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Abstract

Early to middle Eocene Habib Rahi Limestone was investigated in Sulaiman Range at four outcrops in Afiband and Mughal kot areas, where its measured thickness range from 25 to 40 m. The formation comprehensively studied based on sedimentological parameters that lead to its paleoenvironment. According to field observations, the lower part of the formation mainly comprises fossiliferous limestone, the middle part with platy limestone bedded with chert, and upper part associated with marl and shale. Moreover, formation makes conformable lower and upper contacts with Baska Shale and Domanda Shale, respectively. Under a microscope, five microfacies of the Habib Rahi Limestone were examined, which are abundantly associated with larger benthic foraminifera of Assilina spinosa, Assilina subspinosa, Nummulites mammillatus, and Nummulites atacicus. Therefore, litho- as well as microfacies of the Habib Rahi Limestone depicts the shallow shelf marine depositional environment of the formation.