Biostratigraphy of Kometan Formation in Khashab Well-1, Hamrin Area, Northeastern Iraq.

AL-jubory, Aokab A.; AL-Mutwali, Majid M.

doi:10.32894/kujss.2019.14.1.15

	Biostratigraphy of Kometan Formation in Khashab Well-1, Hamrin Area, Northeastern Iraq.
Kirkuk Journal of Science
Article 1, Volume 14, Issue 1, 2019, Pages 224-240 PDF (1.18 M)
Document Type: Research Paper
DOI: 10.32894/kujss.2019.14.1.15
Authors
Aokab A. AL-jubory^* ¹; Majid M. AL-Mutwali²
¹State company of cement, Mosul, Iraq.
²Department of Geology, Collage of Science, Mosul University, Mosul, Iraq.
Abstract
The present study deals with biostratigraphy of the Kometan from the subsurface section of Khashab well No.1, Hamrin area Northeastern Iraq. Lithologically, the studied Kometan Formation are divided into three units. The studied sequences characterized by different ratios of planktonic and benthonic foraminiferal assemblages. Forty eight planktonic species belonging to fifteen genera and 23 benthonic species belonging to fifteen genera have been recognized. Four biozones are recognized based on the stratigraphic distribution of the planktonic foraminiferal assemblages are recognized within the studied Kometan Formation representing an age ranging from Late Turonian-Santonian.These zones are as following from oldest-youngest: 1- Marginotruncana sigali Partial range Zone (Part) (Late Turonian). 2- Dicarinella primitiva Interval Zone (Early and Middle Coniacian). 3- Dicarinella concavata Interval Zone (Late Coniacian-Early Santonian). 4- Dicarinella asymetrica Total rang Zone (Santonian). : 1- Marginotruncana sigali Partial- range Zone. (Part) (Late Turonian). 2- Dicarinella primitiva Interval Zone (Early of Middle Coniacian). 3- Dicarinella concavata Interval Zone (Late Coniacian- Early Santonian). 4- Dicarinella asymetricaTotal-range Zone (Santonian).
Keywords
Stratigraphy; Cometan; Formation

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