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  • Article title : Trtiary Magmatism in the Jirandeh region,North of
    Article type : Petrology
    Location : 20th symposium on geosciences

    Fulltext :

       General:
         This paper is a review on the Tertiary magmatism in the 1:100,000 . sheet of Jirandeh.The study region has been covered with Eocene volcanic rocks that contain andcsy-basalt,andesite,Traky andesite,dacite-andesite lavas and acidic to intermediate pyroclastic rocks as litic-crystal tuff.
    Tertiary rocks have intruded by Gabbroic and Granodiritic plutons.They are high K calk-alkaline rocks.
    Geochemical results show that volcanic activities have done on the active continental margin.Granitic masses are I-type and are CAG Granites.
    Gabbroic masses are related to the continental active margin environment.

    Celebration date : 16 Wednesday April 2008
    
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