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Palinspastic Reconstruction and Forward Modelling |
Exxon Production Research Company, PO Box 2189, Houston, TX 77252-2189, USA
A review of the published literature indicates that antithetic oblique shear, at an angle of 30 ± 10° measured from the vertical, is the most appropriate algorithm for quantitative modelling of geometric relationships between downward-flattening normal faults and the strata in their hanging walls. This conclusion is based on 2D analysis of 11 natural examples (listric normal faults without apparent salt involvement, shale mobility, or footwall deformation) and selected laboratory physical models. It may not apply where mobile salt, mobile shale, or significant footwall tilting or deformation is present. Antithetic oblique shear, like all modelling algorithms, does not accurately simulate natural deformation processes, which are significantly more complex.
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