#Probing the origin of the mantle’s chemically distinct ‘scars’
“#Probing the origin of the mantle’s chemically distinct ‘scars’” Basalt, the most-common rock on Earth’s surface, encases green crystals–a geologic “nesting doll” phenomenon called a xenolith. Basalts such as this one derive from a section of the mantle that has been depleted in incompatible trace elements, which is usually attributed to continental crust formation. In…