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Phase equilibria and geochronology of Ossa-Morena eclogites

The mineralogical evolution of OMZ eclogites was modelled by calculated P-T pseudosection analysis for an appropriate bulk composition in the model system CNFMASH. OMZ eclogites having developed a clockwise P-T path that reached 16-18 kbar and 600-650 ºC, underwent isothermal decompression to 12-10 kbar before final cooling (< 550 ºC) to greenschist facies conditions. Sm/Nd and Ar/Ar radiometric data indicate t...