Conclusions

Granitoid microstructures are consistent with crystallization in liquid, even if the crystallization occurred elsewhere before final positioning of the crystal, as with antecrysts. Structural evidence indicates that: (1) solid restite is generally absent, (2) K-feldspar megacrysts crystallize as normal phenocrysts with sufficient room in which to grow, rotate into foliations, move into new locations and concentrate passively, and (3) granitoids generally do not undergo major changes in grain shapes during slow cooling.