The Mashhad ultramafic complex with a Permo-Triassic stratigraphic age is exposed at the NE of Binaloud Mountain and the SW to NW of Mashhad city. This area is mainly composed of mafic and ultramafic rocks, metamorphosed carbonate and pelitic rocks and granitoids in a NW- SE trend. Serpentinized amphibole-peridotites are the main types of ultramafic rocks in this area. Minerals in these rocks i...

Baft ophiolite mélange is a part of Naein-Baft ophiolite (southeast of Kerman province in Iran). Serpentinites from Baft ophiolite mélange contain different types of spinels such as chromite, chromespinel, ferritchromite and magnetite which can reveal different stages of evolution in host serpentinites. The compositions of Baft chromites show that they belong to podiform chromitites that may ha...

The decay of the primordial isotopes 238U, 235U, 232Th, and 40K has contributed to terrestrial heat budget throughout Earth's history. Hence, individual abundance those are key parameters in reconstructing contemporary Earth models. geoneutrinos produced by radioactive decays uranium thorium have been observed with Kamioka Liquid-Scintillator Antineutrino Detector (KamLAND). Those measurements ...

Variations of oxygen isotope ratios in arc-related lavas can constrain trace-element enrichment in a mantle source being fluxed by addition the contributions of subducted crustal igneous rocks, sediments, and of aqueous fluid. Comparison of this model with observed variations fluids to the sub-arc mantle. We have measured oxygen isotope in the geochemistry of lavas from the Vanuatu–Fiji–New Cal...

In a classic model of evolution the non-cratonic continental mantle lithosphere, harzburgites represent refractory (<5% clinopyroxene) residues high degrees partial melting fertile mantle, while lherzolites (>5% lesser melting. However, is not only process that could explain peridotite compositional variability ranges from (>2 wt% Al2O3, <45 MgO) to (<2 >45 MgO). refertilization process, harzbu...

Intermediate-depth earthquakes (30-300 km) have been extensively documented within subducting oceanic slabs, but their mechanics remains enigmatic. Here we decipher the mechanism of these earthquakes by performing deformation experiments on dehydrating serpentinized peridotites (synthetic antigorite-olivine aggregates, minerals representative of subduction zones lithologies) at upper mantle con...