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On the elimination of plagioclase twinning

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Proceedings / Indian Academy of Sciences

Abstract

A study of the cataclastically deformed plagioclase from a fault zone reveals that the characteristic plagioclase twinning is destroyed in some way. It is presumed that twinning in plagioclase is an irreversible or thermodynamically unstable imperfection. It is concluded that cataclasis and the consequent induced twinning are pre-tectonic crystallisation features, while elimination of twinning is a post-tectonic deformational feature.

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Authors and Affiliations

  1. Department of Geology, Sri Venkateswara University, Tirupati, A.P.

    E. A. V. Prasad

Authors
  1. E. A. V. Prasad
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Communicated by Prof. C. S. Pichamuthu,f.a.sc.

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Prasad, E.A.V. On the elimination of plagioclase twinning. Proc. Indian Acad. Sci. 64, 296–300 (1966). https://doi.org/10.1007/BF03052133

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  • DOI: https://doi.org/10.1007/BF03052133

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