Sequence stratigraphy and microfacies analysis of Sarvak Formation in southwest of Firozabad area

In order to identify microfacies of the Sarvak Formation in Firozabad area, 137 samples, considering microfacial changes and lithological properties, were collected and studied. 13 microfacies and 3 depositional sequences, bounded by SB2 boundaries, in these sequences were identified. Microfacies analysis and field observations revealed that the upper and lower parts of Sarvak Formation in study area have been deposited in 2 relatively different environments; sedimentation in the lower part has taken palace in an open shelf, while upper part deposited in a carbonated ramp setting. Sequence 1 (Late Albian age) includes a set of deepening TST parasequences and a set of shallow HST parasequences that are concurrent with K110 sequence in Arabic plate. Sequence 2 (Late Albian-Early Cenomanian age) includes a set of deepening TST parasequences and a set of shallow HST parasequences that are concurrent with K120 sequence in Arabic plate. Finally, Sequence 3 in (middle-late Senomanian age) includes a set of deepening TST parasequences and a set of shallow HST parasequences that are concurrent with K130 sequence in Arabic plate.