Geochemical and Characteristics of Mafic and Ultramafic Rocks of the Suprasubduction Zone Mawat Ophiolite, NE Iraq

New geochemical data were presented for the mafic (basalts and gabbros) ultramafic (dunites, serpentinites pyroxenites) rocks from Mawat ophiolite exposed in Zagros suture zone northeastern Iraq. The mantle section of is composed serpentinized peridotites, harzburgites, dunites, chromitites pyroxenite dykes. crustal layered amphibole-rich gabbros, pegmatitic gabbros as well basalts minor felsic are highly depleted LILEs most HFSEs. tholeiitic, characterized by depletion LREEs display a positive trend LREE to HREE with low Ti/V ratios. younger mostly calc-alkaline, enrichments negative REE high basaltic samples plot below N-MORB reference line suggesting that these elements have been mobile. They fall within boninitic field diagram related subduction initiation setting. rifting which postdated formation ophiolite. These consistent subduction-related suprasubduction tectonic