Document Type : Original Research Paper


1 Associate Professor, Department of Geology, Faculity of Natural Sciences, University of Tabriz, Tabriz, Iran

2 Professor, Department of Geology, Faculity of Natural Sciences, University of Tabriz, Tabriz, Iran


The Prototethys ocean is formed between tow giant continents of Gondwana in the north and Eurasia in the south. Iranian terrain as neigburhood countries in the Oman, Pakestan, SE Turkey has been belonged to the giant Gondwana during Precambrian and Paleozoic. Precambrian terrains in Iran show limited out crops including of middle part of the Central Iran in Saghand and Poshtbadam regions, Uromiyeh, Zanjan, Golpayegan, Anabolaghi (in Miyaneh) and Takab. The Takht-e-Soleyman metamorphic complex is located in the north eastern Takab. It is composed of variety of metamorphic rocks including metapelites, metabasites, calc-silicates and meta-ultramafic rocks. On the basis of fieldgeology, petrology and zircon U/Pb isotopic data, the Takht-e-Soleyman complex is comparable with the Central Iranian micro-continent. On the basis of 207Pb/206Pb isotopic data, age of the oldest hetrogen fragments rocks in the Takht-e-Soleyman continental crust gives ca. 2800 Ma, which is comparable with the ages from the Central Iran Micro-continent (ca. 2400 Ma). The regional metamorphism of the basement rocks in the Takht-e-Soleyman complex occurred during compressional regimes related to the Katangan Orogeny corresponding to the Precambrian. Partial melting of the metamorphic rocks has been occurred during Oligocene to Miocene corresponding to the final continental collision of the Neotethys ocean. Migmatites of the Takht-e-Soleyman complex are formed in this regard.


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