Biostratigraphy and Lithostratigraphy Qom Formation from Shahanjarin Section in Garmab City, Zanjan
Abstract
Qom Formation is revised in shahanjarin section from Garmab city (Zanjan provaince) for the first time. Only ‘F’ member is exposed in this area. This formation is 232 m in thick and subdivided into 3 units. It consists of thick and thin bedded limestones. The Qom Formation is unconformably overlain lower red Formation and the top of this formation is uncertain. About 21 genera and 4 species of benthic foraminifera and 2 genera of planktonic foraminifera together with bioclastic fragments (Algae, Beryozoa, Mollusks etc.) are recorded in this section. The biozonation is established by the presence of the benthic foraminifera and followed by : Borelis melo curdica-Meanderopsina iranica Assemblage Zone.