عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Ophiolite outcrops and ophiolite melanges have spread widely in Iran. Ophiolite is referred to as an assemblage of mafic and ultramafic rocks, which may be merged by tensile stresses. Ophiolite; ophiolite complex, ophiolite series, was finally told that the colored mélange colored melange more applied. Due to the variety of research done in this field and the lack of a review article, a new research work has been done. The purpose of this article is review the geochemistry and tectonic environment of the formation of ophiolitic zones of Iran. The results of this research show that in terms of dispersion, Iranian ophiolites are a type of melange that can be distinguished in the two groups of Zagros radiolarite ophiolite belt and Central Iranian ring belt. In the southwest of Zagros, there are two separate parts, called Kermanshah and Nayriz ophiolites. Central ophiolites, which are named after central Iran ring ophiolite belt include (Sabzevar, north of Torbat Heydarieh, south of Birjand) and west of central Iran (Mako-Khoy), and east of central Iran (northern Makran and northern Nain) due to subduction, part of the upper mantle and the crust. The remnant of ocean is left in the form of an ophiolite melange. Also, the results of many geochemical studies on Iranian ophiolites have shown the dependence of Mid-ocean ridge basalts (MORB) and island arc tholeiitic (IAT). Both groups of subalkaline and alkaline basalts have been identified in the ophiolites of Kermanshah. In the ophiolites of Neyriz and Shahre-Babak, several types of basalts that have IAT properties have been identified and reported. The chemical composition of Sabzevar ophiolite also shows the geochemical characteristics of the IAT type. Two types of basaltic lava have also been identified in the Ophiolite of the Bande-Ziarat (W. Makran).