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

Subject Areas :

Maryam Peyravi ¹ , Mohammad Reza Kamali ² , Hossain RahimPour- Bonab ³

1 - دانشجوی دکتری، گروه زمین شناسی،دانشکده علوم پایه، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران، تهران
2 - دانشیار، گروه ژئوشیمی، پژوهشگاه صنعت نفت
3 - استاد، پردیس علوم، دانشگاه تهران

Received: 2016-09-07 Accepted : 2016-09-07 Published : 2012-09-22

Keywords: Barrier, Kangan Formation, Tidal flat, Lagoon, Homoclinal ramp,

Abstract :

The Kangan Formation (Lower Triassic) is one of the most important petroleum reservoirs in SW Iran andPersian 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 faciesbelts. 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 KanganFormation consists of three third order depositional sequences. Each sequences consisting of transgressivesystems tract (lagoonal and tidal flat facies) and highstand systems tracts (barrier/ shoal facies) which arebounded by a type 2 unconformity