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(a) Restoration model for an isolated thrust structure from Niger Delta. The geometry has been obtained from Higgins et al. (2009). The horizons are numbered consistently with the reference; i.e. h1 for the model base to h11 for the top surface. Note that intra-formation fault tips have been neglected. (b) Prescribed initial porosity distribution with depth. This porosity distribution is representative of Niger Delta sediments and has been obtained from the field data published by Krueger and Grant (2011). (c) Final restored geometry after restoration of 8 formations.