphic grade zones in pelitic rocks, widely used as a model for understanding progressive metamorphism in orogenic belts.

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Statements (46)

Predicate Object
instanceOf metamorphic zonation model
regional metamorphism concept
appliesTo orogenic belts
pelitic rocks
associatedWith medium pressure metamorphism
medium temperature metamorphism
assumes compositionally similar pelitic protoliths
equilibrium mineral assemblages
basedOn index minerals
canonicalExample classic Scottish Barrovian sequence
characterizes progressive regional metamorphism
contrastedWith Buchan metamorphic zones NERFINISHED
contrastsWith high-pressure blueschist facies metamorphism
low-pressure Buchan-type metamorphism
developedFrom field mapping of index minerals
developedIn Scottish Highlands NERFINISHED
documentedIn metamorphic petrology textbooks
field geology
metamorphic petrology
formsPartOf classical metamorphic zonation schemes
hasZone biotite zone
chlorite zone
garnet zone
kyanite zone
sillimanite zone
staurolite zone
helpsConstrain depth of metamorphism
thermal structure of orogenic belts
timing of metamorphic events
indexMineralSequence chlorite to biotite to garnet to staurolite to kyanite to sillimanite
influenced classification of regional metamorphism
namedAfter George Barrow NERFINISHED
relatedConcept metamorphic facies
metamorphic isograds
pressure–temperature paths
represents increasing metamorphic grade sequence
requires mineralogical mapping across regional transects
timePeriod early 20th century
typicalRockType metapelite
typicalTectonicSetting collisional orogen GENERATED
usedBy metamorphic petrologists
structural geologists
usedFor interpreting pressure–temperature conditions
mapping metamorphic grade
reconstructing metamorphic field gradients
teaching progressive metamorphism

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.

George Barrow knownFor Barrovian metamorphic zones