The results of investigations on solid specimens of three granites show that, of the three variables, temperature, pressure and time, changes in temperature have the most profound effect on the rates of reactions in the specimens. Variations of both pressure and time also cause differences in the rates of reactions, but, are less important, on the whole than temperature changes. This statement, however, is subject to certain qualifications, depending on the temperature-pressure relationships to the granite liquidus curve. It is also shown that the solid specimens of the three granites begin to melt at almost the same temperature-pressure conditions as finely powdered granites.

Kranck, E. (Supervisor)