Writers : Ariaei, Ali Asghar; Motamedshariati, Maryam; Seidemami, Kazem; Reissadat, Seid Naser
Refference : proceeding of the first applied geological congressof iran (volume.2)
Publishing Year : 1386

Abstract :
Two stratigraphic sections in the Chaman-Bid Formation east of Mashhad have been measured and their ammonite fauna studied. Based on ammonites the stratigraphic range of the Chaman-Bid Formation at Narband section is Bathonian to Oxfordian and at Radar section late Bajocian to Callovian.
The reported ammonites shows affinity with assemblage fauna and some ammonite biozones which is suggested for Europe and Mediterranean areas. The ammonite fauna corresponds more or less to those reported from Alborz and Central Iran, which indicates that the basins of Koppeh-Dagh, North and Central Iran were connected to each other. The studied ammonite fauna shows close relations to the same-aged ammonites of Europe, especially to the Sub-Mediterranean Province.
Subject List : Ammonite, biostratigraphy