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The eastern Orhaneli ophiolite in NW Anatolia (Turkey) consists of voluminous dunite and minor harzburgite intruded by clinopyroxenite veins. Harzburgite contains spinel of low Cr# [100×Cr/(Cr+Al)=40–45] and diopside of low Al2O3 and TiO2 contents, whereas dunite contains spinel of higher Cr# (62–82) and diopside (blebs) (even more) depleted in Al2O3 and TiO2 (than harzburgite). The concentrations...
The Eldivan ophiolite along the Izmir–Ankara–Erzincan suture zone in north-central Anatolia represents a remnant of the Neotethyan oceanic lithosphere. Its upper mantle peridotites include three lithologically and compositionally distinct units: clinopyroxene (cpx)–harzburgite and lherzolite (Group-1), depleted harzburgite (Group-2), and dunite (Group-3). Relics of primary olivine and pyroxene occur...
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