The Ilam Formation, cropping out in the ZagrosMountain, consists of 195m of cream-colored limestones in the type section, south of Ilam city. This formation has conformable and continuous contacts with the lower Surgah and the upper Gurpi formations. In the present study, 35 foraminifera planktonic species of 17 genus have been identified. The Ilam formation was divided into 4 cosmopolitan biozones on the basis of the planktonic foraminifera which, consist of: Biozone 1-Marginotruncana sigali -Dicarinella primitiva Partial Zone, Biozone 2- Dicarinella concavata Interval Zone, Biozone 3- Dicarinella asymetrica Total -range zone, and Biozone 4- Globotruncanita elevata Partial- range zone. According to these biozones, the Ilam formation was deposited from the late middle Turonian to the early Campanian.
Bakhshandeh,L. , Mohtat,T. , Bakhshandeh,H. and Senmari,S. (2014). Biozonation and Abundance of Foraminifera in the Type Section of Ilam Formation. Scientific Quarterly Journal of Geosciences, 23(92), 75-84. doi: 10.22071/gsj.2014.43654
MLA
Bakhshandeh,L. , , Mohtat,T. , , Bakhshandeh,H. , and Senmari,S. . "Biozonation and Abundance of Foraminifera in the Type Section of Ilam Formation", Scientific Quarterly Journal of Geosciences, 23, 92, 2014, 75-84. doi: 10.22071/gsj.2014.43654
HARVARD
Bakhshandeh L., Mohtat T., Bakhshandeh H., Senmari S. (2014). 'Biozonation and Abundance of Foraminifera in the Type Section of Ilam Formation', Scientific Quarterly Journal of Geosciences, 23(92), pp. 75-84. doi: 10.22071/gsj.2014.43654
CHICAGO
L. Bakhshandeh, T. Mohtat, H. Bakhshandeh and S. Senmari, "Biozonation and Abundance of Foraminifera in the Type Section of Ilam Formation," Scientific Quarterly Journal of Geosciences, 23 92 (2014): 75-84, doi: 10.22071/gsj.2014.43654
VANCOUVER
Bakhshandeh L., Mohtat T., Bakhshandeh H., Senmari S. Biozonation and Abundance of Foraminifera in the Type Section of Ilam Formation. Geoscience, 2014; 23(92): 75-84. doi: 10.22071/gsj.2014.43654
