ミグマタイトと花崗岩体をつなぐ [in Japanese] Link Migmatites to Grantic Body [in Japanese]
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Five problems of anatexites and granites have been discussed to study the generation of granitic body. The first is that partial melting takes place in non-equilibrium conditions originated from element-transfer in crystal and from melt-migration in migmatite. Minerals in non-equilibrium relation generally coexist in a migmatite. The second, the partial melting of migmatites is strongly affected by water-mobility in rocks and by increasing rate of temperature. The third, melt-convergence leads to occurrence of vein and to melt-depletion around veins. The fourth, the mechanism of melt-transfer is different between voluminous melt and little melt. Voluminous melt (>50 % melt) can move together with containing crystals. The fifth, there are some limiting relations between crustal thickness to melt and the size and volume of granitic body.
- J. Geogr.
J. Geogr. 106(5), 714-720, 1997-10-25
Tokyo Geographical Society