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Descriptive microstructural terminology for high-grade metamorphic tectonites

Published online by Cambridge University Press:  01 May 2009

K. D. Collerson
K. D. Collerson
Affiliation:
Department of GeologyMemorial University of NewfoundlandSt John'sNewfoundlandCanada
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Summary

In high-grade regionally metamorphosed tectonites three varieties of micro- structures are recognized, namely (1) granoblastic, (2) granoblastic elongate, (3) anastomosing. Relative and absolute grain size, combined with grain boundary shape, provide the basis for their description. This microstructural classification is directly applicable to granulite facies and transitional granulite to amphibolite facies rocks and avoids some of the shortcomings inherent in previous terminologies.

Type
Articles
Information
Geological Magazine , Volume 111 , Issue 4 , July 1974 , pp. 313 - 318
Copyright
Copyright © Cambridge University Press 1974

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