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The Facies Classification of Metamorphic Rocks

Published online by Cambridge University Press:  01 May 2009

C. E. Tilley
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Extract

The diversity in mineral composition of metamorphic rocks can be regarded as the resultant of two independent variables, first of the ultimate composition of the rocks, and secondly of the grade of metamorphism, or the particular pressure-temperature conditions under which the rocks have arisen. It is clear that these two variables may well form the basis of a classification of rocks of metamorphic origin.

Type
Original Articles
Information
Geological Magazine , Volume 61 , Issue 4 , April 1924 , pp. 167 - 170
Copyright
Copyright © Cambridge University Press 1924

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References

page 167 note 1 Grubenmann, , Die Kristallinen Schiefer, 1910.Google Scholar

page 167 note 2 Norsk. Geol. Tidsskr., vi, 1920, pp. 143–94.Google Scholar

page 168 note 1 T.M.P.M., xxxv, 1921, p. 215.Google Scholar

page 169 note 1 Green Beds of a definite and limited range of chemical composition are here referred to.