lithostratigraphy and biostratigraphy Studies of Eocene sediments of Halegan well of folded Zagros

Subject Areas :

فرشته GHaseminia ¹ , بهاءالدین Hamdi ²

1 - کارشناس ارشد چینه شناسی و فسیل شناسی، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات
2 - استاد یار دانشگاه آزاد اسلامی، واحد تهران شمال

Received: 2016-09-05 Accepted : 2016-09-05 Published : 2009-03-21

Keywords: Biostratigraphy, Pabdeh Formation, planktonic foraminifera, Lithostratigraphy,

Abstract :

In order to study and inspect of biostratigraphy and lithostratigraphy of Eocene sediments of Haleganwell in folded zagros 100 thin microscopic sections of this well’s samples was studied. Mentionedstudies caused to recognize 12 genus and 25 species of Planktonic foraminifera. According to spreadstratigraphy planktonic foraminifera 3 Biozone (P6, P13, P16/P17) that separated and introduced forEocene sediments in this well by D.Verga & R.Rettori (2003). Subsurface of section stratigraphy iscompared with wynd Biozons (wynd,1965). According to recognized and separated biozons, Wyndbiozonation is included 45, 47, 50. In this essay Pabdeh formation in Halegan well was introduced andcompared both D,Verga & R.Rettori (2003) and Wynd (1965) Biozone. Results of comparison revealsthat the best zonation for Pabdeh formation in Halegan well is D.Verga & R.Rettori (2003) Biozone.Pabdeh formathion is included a sequence of shale, marl, argillaceous limestone layers and their colorsare usually gray, withe-brown in Halegan well. Pabdeh formation had been formed high depth of sea.It is an evidence for depth of zone in this area in Eocene period. According to this studies it seemsHalegan well had been full of water in Eocene period the most onlap of sea had been in this period