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Surface geology, seismic reflection, and well data from the eastern Sulaiman fold-and-thrust belt (SFTB) were integrated to analyze its structural geometry, deformation style, foreland structure development, and tectonic shortening. The N-S oriented fold belt's deformation front has a monoclinal expression over similar to 350 km along the eastern edge of the SFTB. The cross-section shows a similar to 9 km thickness of platform sequences that are detached from the basement by an inferred decollement in Paleozoic strata. The base of Cretaceous strata is similar to 6 km deep in the foredeep syncline, rising similar to 7 km in the foreland in the absence of a major thrust, and is interpreted as a thin-skinned, passive-roof duplex style of deformation. The duplex sequence of Jurassic and older strata are separated from the Cretaceous and younger roof sequence, which is intact over foreland structures for similar to 60 km. A balanced structural cross-section of this area restores to an original length of 172 km, implying similar to 112 km (65%) of shortening since 6 +/- 2 Ma, with rates of 18 mm/yr. This is greater than the similar to 50% shortening along a 359 km long N-S balanced cross-section across the SFTB, but is likely to occur along stacked duplexes with high relief along the eastern SFTB.