0 the surface of the earth that is about 35 kilometres thick and includes the land masses and the solid rock below them
The crustal component could be provided by partial melting at the base of continental crust or by contamination of more mafic magma with crustal material.
Cooling and contamination of mafic and ultramafic magmas during ascent through continental crust.
The partial melting conditions are similar to those assumed when basaltic continental crust partially melts to form active margin batholiths.
This controls the way the continental crust responds to plate collision, earthquakes and aseismic slip in subduction zones, and mantle convection.
The data confirm the interpretation of partial melting of, or considerable contamination by, old continental crust during magma generation and evolution.
One of these sources must be in the mantle and the other(s) in the continental crust.
Unshaded areas enclosed by solid lines are submerged continental crust.
The origin and accretionary history of the continental crust has long been debated by earth scientists.
