Mechanical State

  • W. D. Means


This chapter introduces the description of motions and forces in a rock body at a single moment in time. The instantaneous condition of a rock system is referred to here as the mechanical state of the system. We distinguish carefully between quantities describing the instantaneous state and other quantities comparing two or more states, which are discussed in the next two chapters.


Reference Frame Position Vector Hanging Wall Instantaneous Velocity Pore Fluid 
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Notes and References

  1. The rules for adding and subtracting vectors are given, for example, by Spiegel (1959, pp. 1–2). Summaries of vector analysis that cover all the applications in this book are given by Spiegel (1959, pp. 1–4) and by Malvern (1969, pp. 10–13). Similar summaries are found in the first pages of many books on continuum mechanics.Google Scholar

Copyright information

© Springer-Verlag New York Inc. 1976

Authors and Affiliations

  • W. D. Means
    • 1
  1. 1.Department of Geological SciencesState University of New York at AlbanyAlbanyUSA

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