A scientific study was conducted at the University of Basrah by Dr. Muhannad Hamid al-Jabri, researcher Naisa Hassan Sawadi, and A.Dr. Hamid Sultan is a lecturer at the University of Babylon with the title (lithological analysis and stratigraphic evolution of the shiransh formation in the late Cretaceous (Maastrichtian) in the mercasur region, northern Iraq) 
The study, which was published in the Iraqi geological Journal and classified as scopes Q3, indicated conducting a rock and surface analysis to understand the sequence and stratigraphic evolution of the Shiranish formation in the mercasur area within the Erbil governorate, the liluk section in northern Iraq 
The variation in the sequence of the studied area indicates the relationship between sea level and the change in carbonate production; these analyzes explain the sedimentary environment and the basic aspect of stratigraphic analysis.
The results of the study concluded that the depositional environments of the formation in this region were summarized by four environments, namely: the slope environment, the slope tip environment, the deep shelf environment, the deep sea environment or the deep cratonic Basin, and the Stratigraphic development of the Shiranish formation on the surface of the incompatibility of the formation, which separates it from the lower bakhma formation, and the sedimentary stratigraphic sequence that connects the formation in Iraq with other areas in the Arabian plate.