Depositional environments and sequence stratigraphy of the Kangan formation in the Kish field

The Kangan Formation (Lower Triassic) is one of the most important petroleum reservoirs in SW Iran and Persian Gulf that belong to the Dehram Group. Facies analysis from core and cuttings of this formation in theKish Field led to the recognition of 14 facies, indicating deposition in tidal flat, lagoon and oolithic barrier facies belts. Facies types and their facies belts reveal deposition in the inner part of a homoclinal ramp platform. Vertical variations of microfacies and well log analysis especially Gamma Ray log demonstrate that the Kangan Formation consists of three third order depositional sequences. Each sequences consisting of transgressive systems tract (lagoonal and tidal flat facies) and highstand systems tracts (barrier/ shoal facies) which are bounded by a type 2 unconformity.