Stratigraphic distribution and depositional environment of the Chaya Formation along the northwestern coast of Saurashtra Peninsula, Western India

Neogene-Quaternary sedimentary basin of Saurashtra along the northwestern coast of India is of great interest for its importance in sea-level and palaeoclimatic studies. Lithostratigraphically, the lithic-units have been grouped into Gaj, Dwarka, Miliolite, Chaya, Katpur and Mahuva Formations in ascending order. Present paper deals with stratigraphic distribution and depositional environment of individual sections of the Chaya Formation. With the addition of a new member, the Chaya Formation now consists of three members; viz. Okha Shell Limestone Member, Aramda, Reef Member and Porbandar Calcarenite Member.