نویسنده
استادیار، گروه زمین شناسی، دانشگاه پیام نور، صندوق پستی 19395_3697 تهران،ایران.
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسنده [English]
For stratigraphic study of Ilam Formation in southwest of Khorramabad stratigraphic section was selected on Poshte-Jangal anticline In the North of the Mamoolan town With a distance of about 45 km from Khorramabad .This Section with a thickness 190 meters consists of invariable Thin to Middle bedde Thickness limestones with Middle Turonian to Early Campanian age which were deposited in a continues sedimentation process. In this section, the Ilam Formation has continues and transitional contacts with the Pelagic Sourgah Formation in the lower boundary and the Gurpi Formation in the upper boundary. In the present study of the Ilam Formation, 12 geniuses, 38]]/] species and 2 biozones of the planktonic foraminifers are recognized. Based on the fossil distribution of the species in this stratigraphic section Two biozones (Assemblage zone) were identified that represent the age of the Late Cretaceous, Early Middle (Thoronian-Campanian) for the Ilam Formation in this stratigraphic section.
کلیدواژهها [English]
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