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Computation of the values of the finite strains in the Molare region, Ticino, Switzerland, using stretched tourmaline crystals

Published online by Cambridge University Press:  01 May 2009

V. C. Thakur
V. C. Thakur
Affiliation:
Wadia Institute of Himalayan Geology, Delhi University Campus, Delhi-7, India
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Summary

The stretched crystals of tourmaline occur in the Orange Group gneisses of the Lucomagno massif and in the quartzite of Piano Croce Group in the Molare region, Ticino, Switzerland. They were stretched as a result of an extension acting in the plane containing the tourmaline crystals by the tectonic strain of F3 phase of deformation. The crystals show extension parallel to the F3 fold axes. The computation of the values of the finite strain from stretched tourmaline crystals indicates a constriction-type ellipsoid for the tectonic strain of F3 phase of deformation.

Type
Articles
Information
Geological Magazine , Volume 109 , Issue 5 , September 1972 , pp. 445 - 450
Copyright
Copyright © Cambridge University Press 1972

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