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Significance of pebble and mineral lineation in the Chamba syncline of Punjab Himalaya, Himachal Pradesh, India

Published online by Cambridge University Press:  01 May 2009

V. C. Thakur  and
S. K. Tandon
V. C. Thakur
Affiliation:
Wadia Institute of Himalayan Geology, Delhi University Campus, Delhi-110007, India
S. K. Tandon
Affiliation:
Wadia Institute of Himalayan Geology, Delhi University Campus, Delhi-110007, India
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Summary

A pebble lineation has been produced as a result of the first phase deformation that formed the Chamba syncline and the associated slaty cleavage. The lineation indicates the principal direction of maximum elongation of the finite tectonic strain ellipsoid of the first phase deformation and lies nearly normal to the axial direction of the Chamba syncline. The mineral lineation and the long axes of deformed crinoid ossicles show paralelism to subparallelism with the pebble lineation. The second and third phases of deformation, which are characterized by open style folds and associated crenulation cleavage, appear to be of weak magnitude and have not modified the orientations of pebble lineation.

Type
Articles
Information
Geological Magazine , Volume 113 , Issue 2 , March 1976 , pp. 141 - 149
Copyright
Copyright © Cambridge University Press 1976

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