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Book Chapter

Chapter 1: Orientation of Anisotropic Minerals in a Stress Field

By
Gordon J. F. MacDonald
Gordon J. F. MacDonald
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Published:
March 01, 1960

The equilibrium orientation of an anisotropic mineral in a stress field is one in which the potential energy of the external forces plus the potential energy of deformation is minimized. For materials obeying a linear elastic stress-strain law, the minimum total potential energy is equivalent to a maximum Helmholtz free energy in an isothermal system or a maximum internal energy in an adiabatic system. The minimum potential-energy theorem is applicable to the orientation of minerals in rocks undergoing plastic deformation provided temperature and elastic strain are sufficient parameters to describe the thermodynamic state of the mineral undergoing isothermal plastic flow.

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Contents

GSA Memoirs

Rock Deformation (A Symposium)

David Griggs
David Griggs
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John Handin
John Handin
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Geological Society of America
Volume
79
ISBN print:
9780813710792
Publication date:
March 01, 1960

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