Complex proterozoic to paleozoic history of the upper mantle recorded in the Urals lherzolite massifs by Re-Os and Sm-Nd systematics

The combination of 187Re-187Os and 147Sm-143Nd systematics for peridotites, mafic-ultramafic cumulates and mafic dykes reveals the complex history of ophiolite complexes, including isolation from the convective upper mantle at Proterozoic time, storage in sub-continental lithospheric mantle and re-activation during later tectonic events, such as island-arc formation.