The osmium-isotope mismatch commonly reported between mid-ocean-ridge basalts(MORBs) and residual mantle might reflect evolution of the MORB Re-Os system after
The peridotite xenoliths are widely distributed in the Cenozoic basalts, Eastern China. However, their petrogenesis is hotly controversial. The peridotite xenol
Geophysical investigations and laboratory experiments show evidence for possible subduction of ancient oceanic crust.Geological and mineralogical observations s