Analysis of Miocene Depositional Systems in Offshore Area of Strait of Hormuz Based on 3D-Seismic Data

The aim of this research are to delineate depositional systems of Strait of Hormuz area (Eastern part of Persian Gulf) included turbidity and Mass Transport Complexes (MTCs) which is characterized on seismic by chaotic reflections, scoured bases and mounded external geometry. And also to identify predominant channels types, using 3D-seismic interpretation techniques. The depositional systems are expected to be triggered by sea level variations and salt tectonic, whose volume is proportional to salt flow vigor. Two different sizes of turbidities have been detected in the study area. One is in large scale within the Mishan Formation. The other is somewhat small and only detected within the Aghajari Formation. The latter Formation represents reduction of salt movement intensity and relatively low sedimentation rate. Moreover, big channels are detected within Mishan Formation, whereas, the smaller channels are distinguished within Aghajari Formation. Presence of aforementioned depositional systems in Aghajari and Mishan Formations are clear evidences for salt deformational activities during deposition.