GSINET | Geological Survey of Iran , North - East Territory

Calcareous Nannofossils Biostratigraphy of Neyzar Formation in Type Section (Tange-Neyzar)

Writers : Hadavi,Fatemeh;Pour esmaeel,Akram
Refference : Geosciences Scientific Quarterly Journal,No.:65,P.:36
Publishing Year : 1386

Abstract :

Nannofossils are suitable for biostratigraphical studies since they are abundant, planktonic, rapidly evolving and largely cosmopolitan, especially in the Late Cretaceous.
According to this, due to lack of precise Paleontological study, the nannofossils of Neyzar Formation have been investigated in type locality. This formation consists of thick- bedded glauconitic sandstone, shale and a sandy limestone bed in the upper part.
The Neyzar Formation conformably overlies the Abtalkh Formation and is itself conformably overlain by the Kalat formation.
In this study, for the first time, 22 genera and 42 species of nannofossils have been identified. Based on these nannofossils, the age of this section is Late Maasrichtian corresponding to CC25- CC26 (Sissingh, 1977) (equivalent to CC25c-CC26a-b, Perch
Nielsen, 1985)�

Subject List : biostratigraphy