بایو¬استراتیگرافی بخش فوقانی سازند آیتامیر بر مبنای

Calcareous nannoplankton from Itamir Formation

In Shoorab (Kopet-Dogh Range)

F.Hadavi and H.Mousazadeh

Abstract Itamir Formation consists of glauconitic sandstone and olive-green shale traceable throughout the Kopet-Dogh Range between the black shale of Sanganeh Formation below, and light colored marls of Abderaz Formation above (Stocklin, ۱۹۷۱). For the first time ۲۴ samples are taken for examination from shaley part of Itamir Formation. As a result of this study ۱۸ genera and ۲۹ species of nannofossils are introduced. Based on the obtained nannofossils,the age of this formation in studied area is Cenomanian-Santonian.