Facies and depositional environments of the Shurijeh Formation in stratigraphic section of Hamam Ghaleh, south of Kalat- e Naderi

The Shurijeh Formation forms a gas reservoir in the eastern Kopet Dagh basin. Terrigenous and evaporite sediments of this formation have been deposited, due to tectonic phase of the Late Cimmerian in a vast area in the eastern Kopet Dagh basin, in continental and rarely marine environments in the Late Jurassic- Early Cretaceous time. In order to study the depositional environments and presenting a model for this formation, a stratigraphic section was measured and studied in the south-southwest of Hamam Ghaleh village. Shurijeh Formation has a thickness of 953.5 m in the studied area and in contrast to other known sections, is composed of five lithological units. In addition to terrigenous and evaporite deposits, there are two carbonate units with a high thickness. Petrographic study of 402 thin sections shows that these sediments were deposited in a shelf platform in four facies belts, including tidal flat, lagoon, shoal and shallow open marine