Unravelling patterns of folding in high-strain zones

Research output: Contribution to journalArticlepeer-review


The ability of geo-materials to deform and flow at a variety of scales and rates, both within the Earth and on its surface, results in a broad range of structures being generated. The careful recording, interpretation and reading of deformation patterns, including fold and fabric geometries permits evaluation of shear zone kinematics. Directions of shearing may be calculated via the Axial-planar Intersection Method (AIM) which incorporates analysis of minor fold vergence with axial-planar rotations. The geometry of sheath fold pairs may also be used to determine shear sense with sheaths closing in the transport direction typically displaying greater hinge-line curvilinearity.
Original languageEnglish
Pages (from-to)74-77
Number of pages4
JournalTrabajos de Geología
Publication statusPublished - 2009


  • shear zones
  • kinematics
  • sheath folds
  • flow perturbations


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