fig24.htm

Figure 24. Model for the structure of magmatic systems beneath cratons and intercratonic mobile belts of the Baltic Shield (after [{\it Sharkov,} 2003]). 1 - Ancient lithospheric mantle; 2 - Archean basite lower crust; 3 - Archean sialic crust; 4 - region where the magma chambers ascends according to the floating-zone mechanism; 5 - layered intrusions; 6 - sedimentary-volcanic rocks and lava plateaus; 7 - zone of tectonic flowage of the Belomorian belt with drusite bodies (black).


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