Hostname: page-component-8448b6f56d-qsmjn Total loading time: 0 Render date: 2024-04-18T07:01:40.291Z Has data issue: false hasContentIssue false
  • English
  • Français

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
Get access Rights & Permissions [Opens in a new window]

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

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Badoux, H. 1963. Les belemnites tronconnées de Leytron (Valais). Bull. Lab. Geol. Mineral. Geophys. Musée Géol. Univ. Lausanne, 138, 1–7.Google Scholar
Brace, W. F. 1960. Analysis of large two-dimensional strain in deformed rocks. 21st Intern. Geol. Congr. Copenhagen, 18, 261–9.Google Scholar
Brace, W. F. 1961. Mohr construction in the analysis of large geological strain. Bull. geol. Soc. Am. 72, 1059–80.CrossRefGoogle Scholar
Chadwick, B. 1968. Deformation and metamorphism in the Lukmanier region, Central Switzerland. Bull. geol. Soc. Am. 79, 1123–50.CrossRefGoogle Scholar
Cloos, E. 1947. Oollite deformation in south Mountain fold, Maryland. Bull. geol. Soc. Am. 58, 843–918.CrossRefGoogle Scholar
Gay, N. C. 1969. Analysis of strain in the Barberton mountain land, E. Transvaal, using deformed pebbles. J. Geol. 77, 377–96.CrossRefGoogle Scholar
Hossack, J. 1969. Pebbles deformation and thrusting in the Bygdin area (Southern Norway). Tectonophysics. 5 (4), 315–39.CrossRefGoogle Scholar
Ramsay, J. G. 1967. Folding and fracturing of rocks. McGraw-Hill Book Co., New York.Google Scholar
Ramsay, J. G. & Graham, R. H. 1970. Strain variation in shear belts. Can. J. Earth Sci. 7, No. 3, 787–813.CrossRefGoogle Scholar