Writers : Dabaghi Sadr, F.; Seyed Emami, K.; Majidi Fard, M.
Refference : 28th Symposium on Geosciences and the 14th Symposium on Geological Society of Iran
Publishing Year : 1389

Abstract :

Upper Jurassic rocks are well developed at the western part of the Binalud Range (northeast Iran). These consist mainly of limestone, marlstone and marl with few intercalations of sandstone and conglomerate. The thickness of this succession in the study section (Bormahan, northwest of Neyshabour) is 1084 meters and can be subdivided into 6 members. The lower boundary with the dark siliciclasts of ?Kashafrud Formation is sharp. The upper boundary with buff and cliff-forming carbonates of the? Mozduran Formation is transitional. Ammonites are the most important and abundant macrofossils.Totally more than specimens have biozonation been collected, comprising 21 genera and 36 species.The relative abundances at the family level are: Perisphinctidae (42%), Based on the ammonite fauna 15 biozones are recognized which can be fairly good compared with the ammonite of Sub-Mediterranean Province. According to the ammonite fauna an Upper Bajocian to Kimmeridjian age is proposed.

Subject List : Ammonite