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Strain and shape analysis from the deformed pyrites with a note on their preferred orientation

Published online by Cambridge University Press:  01 May 2009

R. Sen  and
A. D. Mukherjee
R. Sen
Affiliation:
Belikvassli Gruber A/S, North Norway
A. D. Mukherjee
Affiliation:
Institütt for GeologyUniversitet i Oslo, Norway
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Summary

From the distribution and orientation of final axial ratios of deformed elliptical pyrites and boudins, initial distributions are determined. A strain ellipse is then reconstructed using the shape factor grid. The long axis of the strain ellipsoid represents the trend of regional fold axis (the fold is of flexural slip type). The dimensional orientation (elongation) of the pyrites and the boudins is referred to the homogeneous strain components in the fold. Petrofabrics of the pyrite cubes indicate that they have a preferred orientation.

Type
Articles
Information
Geological Magazine , Volume 109 , Issue 4 , July 1972 , pp. 323 - 329
Copyright
Copyright © Cambridge University Press 1972

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