Palynology of Shemshak Formation in Ab-Ali Area,North-East Tehran

Category Paleontology and Stratigraphy
Group GSI.IR
Location The 24 Symposium of Geosciences
Holding Date 27 August 2007


 In this stady 25 genera (31 species) of spores and 3 genera( 4species) of gymnosperm pollen grians from the Shemshak Formation at the Ab-Ali area, North East Tehran, were recognized. This study is done due to the preparation of the Ab-Ali map(1/25000) project. In the studied area the total thickness of the Shemshak Formation is 2157 meters. The Rhetian-Aalenian ages were proposed for the studied palynomorphs. Two assemblage zones are introduced and on the basis of stratigraphical ranges of index  palynomorphs