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Forward flexural modelling is a powerful tool for understanding the development of rift basins.

Using interpreted fault data, cross-sectional geometries are recreated by software that incorporates flexural isostatic responses of the crust. The undeformed section is first rifted, then subsides to allow syn-rift and post-rift stratigraphies to be added.

Stretch models the amount of basement rifting, footwall uplift and erosion effects, and subsequent subsidence.

It provides a key tool for:

  • validating pre-rift horizon interpretations
  • locating and quantifying footwall uplift and truncation
  • evaluating erosion of potential footwall reservoirs or deposition of hangingwall reservoirs
  • evaluating the distribution of upper crustal rifting stretching.
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a) Undeformed section is rifted
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b) Same as a) but only showing upper pre-rift stratigraphy vertically exaggerated. Amount of footwall uplift can be measured
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c) Pre-rift has been eroded, syn-rift is deposited
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d) Post-rift stratigraphy is added
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