Figure F7. A schematic model for petrogenetic conditions at the AAD. Beneath Zone A, partial melting started and melts segregated deeper than was the case for the AAD. The length of the hypothetical melting column indicates the degree of partial melting.

Figure F7. A schematic model for petrogenetic conditions at the AAD. Beneath Zone A, partial melting started and melts segregated deeper than was the case for the AAD. The length of the hypothetical melting column indicates the degree of partial melting.