Writers : Bazmi,Mostafa;Pour Sahafi,Seyed Mohammad;Mazaheri,Seyed Ahmad
Refference : The 23st Symposium on Geoscience;Tehran
Publishing Year : 1381

Abstract :
The study area located in the centeral Iranian zone in the west of Torbat Jam in the Northeast of iran .Feild and petrographic studies indicate that the composite of volcanic rocks includes Andesite, Trachyandesite, Dacite, Andesitbasalt and Tuff that its age is paleocen-Eocen .In term of tectonomagmatism comparision main elements oxides and trace elements in the lithostratigraphic units of the area with other world area mainly dependent to continental active margin.the ordinary process of differentiation in magma is reflected through the nature of the main elements and trace elements. But microscopic studies such as diseqilibrium textures in plagioclases (zoning,corrosion.) and appasitization of hydrous minerals like amphibole indicates the contaminate magma.
Subject List : Volcanism