Writers : Allahpour,Esmaeil
Refference : The 21st Symposium on Geoscience;Tehran
Publishing Year : 1381

Abstract :

According to considerable presence of andesitic components in active geodynamic regims and their useful results , geologists attend to study these components.
In this research paleogen andesites of north Birjand tertiary complex and their petrogenetic parameters have been studied;� regard to the index andesitic complexes.
Results show that this rocks belong to the active continental margin orogenic andesites.
Calcoalkaline magma have evidences such mixing with relatively thick crust materials, that this mixing influence variety of main and trace elements of parent magma.
Follow evidences, invers zonation in some pyroxene phonocrysts and existance of basic inclusions supported the magma mixing idea.

Subject List : Andesit