Lithostratigraphy and Sedimentary Environment of the Jahrum Formation in two Anticlines of Jahrum and Tudej

In this study two stratigraphic sections named Tang-e Ab as type section and Tang-e Nimbashi analyzed in order to study lithostratigraphy and microfacies of Jahrum Formation in Fars province. Both sections, Tang-e Ab in northern flank of Jahrum Anticline (East of Jahrom) and Tang-e Nimbashi in northern flank of Tudej Anticline (West of Estahban) located in Interior Fars Sub-Zone at Zagros folded belt. Tang-e Ab section included 450 meters of conglomerate, limestone, nodular marly limestone, dolomitic limestone and dolostone with thin, medium, thick and very thick bedding and Tang-e Nimbashi section included 562 meters of limestone, marly Limestone, nodular marly limestone, dolomitic limestone and dolostone with very thin, thin, medium, thick and very thick bedding. The result of field and laboratory observations is determination of 10 lithostratigraphic unit and 10 microfacies class in Tang-e Ab and 7 lithostratigraphic unit and 11 microfacies class in Tang-e Nimbashi, in both Sections 3 sub-environments included: open marine, lagoon and peritidal and sedimentary settings corresponded on a carbonate platform of homoclinal ramp.