پديد آورندگان :
Khodashenas، N. نويسنده Department of Geology, Faculty of Sciences, Islamic Azad University Mashhad branch, Mashhad, Iran. , , Aryaei، A.A. نويسنده Department of Geology, Faculty of Sciences, Islamic Azad University Mashhad branch, Mashhad, Iran. , , Ashouri، A.R. نويسنده Center of Excellence for Paleontology, Ferdowsi University of Mashhad, Mashhad, Iran. ,
چكيده لاتين :
In this research the biostratigraphy in Esfiyukh Mountain (5 km of North-east of Torbat-e-Heydarieh) is studied for the first time. The deposits in this section are about 175 meters thickness; lithology consists of alternative layers of medium bedded to very thick bedded limestone. This part overlies on brown-dark red sandstone & Jurassic deposits with angular unconformity and is overlain by late Cretaceous sediments with unconformable contact. The first study of benthic foraminifera and calcareous algae identification is the survey of paleoecology condition of benthic foraminifera, that 60 thin sections were studied. In this study ten genera and species of calcareous algae Salpingoporella cf. parapiriniae (Carras et al., 2006), Cylindroporella sp. (Elliot, 1979), Rajkella sp. (Dragastan & Bucur, 1993), Neomeris cretaceous (Stewmann, 1978), Triploporella sp. (SRIVASTAVA, 1978), (BUCUR, 1993), (Granier et al., 2000), Terquemella sp. (Radoicic, 1978), Boueina sp., Macroporella sp., Falsolikanella danilovae, (Radiocic ex1982), (Berger,1992)ag., Actinoporellageredeensis, (CONRAD,1970), Salpingoporella aff. hasi, ,(Carras et al, 2006) has been known. With view to association of benthic foraminifera the age of the studied section Barremian t-Aptian is determined.
