Arabian Journal of Geosciences

, Volume 7, Issue 9, pp 3599–3610 | Cite as

Biostratigraphy of oligocene succession in the High Folded Zone, Sulaimani, Kurdistan region, Northeastern Iraq

  • Imad Mahmood GhaforEmail author
  • Kamal Haji Karim
  • Varrojan Sissakian
Original Paper


Oligocene and Lower Miocene sediments from High Folded Zone of Iraqi Zagros have been studied paleontologically at south of Sulaimaniyah, Kurdistan Region, NE Iraq. The identified fauna are consisted of (25) genera and species of benthonic and (16) species of planktonic foraminifera. The fauna comprises relatively abundant foraminiferal assemblages of moderate diversity. Based on the stratigraphic distribution of these species, two biozones have been recognized which are NummulitesRotalia and Globoquadrina dehiscens zones. These biozones indicate that the studied sections of Basara and Khewata are of Late Oligocene–Early Miocene age. Based on the microfossils, it has been found that the age of sediments is equivalent to or represents Anah and Serikagni Formations. Some previous studies described Oligocene rocks (Kirkuk Group) as interior sag basin. In the present study, the occurrence of the group inside High Folded Zone and its rich fauna content are used for the discussion of the sag basin versus normal marine water.


Late oligocene Early miocene Foraminifers High folded zone Biostratigraphy Sulaiamiyah Northeast Iraq 


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Copyright information

© Saudi Society for Geosciences 2013

Authors and Affiliations

  • Imad Mahmood Ghafor
    • 1
    Email author
  • Kamal Haji Karim
    • 1
  • Varrojan Sissakian
    • 2
  1. 1.Department of GeologyUniversity of SulaimaniyahSulaimaniyahIraq
  2. 2.GEOSURVBaghdadIraq

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