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On the rotation of biotite from the pelites around Gruvehagen, Trondhjems Feltet, Norway and its genetic implications

Published online by Cambridge University Press:  01 May 2009

Ananda Deb Mukherjee  and
Ranendra N. Sen
Ananda Deb Mukherjee
Affiliation:
Institütt for Geologi, University of Oslo, Oslo, Norway
Ranendra N. Sen
Affiliation:
Department of Geological Sciences, Jadavpur University, Calcutta 32, India
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Summary

The occurrence of stout and stumpy crystals of biotite elongated parallel to the schistosity and showing askew cleavage is found to be due to rotation. The relation between rotation of biotite and deformation is described. Rotated biotite contains a higher amount of FeO, TiO2 and Al2O3 in comparison to the unrotated fresh and recrystallized biotite.

Type
Articles
Information
Geological Magazine , Volume 108 , Issue 2 , May 1971 , pp. 145 - 150
Copyright
Copyright © Cambridge University Press 1971

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References

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