New structural data have been collected in the high-pressure meta-ophiolites exposed Lanzo Valleys (i.e., Ophiolite, LVO) and tectonically overlying continental crust of Dora-Maira Gran Paradiso massifs Western Alps. Detailed geological mapping analysis carried out south-western sector LVO Upper Viù Valley) allow to distinguish four ductile deformation phases, corresponding subduction-related D...

Ultramafic rocks, i.e., peridotites and pyroxenites, occur in a variety of tectonic settings on Earth. rocks can form as accumulation mafic minerals from basaltic to komatiitic melts be major component the Earth's mantle. The origin history ultramafic are expected provide information processes partial melting melt migration/extraction mantle evolution geologic units containing rocks. I study me...

mineral paragenesis of rodingitized basic rocks of iranian ophiolites are presented and metasomatic reactions between ca+2 bearing aqueous fluids issued during serpentinization of host ultramafic rock – with magmatic minerals of basic rocks leading to present paragenesis of rodingites are discussed. it is concluded that ca+2 rich aqueous fluid in equilibrium with serpentinite has high ca+2 chem...