Calcareous Nannofossils Biostratigraphy of Tanjero Formation at Azmer anticline Northern Iraq

Rahme Fares Al-Sulevani; Omar Ahmed  Al-Badrani

doi:10.24996/ijs.2021.62.5.23

Authors

Rahme Fares Al-Sulevani Department of Geology, College of Science, Mosul University, Mosul, Iraq
Omar Ahmed Al-Badrani Department of Geology, College of Science, Mosul University, Mosul, Iraq

DOI:

https://doi.org/10.24996/ijs.2021.62.5.23

Keywords:

Calcareous nannofossils, Biostratigraphy, Cretaceous, Iraq

Abstract

Seventy three species of calcareous nannofossils are recorded from the studied section of Tanjero Formation at Azmer anticline, Sulimaniya, Northern Iraq. The studied section reveals four biozones arranged in an ascending order from oldest to youngest as follows; Tranolithus phacelosus Interval Biozone (CC23) Part, Rienhardtites lives Interval Biozone (CC24), Arkhangelskilla cymbiformis Interval Biozone (CC25), and Nephrolithus frequens Rang Biozone (CC26) Part. These biozones are correlated with other calcareous nannofossil biozones of both local and regional sections, leading to conclude a possible age of Late Campanian- Maastrichtian.