Document Type : Original Research Paper
Authors
1 Assistant Professor, Department of Geology, Payam Noor University, Tabriz, Iran
2 M.Sc. Student, Department of Geology, Payam Noor University, Tabriz, Iran
Abstract
The Illanqareh Formation consists of sandstone, shale, dolomite, extrusive igneous rocks, and limestone. This Formation is about 400 m thick and crops out in the west of Illanlu village, south of the Aras dam, north of the West Azarbaijan province. The clastic deposits of the Illanqareh formation attributed to the late Devonian and the upper carbonate division belongs to the early Carboniferous. The study of prepared thin sections resulted in recognizing 15 species related to 9 genera of 8 foraminifera families. The comparison of identified foraminifera' assemblage in the studied stratigraphical section with those from other Carboniferous formations of Iran and the world indicated a Tournasian- Visean age for the marine deposits of this formation. The Illanqarah formation in the Illanlu section overlies the early Devonian Muli formation and underlies the early Permian Doroud formation both disconformably.
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