The Four Divisions of Metamorphic Grade

  • Helmut G. F. Winkler
Part of the Springer Study Edition book series (SSE)


Metamorphic grade has been used as an inprecise term “to signify the degree or state of metamorphism” (Tilley, 1924). For example, lowgrade metamorphism implies formation at relatively low temperatures typical of the greenschist facies, and medium-grade metamorphism refers to conditions of the amphibolite facies. Although not necessary in principle for a classification of metamorphism, it is very practical in fieldwork and makes orientation much easier if the entire P, T range of metamorphic conditions is divided into a few large divisions of meta morphic grade:
  • Very-low-grade (sehr schwach)

  • Low-grade (schwach)

  • Medium-grade (mittel)

  • High-grade (stark)


Metamorphic Rock Metamorphie Grade Greenschist Facies Amphibolite Facies Mineral Paragenesis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Science+Business Media New York 1979

Authors and Affiliations

  • Helmut G. F. Winkler
    • 1
  1. 1.Institute of Mineralogy and PetrologyUniversity of GöttingenFederal Republic of Germany

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