Medium-Grade Mylonites

  • Rudolph A. J. TrouwEmail author
  • Cees W. Passchier
  • Dirk J. Wiersma


The temperature range for the formation of this group of mylonites is approximately 500 to 650 °C. In medium-grade mylonites quartz is usually fully recrystallised, mainly by subgrain rotation, and has grown to a polygonal crystalloblastic fabric of strain free grains with an average grain size exceeding about 50 micrometers.


Mylonitic Foliation Undulose Extinction Subgrain Rotation High Strain Zone Recrystallise Quartz 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Rudolph A. J. Trouw
    • 1
    Email author
  • Cees W. Passchier
    • 2
  • Dirk J. Wiersma
    • 3
  1. 1.Depto. Geologia Ilha do FundaoUniversidade Federal do Rio de JaneiroRio de Janeiro-RJBrazil
  2. 2.Institut für GeowissenschaftenUniversität MainzMainzGermany
  3. 3.UtrechtThe Netherlands

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