Writers : Valipour, Fazel; Sookhtanlou, Mohammad Ebrahim; Ghanavati, Hamed; Sharifi, Mehdi; Bashiri, Ehsan
Refference : Proceeding of the first applied geological congress of Iran(volume.2)
Publishing Year : 1386

Abstract :
Comparison of the mashhad and anjeer valley (dre-eh-e-An) ophilite complexes shows that the in the mashhad ophilote complex mafic rocks are less extended than the ultramaphic. These rooks are found in pillow lava from in the mashhad ophilite complex mafic are less extended than the ultramaphic. These rocks are formed in pillow lava from in the mashhad ophilite complex whereas this is not in the Anjeer valley (dereh-e-Anjeer). The occur of plagiogranite in Anjee valley (Dereh-e-Ajeer) & their absence in the mashhad complex is the obvious difference of the mentioned ophilites in these area.� These rocks observed to Amphibolite facies in Mashhad area and effected to Epidot-Amphibolite facies in Dereh-e-Anjeer valley.
In this area oceanic crust had been subducted below the Turan plate by the end of Triassic. Comparison of Mashhad & Dereh-e-anjeer ophilete types shows that these ophoites both belong to the harzburjite and in dereh-e-Anjeer valley belong to boronsite type.
Occurrence of harzburgites is indicative of high partiel melting and the toleitic nature of� the magma in the area.
Subject List : active tectonic