Document Type : Original Research Paper
Authors
1 Assistant Professor, School of Earth Sciences, Damghan University, Damghan, Iran
2 Professor, Geological School, Tehran University, Tehran, Iran
3 Assistant Professor, Faculty of Science, Imam Khomeini International University, Ghazvin, Iran
Abstract
The Gurpi Formation was studied from different aspects at two sections, Farhadabad and Kavar, in southwest and southeast of Ilam where it is composed of 205 m and 158 m of grey to blue marl and shale beds and occasionally thin beds of argillaceous limestones with two formal members of Seymareh (Lopha) and Emam-Hassan. In order to reconstruct paleoclimate during depositional course of the formation, paleontological and palynological data (ratio of specialist to generalist foraminifera (e.s/e.g) and warm-temperate waters dinocysts and spore and pollen grains) were used statistically. The results show that the Gurpi Formation is mainly deposited in a warm-humid climate with two sharp decreases happening in temperature in early Maastrichtian and Danian.
Keywords
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