The Calcareous Nannofossils Biostratigraphy of the Cretaceous Red Beds in Shiranish Formation, Hiran in Erbil Governorate and Smaqoli area in Sulaimaniya Governorate, Northern Iraq

Authors

  • Alaa S. Al-Zubaidi Department of Geology, College of Science, Mosul University, Mosul, Iraq.
  • Omar O. Al-Badrani Department of Geology, College of Science, Mosul University, Mosul, Iraq.

DOI:

https://doi.org/10.46717/igj.56.2A.15ms-2023-7-24

Keywords:

Calcareous nannofossils; Biostratigraphy; Campanian; Maastrichtian, Iraq

Abstract

On the basis of the stratigraphic ranges of the reported calcareous nannfossils for several species, two sections of the Shiranish Formation from the Hiran in the Erbil Governorate and the Smaqoli area in Sulaimaniya Governorate, Northern Iraq, are analyzed. Four biozones are visible in the examined region, grouped as follows from oldest to youngest: Uniplanarius gothicus Interval zone;  Tranolithus phacelosus Interval zone; Rienhardtites lives Interval zone; Micula murus Interval zone. The relationship between these biozones and those of other calcareous nannofossil biozones from local and regional sections allows scientists to determine that these fossils are from the Late Campanian to Early Maastrichtian period.

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Published

2023-07-26