Provenance and equilibrium studies of Eslamlu metapelites, Oshnavieh, NW Iran

This study has focused on provenance of Eslamlu metapelites, NW Iran. Whole rock chemistry analysis has revealed that these metapelites are rich in Iron and Aluminum and as a result the modal abundance of garnet (Almandine) is high. But those samples which are rich in SiO2 are poor in Al2O3, therefore, Eslamlu metapelites have less cordierite and aluminosilicates. The position of different samples in AFM compatibility diagrams is similar, as a result, bulk rock chemistry variable was constant and parageneses are produced due to changes in P and T of metamorphism. Further studies has unraveled that parent sedimentary rocks have been Fe-shale and graywacke. The high concentration of Al2O3 and Fe2O3 shows that the rocks are Laterite.  PIA, CIA and CIW indexes are high showing intense weathering conditions; hence the aluminum content is very high. According to major element composition of metapelites, tectonic environment of igneous parent of sediments, not Ruteh sediments, has been active continental margin.