Biostratigraphy of the base of Khangiran Formation based on Planktonic foraminifera at Type section, Yaghol village, north of Dargaz city, west of Kopet-Dagh basin

Document Type : مقالات پژوهشی

Authors

• Mohhamd Mehdi Hosseinzadeh Firozian
• Mohammad Vahidinia

10.22067/sed.facies.v4i2.10217

Abstract

In this study, biostratigraphy of the base of Khangiran Formation, based on planktonic foraminiferal at type section, are studied and correlated with standard biozones. Planktonic foraminiferal assemblage at the base of mention formation in Yaghol village section, north of Dargaz city, west of Kopet-Dagh basin, consists of 31 species belong to 10 genera which these assemblage shown tropical to subtropical climatic conditions. In this research, 6 biozones have been recognized respectively: Globanomalina chapmani Interval Range Zone, Acarinina soldadoensis Interval Range Zone, Turborotalia prolata Interval Range Zone, Acarinina pentacamerata Interval Range Zone, Hantkenina nuttali Interval Range Zone, Pseudohastigerina wilcoxensis Assemblage Zone, which they are comparable with zones P6 to P11 of tropical – sub tropical schemes. Therefore based on this study, the age of Early Eocene to Early Middle Eocene assigned for base of the Khangiran Formation.

Keywords

• Biostratigraphy
• Khangiram Formation
• Planktonic foraminiferal
• eocene
• Type section
• Kopet-Dagh basin

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