Writers : Soleyman Noori, Z.; Allameh, M.; Torshizian, H.; Sharifiyan Attar, R.
Publishing Year : 1389

Abstract :

The Abtalkh Formation is one of the sedimentary units of the Kopet-Dagh Basin that has been studied based on palinomorphs, nannoplankton fossils and foraminifers several times up to now. The studied section with geographical coordinates N59 46 54 and E36 55 42, is located in 135 Kilometers along the Mashhad-Kalat road, near the Bafarji Village. It is mainly composed of blue-gray shale with layers of marls. Its lower boundary with Abderaz Formation and upper boundary with Neyzar Formation is conformable and it is about 980m thick. In order to study the Abtalkh Formation Ostracods, 46 samples have been taken. For separating Ostracoda from other sediment, samples were washed and then were studied by SEM. 54 species of 25 genera of Ostracods are identified and most of them are from Platycopidae and Podocopidae family. According to them, age of Abtalkh Formation is Santonian-Masterishtian. Also, it is interpreted that this formation was deposited in a oxic shallow marine environment with warm climatic conditions.

Subject List : Paleoecology