fig03.htm

Figure 3. Structure of Cenozoic continental intraplate magma systems. (1) volcanic plateau; (2) layered intrusions: (a) in the crust, (b) sills in volcanic rocks; (3) major magma chambers in the mantle and in the base of the crust; (4) melting zone in the top of a mantle plume; (5) refractory restite; (6) cooled margin of the plume; (7) fresh plume material.


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