Effects of object ellipticity ion strain, and implications for clast-matrix rocks

Susan Treagus, Susan H. Treagus, Jack E. Treagus

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We examine the influence of object shape on strain, taking the example of an elliptical object in a matrix of different viscosity. The Eshelby-Bilby equation for the cross-sectional strain of circular cylindrical objects in a matrix of different viscosity is differentiated, to express the relationship of developing sectional ellipticity on incremental strain. This leads to an expression for the strain of initial elliptical objects whose axes are parallel or perpendicular to pure shearing. Graphs show that competent elliptical objects with axial ratios of Ri = 3 or more, will strain significantly more than circular objects of the same viscosity; less if the objects are incompetent. While the effect is likely to be insignificant for competent objects with initial ellipticity of
    Original languageEnglish
    Pages (from-to)601-608
    Number of pages7
    JournalJournal of Structural Geology
    Volume23
    Issue number4
    DOIs
    Publication statusPublished - Apr 2001

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