Pei, Y, Paton, DA and Knipe, RJ (2014) Defining a 3-dimensional trishear parameter space to understand the temporal evolution of fault propagation folds. Journal of Structural Geology, 66. 284 - 297. ISSN 0191-8141
Abstract
The application of trishear, in which deformation occurs in a triangular zone in front of a propagating fault tip, is often used to understand fault related folding. A key element of trishear, in comparison to kink-band methods, is that non-uniform deformation within the triangle zone allows the layer thickness and length to change during deformation. By varying three controlling parameters independently (trishear propagation/slip ratio, trishear apical angle and fault dip), we construct a three-dimensional parameter space to demonstrate the variability of resultant geometry feasible with trishear. We plot published natural examples in this parameter space and identify two clusters and show that the most applicable typical trishear propagation/slip ratio is 2to3, while the trishear apical angle varies from 30° to 100°. We propose that these findings can help estimate the best-fit parameters for natural structures. We then consider the temporal evolution of specific geometric examples and factors that increase the complexity of trishear including: (1) fault-dip changes and (2) pre-existing faults.To illustrate the applicability of the parameter space and complex trishear models to natural examples, we apply our results to a sub-surface example from the Qaidam basin in northern Tibetan Plateau.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2014, Elsevier. This is an author produced version of a paper accepted for publication in Journal of Structural Geology. Uploaded in accordance with the publisher's self-archiving policy. NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Structural Geology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Pei, Y, Paton, DA and Knipe, RJ (2014) Defining a 3-dimensional trishear parameter space to understand the temporal evolution of fault propagation folds. Journal of Structural Geology, 66. 284 - 297. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 18 Sep 2014 11:45 |
Last Modified: | 03 Nov 2017 04:41 |
Published Version: | http://dx.doi.org/10.1016/j.jsg.2014.05.018 |
Status: | Published |
Publisher: | Elsevier |
Refereed: | Yes |
Identification Number: | 10.1016/j.jsg.2014.05.018 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:80599 |