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Continuous Reactions

Continuous Reactions. Compositional Changes in the Biotite Zone. Increasing Grade. Compositions of muscovite, chlorite and biotite, but particularly, muscovite and chlorite change continuously with increasing metamorphic grade. Continuous Reaction. H 2 O + Chloritoid + Biotite = Chlorite . B.

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Continuous Reactions

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  1. Continuous Reactions

  2. Compositional Changes in the Biotite Zone Increasing Grade Compositions of muscovite, chlorite and biotite, but particularly, muscovite and chlorite change continuously with increasing metamorphic grade

  3. Continuous Reaction H2O + Chloritoid + Biotite = Chlorite B A C Discontinuous Reaction H2O + Chloritoid + Biotite = Chlorite + Garnet

  4. Continuous Changes Across the Staurolite-Biotite-in Reaction Chlorite + Staurolite = Garnet + H2O Chlorite = Garnet + Biotite + H2O Chlorite = Staurolite+ Biotite + H2O Staurolite+ Biotite = Garnet + H2O

  5. The T-XMg Relationships Staurolite-Biotite-inReaction Mg-enrichment typically in the order: cordierite > chlorite > biotite > chloritoid > staurolite > garnet

  6. Calibration of the Staurolite-biotite-in Reaction

  7. Staurolite-out Reaction

  8. The Amphibolite Facies in Continuous Reaction Space

  9. F M P-XMg Sections

  10. T-XMg and P-XMg Sections

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