سال انتشار: ۱۳۸۷

محل انتشار: همایش بین المللی ژئولیت ایران

تعداد صفحات: ۶

نویسنده(ها):

Kamaladdin Bazargani-Guilani – Department of Geology, University of Tehran, Tehran 14155-6455, Iran
Somayyeh Rezaei – Department of Geology, University of Tehran, Tehran 14155-6455, Iran

چکیده:

Zeolitic succession in the Sartakht area is located 20 kilometer of SE-Semnan and north of Central Iran
zone. Based on optical microscope and geochemical analysis, primitive rock is pyroclastic. On the basis of
geochemical composition of rare earth element, primary tuffs were rhyodacite to dacite in composition.
Volcanic glass fragments are the most important and suitable starting material, Owing to their high chemical
reactivity, their bulk composition is similar to zeolites. The process of diagenesis was hydrolysis associated
with the removal of SiO2, K2O, and Na2O from precursor materials and variable changes in CaO.